WO2024089427A1

WO2024089427A1 - Computing device

Info

Publication number: WO2024089427A1
Application number: PCT/GB2023/052800
Authority: WO
Inventors: Zhihuang Xiao
Original assignee: Nicoventures Trading Limited
Priority date: 2022-10-26
Filing date: 2023-10-26
Publication date: 2024-05-02
Also published as: GB202215844D0

Abstract

An application specific integrated circuit (ASIC) package for use in an electrical or electronic device is disclosed, the ASIC package comprising a plurality of functional units and a plurality of terminals. Each functional unit is configured with control logic operable to provide a discrete monitoring and/or control function associated with an aspect of operation of the electrical or electronic device. Each terminal comprises a plurality of input and/or output terminals, each input and/or output terminal being connected to at least one of the functional units. An operating status of each of the functional units is independently configurable into one of an enabled and non-enabled operational state, and the ASIC package is configured to be set into a target functional configuration selected from a plurality of different functional configurations. Each of the plurality of functional configurations comprises a different combination of operating states associated with respective ones of the plurality of functional units. In this way, the ASIC package provides a degree of customisability of supported functions, enabling the same 'master' ASIC package (e.g. the as-fabricated ASIC package) to be modified after manufacture to tailor the supported function set to a specific one of a plurality of devices.

Description

COMPUTING DEVICE Field

The present disclosure relates to computing devices, and in particular, computing devices comprising application specific integrated circuits (ASICs).

Background

It is typical for electrical / electronic devices, for example consumer handheld electronic devices, to comprise a controller unit to support functionality I operability of the device. Such a controller provides control logic, implemented by hardware optionally in conjunction with firmware I software, to provide processing functionality. A controller unit will typically be formatted into a package comprising power terminals (e.g. V_SUppiy and V_ground) connected to a power source (e.g. a battery) and a plurality of input and / or output terminals connected to electrical I electronic components of the device, and the processing comprises the receiving of input signals from components of the device, and the provision of output signals to components of the device. Such signals may be analogue and / or digital, depending on the device whose functionality is supported by the controller unit.

A controller for an electrical device, such as a handheld consumer electrical device, may in some instances comprise a microcontroller unit (MCU), which comprises a plurality of input and output terminals to enable the MCU to receive input signals and provide input signals to support functionality of the device. Such an MCU will typically be programmable to provide customised functionality, such that the control logic provided by the MCU can be adapted to support functionality of a specific device, having a particular set of control functions which are required to be supported (e.g. corresponding to the capabilities of the device / system electrical hardware / components). Where a set of required functions to be provided by a controller element is closed and thus well-defined, a controller unit may be provided as an application specific integrated circuit (ASIC). Unlike an MCU, in which the control logic is provided by machine code / software / firmware stored in system memory, which can be tailored to the specific functionality to be supported by the device in which the MCU is to be implemented, the control logic of an ASIC chip is typically entirely defined by the physical gate architecture of the circuitry comprised in the chip, with the latter being designed specifically to support a single, well-defined use case (which may comprise a plurality of functions). In general, ASICs may be considered to offer certain advantages over MCUs in certain use cases, including greater potential for optimisation I efficiency, and reduced unit cost, provided manufacturing volumes are high enough to offset the typically substantial design and tooling costs. As a result, ASICs typically tend to be highly optimised for their specific application(s), but lack flexibility to adapt their operation post-manufacture; whilst MCUs are less well optimised for any specific application, but offer significant flexibility to apply the same physical controller (with application-specific software I machine code) to different use cases. Thus use of either an ASIC or MCU as a controller of an aerosol provision system typically involves a trade-off between unit cost, functional flexibility, and efficiency / optimisation, and the corresponding manufacturing challenges.

The inventor has recognised that it may be advantageous to provide a controller unit for electrical devices (e.g. handheld consumer electrical devices) which combines some of the benefits which are typically respectively associated with either ASICs or MCUs in the same controller. Various approaches are described herein which seek to help address or mitigate at least some of the issues discussed above.

Summary

According to a first aspect of the present disclosure, there is provided an application specific integrated circuit, ASIC, package, for use in an electrical or electronic device, the ASIC package comprising: a plurality of functional units, wherein each of the plurality of functional units is configured with control logic operable to provide a discrete monitoring and / or control function associated with an aspect of operation of the electrical or electronic device, and wherein an operating status of each of the functional units is independently configurable into one of an enabled and non-enabled operational state; and a plurality of terminals, comprising a plurality of input and / or output terminals, wherein each one of the plurality of input and / or output terminals is connected to at least one of the plurality of functional units; wherein the ASIC package is configured to be set into a target functional configuration selected from a plurality of different functional configurations, wherein each of the plurality of functional configurations comprises a different combination of operating states associated with respective ones of the plurality of functional units.

According to a second aspect of the present disclosure, there is provided a method of modifying an application specific integrated circuit, ASIC, package, for use in an electrical or electronic device, the ASIC package comprising: a plurality of functional units, wherein each of the plurality of functional units is configured with control logic operable to provide a discrete monitoring and I or control function associated with an aspect of operation of the electrical or electronic device, and wherein an operating status of each of the functional units is independently configurable into one of an enabled and non-enabled operational state; and a plurality of terminals, comprising a plurality of input and I or output terminals, wherein each one of the plurality of input and / or output terminals is connected to at least one of the plurality of functional units; wherein the method comprises setting the ASIC package into a target functional configuration selected from a plurality of different functional configurations, wherein each of the plurality of functional configurations comprises a different combination of operating states associated with respective ones of the plurality of functional units.

According to a third aspect of the present disclosure, there is provided a data processing apparatus comprising means for carrying out the method according to the second aspect.

According to a fourth aspect of the present disclosure, there is provided a computer program product comprising instructions which, when the program is executed by a computer, cause the computer to carry out the method of the second aspect.

According to a fifth aspect of the present disclosure, there is provided a computer-readable medium having stored thereon the computer program product according to the fourth aspect.

It will be appreciated that features and aspects of the invention described above in relation to the first and other aspects of the invention are equally applicable to, and may be combined with, embodiments of the invention according to other aspects of the invention as appropriate, and not just in the specific combinations described above.

Brief Description of the Drawings

Embodiments of the disclosure will now be described, by way of example only, with reference to the accompanying drawings, in which:

Figure 1 is a schematic diagram of an aerosol provision system in which an ASIC package according to embodiments of the present disclosure may be implemented.

Figure 2 is a schematic diagram of an ASIC package according to embodiments of the present disclosure.

Figure 3 is a flowchart detailing aspects of operation of a power supply unit according to embodiments of the present disclosure.

Detailed Description

Aspects and features of certain examples and embodiments are discussed I described herein. Some aspects and features of certain examples and embodiments may be implemented conventionally and these are not discussed / described in detail in the interests of brevity. It will thus be appreciated that aspects and features of apparatus and methods discussed herein which are not described in detail may be implemented in accordance with any conventional techniques for implementing such aspects and features.

The present disclosure relates to application-specific integrated circuits (ASICs) and ASIC packages for electrical I electronic devices. Herein, aerosol provision systems / devices are presented as an exemplary use case in which embodiments of the present disclosure may be for the sake of providing a concrete example of a potential application for ASICs and operating schemes according to the present disclosure. However it will be understood that this operating context is merely exemplary, and the subject matter of the present disclosure may be applied in respect of other use cases for electrical / electronic devices in which the advantages of ASICs according to the present disclosure are desirable. Thus whilst embodiments of an ASIC / ASIC package as described herein may in some instances be referred to as an ASIC I ASIC package configured for use in an electronic aerosol provision system, device, or consumable, ASICs / ASIC packages designed according to the same principles described herein may be applied in the context of any other kind of electronic I electrical I electro-mechanical devices or systems, and a controller unit comprising an ASIC package described herein may be referred to as a controller unit configured for use in an electrical I electronic system or device, or configured for use in a consumer electrical device I handheld consumer electronic device.

Aerosol provision systems are an example of a type of handheld consumer electrical device in which an ASIC package according to the present disclosure may be implemented, and which an ASIC package according to the present disclosure may be designed to support. Aerosol provision systems, which may comprise so-called ‘e-cigarettes’ or ‘electronic cigarettes’, or may comprise so-called ‘heat-not-burn’ or ‘tobacco heating’ devices, often, though not always, comprise a modular assembly including both a reusable part, which may be referred to herein as an aerosol provision device or control unit, and a replaceable (disposable) part which may be referred to herein as a consumable, article, cartridge, cartomiser, or pod unit. Often the replaceable part will comprise a supply aerosol generating material and an aerosol generator, and the reusable part will comprise a power supply (e.g. rechargeable power source) and a controller unit configured to provide control logic to support functions of the aerosol provision system. It will be appreciated these different parts may comprise further elements depending on the required functionality, as described further herein. Replaceable parts may be electrically and mechanically coupled to a reusable part for use, for example using a screw thread, bayonet, or magnetic coupling with appropriately arranged electrical contacts (in instances where an aerosol generator and I or other electrical components are comprised in the replaceable part). When the aerosol generating material in a replaceable part is exhausted, or the user wishes to switch to a different replaceable part having a different aerosol generating material, a replaceable part may be removed from the reusable part and a different / new replaceable part attached in its place. Devices conforming to this type of two-part modular configuration may generally be referred to as two-part devices. Alternatively, the components described above as distributed between a separable reusable part and a replaceable part may be integrated into a single housing, such that a part of the device containing aerosol generating material (e.g. a reservoir) is not designed to be replaced by a user. Such a device, which may be referred to as a single-part or uni-part aerosol provision system, may be configured to allow a user to refill a reservoir or container of aerosol generating material, or may not be designed to allow refill by a user. Such a device may be referred to as a ‘disposable’ aerosol provision system, and may be manufactured to comprise a battery and a supply of aerosol generating material which are sized to allow a certain number of puffs before the device is no longer able to generate aerosol for a user (e.g. because the supply of electrical power and / or aerosol generating material are exhausted). When this point is reached, the device may be configured to be disposed of or recycled. Disposable aerosol provision systems, which are designed for the entire aerosol provision system to be disposed of after a target number or range of puffs, may typically be designed to be relatively simple, with low per-unit production costs compared to reusable aerosol provision systems, and thus the inventor has recognised that the use of an ASIC package to provide control logic may be particularly advantageous in this context due to the typically higher degree of optimisation and lower unit cost, compared to typical MCU controller units, provided production volumes are sufficiently high to offset design and tooling costs.

Figure 1 is a cross-sectional view through an example aerosol provision system 1 in accordance with certain embodiments of the disclosure. The aerosol provision system 1 shown in Figure 1 comprises two main components, namely an aerosol provision device or reusable part 2 and a replaceable I disposable cartridge or consumable part 4 (the terms ‘cartridge’, ‘consumable’, and ‘replaceable part’ may herein be used interchangeably). In normal use the reusable part 2 and the cartridge part 4 are releasably coupled together at an interface 6. When the cartridge part is exhausted or the user simply wishes to switch to a different cartridge part, the cartridge part may be removed from the reusable part and a replacement cartridge part attached to the reusable part in its place. The interface 6 provides a structural, electrical and airflow path connection between the two parts and may be established in accordance with conventional techniques, for example based around a screw thread, magnetic or bayonet fixing with appropriately arranged electrical contacts and openings for establishing the electrical connection and airflow path between the two parts as appropriate. The specific manner by which the replaceable part 4 mechanically mounts to the reusable part 2 is not significant to the principles described herein. As known to the skilled person, in some examples, an aerosol generator may be provided in the reusable part 2 rather than in the replaceable part 4, or the transfer of electrical power from the reusable part 2 to the replaceable part 4 may be wireless (e.g. based on electromagnetic induction), so that an electrical connection between the reusable part and the replaceable part is not needed.

The cartridge I consumable I replaceable part 4 may in accordance with certain embodiments of the disclosure be broadly conventional. In Figure 1, the cartridge part 4 comprises a cartridge housing 42 formed of a plastics material. The cartridge housing 42 supports other components of the cartridge part and provides the mechanical interface 6 with the reusable part 2. The cartridge housing is generally circularly symmetric about a longitudinal axis along which the cartridge part couples to the reusable part 2. Within the cartridge housing 42 is a reservoir 44 that contains aerosol generating material. Aerosol generating material is a material that is capable of generating aerosol, for example when heated, irradiated or energized in any other way. Aerosol generating material may, for example, be in the form of a solid, liquid or gel which may or may not contain an active substance and/or flavourants. In some embodiments, the aerosol-generating material may comprise plant material such as tobacco. In some embodiments, the aerosol-generating material may comprise an “amorphous solid’’, which may alternatively be referred to as a “monolithic solid” (i.e. non- fibrous). In some embodiments, the amorphous solid may be a dried gel. The amorphous solid is a solid material that may retain some fluid, such as liquid, within it. In some embodiments, the aerosol generating material may for example comprise from about 50wt%, 60wt% or 70wt% of amorphous solid, to about 90wt%, 95wt% or 100wt% of amorphous solid. The aerosol generating material may comprise one or more active substances and/or flavours, one or more aerosol-former materials, and optionally one or more other functional material. An aerosol-former material may comprise one or more constituents capable of forming an aerosol, as known to the skilled person.

One or more active constituents / substances comprised in the consumable part may comprise one or more physiologically and/or olfactory active constituents which are included in the aerosolisable material in order to achieve a physiological and/or olfactory response in the user. In some embodiments, the active constituent is a physiologically active constituent and may be selected from nicotine, nicotine salts (e g. nicotine ditartrate/nicotine bitartrate), nicotine- free tobacco substitutes, other alkaloids such as caffeine, cannabinoids, or mixtures thereof.

In the example shown schematically in Figure 1, a reservoir 44 is provided configured to store a supply of liquid aerosol generating material. In this example, the liquid reservoir 44 has an annular shape with an outer wall defined by the cartridge housing 42 and an inner wall that defines an airflow path 52 through the cartridge part 4. The reservoir 44 is closed at each end with end walls to contain the aerosol generating material. The reservoir 44 may be formed in accordance with conventional techniques, for example it may comprise a plastics material and be integrally moulded with the cartridge housing 42. This configuration is exemplary, and any airflow configuration known to the skilled person may alternatively be used.

The cartridge (which may also be referred to herein as a consumable part) further comprises an aerosol generator 48 located towards an end of the reservoir 44 opposite to the mouthpiece outlet 50. An aerosol generator is an apparatus configured to cause aerosol to be generated from the aerosol-generating material. In some embodiments, the aerosol generator is a heater configured to subject the aerosol-generating material to heat energy, so as to release one or more volatile materials from the aerosol-generating material to form an aerosol. In some embodiments, the aerosol generator is configured to cause an aerosol to be generated from the aerosol-generating material without heating. For example, the aerosol generator may be configured to subject the aerosol-generating material to one or more of vibration, increased pressure, or electrostatic energy.

It will be appreciated that in a two-part device such as shown in Figure 1 , the aerosol generator may be in either of the reusable part 2 or the cartridge part 4. For example, in some embodiments, the aerosol generator 48 (e.g. a heater) may be comprised in the reusable part 2, and is brought into proximity with a portion of aerosol generating material in the cartridge 4 when the cartridge is engaged with the reusable part 2. In such embodiments, the cartridge may comprise a portion of aerosol generating material, and an aerosol generator 48 comprising a heater is at least partially inserted into or at least partially surrounds the portion of aerosol generating material as the cartridge 4 is engaged with the reusable part 2. In the example of Figure 1 , a wick 46 in contact with a heater 48 extends transversely across the cartridge airflow path 52 with its ends extending into the reservoir 44 of a liquid aerosol generating material through openings in the inner wall of the reservoir 44. The openings in the inner wall of the reservoir are sized to broadly match the dimensions of the wick 46 to provide a reasonable seal against leakage from the liquid reservoir into the cartridge airflow path without unduly compressing the wick, which may be detrimental to its fluid transfer performance.

In the example of Figure 1, the wick 46 and heater 48 are arranged in the cartridge airflow path 52 such that a region of the cartridge airflow path 52 around the wick 46 and heater 48 in effect defines a vaporisation region for the cartridge part 4. Aerosol generating material in the reservoir 44 infiltrates the wick 46 through the ends of the wick extending into the reservoir 44 and is drawn along the wick by surface tension / capillary action (i.e. wicking). The heater 48 in this example comprises an electrically resistive wire coiled around the wick 46. In the example of Figure 1 , the heater 48 comprises a nickel chrome alloy (Cr20Ni80) wire and the wick 46 comprises a cotton bundle, but it will be appreciated the specific aerosol generator configuration is not significant to the principles described herein. In use electrical power may be supplied from the power source / battery 26 to the heater 48 by a controller 60, to vaporise an amount of aerosol generating material (aerosol generating material) drawn to the vicinity of the heater 48 by the wick 46. Vaporised aerosol generating material may then become entrained in air drawn along the cartridge airflow path from the vaporisation region towards the mouthpiece outlet 50 for user inhalation. Although the aerosol generator 48 illustrated in Figure 1 comprises a resistive wire coiled around a wick 46, this is not essential and it will be appreciate that other forms of aerosol generator may be used, such as a ceramic heater, flat plate heater, an inductive drive unit (e.g. a drive coil) providing a magnetic field to cause heating of a susceptor element in contact with aerosol generating material, etc.

The outer housings 12 / 42 of may be formed, for example, from a plastics or metallic material and in this example the housing 12 of the reusable part has a cross section generally conforming to the shape and size of the cartridge part 4 so as to provide a smooth transition between the two parts at the interface 6. In the example of Figure 1 , the air inlet 28 connects to an airflow path 51 through the reusable part 2. The reusable part airflow path 51 in turn connects to the cartridge airflow path 52 across the interface 6 when the reusable part 2 and cartridge part 4 are connected together. Thus, when a user inhales on the mouthpiece opening 50, air is drawn in through the air inlet 28, along the reusable part airflow path 51, across the interface 6, through the aerosol generation region in the vicinity of the aerosol generator 48 (where vaporised aerosol generating material becomes entrained in the air flow), along the cartridge airflow path 52, and out through the mouthpiece opening 50 for user inhalation.

The power source 26 in this example is a rechargeable battery and may be of a conventional type, for example of the kind normally used in electronic cigarettes and other applications requiring provision of relatively high currents over relatively short periods. The power source 26 may be recharged through a charging connector in the reusable part housing 12, for example a USB connector. In other instances, for example in disposable aerosol provision system, the power source 26 may not be configured to be rechargeable by a user, and a charging connector may not be provided. The power source 26 may be supplied fully charged, and is configured to be disposed of with all or part of the aerosol provision system 1 when it has been fully discharged (i.e. when it no longer provides sufficient power to enable generation of aerosol). One or more user input mechanisms (e.g. buttons 14, 16) may be provided, which in this example are conventional mechanical buttons, for example comprising a spring mounted component which may be pressed by a user to establish an electrical contact. In this regard, the input buttons may be considered input devices for detecting user input and the specific manner in which the buttons are implemented is not significant. The buttons may be assigned to functions such as switching the aerosol provision system 1 on and off, and adjusting user settings such as a power to be supplied from the power source 26 to an aerosol generator 48. However, the inclusion of user input buttons is optional, and in some embodiments buttons may not be included.

A visual feedback mechanism I display unit 24 may be provided to give a user with a visual indication of various characteristics associated with the aerosol provision system, for example current power setting information, remaining power source power, and so forth. The display may be implemented in various ways. In this example the display 24 may comprise a conventional pixilated LCD screen that may be driven by the controller 60 to display the desired information in accordance with conventional techniques. In other implementations the display may comprise one or more discrete indicators, for example LEDs (not shown), that are arranged to display the desired information, for example through particular colours and / or illumination patterns. In some examples, the display unit 24 may comprise a touchscreen display providing functionality which may alternatively or additionally be provided by one or more buttons as described further herein. More generally, the manner in which a display is provided and information is displayed to a user using such a display is not significant to the principles described herein. For example some embodiments may not include a visual display and may optionally include other means for providing a user with information relating to operating characteristics of the aerosol provision system, for example using audio or haptic feedback, or may not include any means for providing a user with information relating to operating characteristics of the aerosol provision system.

A controller unit 60 is suitably configured I programmed to control the operation of the aerosol provision system to support one or more functions, which may typically be defined in accordance with established functionality for such devices. The controller unit I processor circuitry 60 may be considered to logically comprise various sub-units I circuitry elements associated with different aspects of the operation of the aerosol provision system 1. Each of the sub-units described herein may be implemented in hardware (e g. as a functional unit of In this example the controller 60 may comprise power supply control circuitry for controlling the supply of power from the power source 26 to the aerosol generator 48 in response to user input, user programming circuitry 20 for establishing configuration settings (e.g. user-defined power settings) in response to user input, as well as other functional units / circuitry associated functionality in accordance with the principles described herein and conventional operating aspects of electronic cigarettes, such as display driving circuitry and user input detection circuitry. Embodiments of ASIC packages described herein may be configured to operate as a controller unit 60 for an aerosol provision system as shown schematically in Figure 1 .

Reusable part 2 comprises an activation element which directly or indirectly allows a user to provide input to the controller 60 to indicate a demand for aerosol. The activation element may comprise an airflow sensor 30 which is electrically connected to the control unit 60. In most embodiments, the airflow sensor 30 comprises a so-called “puff sensor”, as known to the skilled person, in that the airflow sensor 30 is used to detect when a user is puffing on the device by detecting airflow in accordance with known approaches (e.g. a change in pressure, airflow speed, or acoustic signals associated with a puff). In the example shown in Figure 1 , the airflow sensor 30 is mounted to a printed circuit board 31 as described further herein, but this is not essential. The airflow sensor 30 may comprise any sensor which is configured to determine a characteristic of airflow in an airflow path 51 disposed between air inlet 28 and mouthpiece opening 50, for example a pressure sensor or transducer (for example a membrane or solid-state pressure sensor), a combined temperature and pressure sensor, or a microphone (for example an electret-type microphone), which is sensitive to changes in air pressure, including acoustical signals. The airflow sensor may typically be situated within a sensor cavity / chamber 32, which, where present, comprises the interior space defined by one or more chamber walls 34 in which an airflow sensor 30 can be fully or partially situated. In some embodiments, the airflow sensor 30 is mounted to a printed circuit board (PCB) 31 , which comprises one of the chamber walls 34 of a sensor housing comprising the sensor chamber / cavity 32. A deformable membrane is disposed across an opening communicating between the sensor cavity 32 containing the sensor 30, and a portion of the airflow path disposed between air inlet 28 and mouthpiece opening 50. The deformable membrane covers the opening, and is attached to one or more of the chamber walls according to approaches described further herein. It will be appreciated an airflow sensor 30, where present, may not be positioned in a dedicated sensor cavity 32, and may be situated anywhere in the airflow path, according to any suitable approach known to the skilled person.

Whilst the aerosol provision system of Figure 1 has been shown as comprising a replaceable part 4 and a reusable part 2, it will be appreciated this is only exemplary, and in other instances, such an aerosol provision system may comprise a single-part device, which may be designed to be disposable after an initial supply of electrical power and / or aerosol generating material, supplied at manufacture, have been exhausted. Thus an aerosol provision system 1 as shown in Figure 1 or otherwise described herein may not comprise a connection interface 6, but rather the components comprised in the device (e g. as shown in the example device of Figure 1) may be housed within a single housing.

An aerosol provision system may 1 comprise communication circuitry configured to enable a connection to be established with one or more further electronic devices (for example, a smartphone, personal computer, external server, storage / charging case, and / or a refill I charging dock) to enable data transfer between the aerosol provision system 1 and further electronic device(s). In some embodiments, the communication circuitry is integrated into controller unit 60, and in other embodiments it is implemented separately (comprising, for example, separate application-specific integrated circuit(s) / circuitry I chip(s) / chipset(s)). For example, the communication circuitry may comprise a separate module to the controller 60 which, while connected to controller 60, provides dedicated data transfer functionality for the aerosol provision system. In some embodiments, the communication circuitry is configured to support communication between the aerosol provision system 1 and one or more further electronic devices over a wireless interface. The communication circuitry may be configured to support wireless communications between the aerosol provision system 1 and other electronic devices such as a case, a dock, a computing device such as a smartphone or PC, a base station supporting cellular communications, a relay node providing an onward connection to a base station, a wearable device, or any other portable or fixed device which supports wireless communications.

Wireless communications between the aerosol provision system 1 and a further electronic device may be configured according to known data transfer protocols such as Bluetooth, ZigBee, WiFi, Wifi Direct, GSM, 2G, 3G, 4G, 5G, LTE, NFC, RFID. More generally, it will be appreciated that any wireless network protocol can in principle be used to support wireless communication between the aerosol provision system 1 and further electronic devices. In some embodiments, the communication circuitry is configured to support communication between the aerosol provision system 1 and one or more further electronic devices over a wired interface. This may be instead of or in addition to the configuration for wireless communications set out above. The communication circuitry may comprise any suitable interface for wired data connection, such as USB-C, micro-USB or Thunderbolt interfaces. More generally, it will be appreciated the communication circuitry may comprise any wired communication interface which enables the transfer of data, according to, for example, a packet data transfer protocol, and may comprise pin or contact pad arrangements configured to engage cooperating pins or contact pads on a dock, case, cable, or other external device which can be connected to the aerosol provision system 1.

As set out further herein, the description of an aerosol provision system 1 in accordance with Figure 1 is only provided as an exemplary use context for an ASIC package according to embodiments of the present disclosure, in order to provide a concrete example of a context for which such an ASIC package may be designed and fabricated. It will be appreciated herein that nothing herein is intended to limit the utility of an ASIC package according to embodiments of the present disclosure to the specific context of aerosol provision systems, and that the principles described herein for design and fabrication of an ASIC package configured to be set into one of a plurality of target functional configurations to support functionality of a specific device may be applied in respect of a device and I or set of devices from any field of electrical devices in which a controller unit, and particularly a controller unit comprising a conventional ASIC package, may be used to provide control logic. Thus, as a non-exhaustive list, an ASIC package according to embodiments of the present disclosure may be used as a controller unit in a handheld consumer electronic device (e.g. a digital camera, digital video camera, GPS unit, telephone, watch, digital music player), a household appliance (e.g. a washing machine, dryer, fridge, freezer, dishwasher, smart speaker, microwave, toaster, coffee maker, or blender), in a vehicle (e.g. in a car, aircraft, spacecraft, satellite, drone / UAV, or train), or a computer peripheral and / or module in a computer system (e.g. a sound or graphics card, wireless telecommunications controller, or network switch).

An electrical I electronic device, such as those listed above, may be at least partly characterised by comprising a set of functions which are provided by different electrical or electronic components of the device, with the control of said components being carried out by control logic implemented in one or more controller units. As described further herein, each function of the electronic device may typically be defined in terms of one or more components which implement said function, and a set of input and / or output signals passed between terminals of the controller element(s) via appropriate wired or wireless connections, which enable the one or more components to carry out their intended operations. For example, in the example context of an aerosol provision system, the following is a non-exhaustive list of potential functions:

• An aerosol generation function may typically be implemented by an aerosol generator (e.g. a heater) connected to the controller by suitable electrical connections. The control logic of the controller may be configured to provide a suitable level of electrical power to the aerosol generator. This may be a fixed power level, or the power level may be varied (e.g. via DC-to-DC conversion to modulate the voltage of a drive signal transmitted to the aerosol generator, or use of a pulse-width modulation scheme to modulate the power via varying of the duty cycle of the drive signal). The drive signal may be output from the control element via an output pin, and the aerosol generator may be grounded directly to a ground pin of the control element, or to a common ground rail to which the control element is also connected. The control logic of the controller will typically be configured to trigger provision of the drive signal in response to an activation signal received at an input pin, for example from an actuation element as described further herein. The control logic may compare an input signal level from a sensor (e.g. an airflow sensor), and trigger provision of the aerosol generator drive signal in dependence on the input signal level (e.g. if it exceeds a predefined threshold), and I or the power of the drive signal may be modulated in dependence on the amplitude of the input signal (which, where the sensor is an airflow sensor, will typically be proportional to airflow speed I flow rate).

• A visual feedback function may typically be implemented by a display unit, such as a 2D pixilated display, or one or more LEDs, connected to the controller by suitable electrical connections. The display unit may comprise a touchscreen unit to allow a user to provide control inputs to the device. The control logic of the controller may be configured to provide a suitable digital or analogue drive signal to the display unit, via one or more output pins. The control logic may determine to provide different visual feedback drive signals to the display unit according to approaches known to the skilled person, to indicate, for example, that the device battery has been discharged to a predefined threshold level, that an aerosol generator has been activated, that a certain number of puffs has been taken, that a certain level of power has been set for the drive signals to the aerosol generator, that a certain number of puffs has been taken since a certain point in time, or that an error has occurred in one or more aspects of operation of the device. Where the display unit is a touchscreen unit, the control logic may be configured to receive signals from the touchscreen which are indicative of user inputs, and process these to trigger control functions associated with operation of the device.

• A haptic feedback function may typically be implemented by a haptic motor connected to the controller by suitable electrical connections. The control logic of the controller may be configured to provide a suitable drive signal (e.g. a specific waveform) to the haptic motor to provide haptic feedback, in response to a predefined condition being met. For example, a haptic feedback drive signal may be provided to indicate one or more of the events recited in association with the provision of visual feedback above. Different waveforms may be used to drive the haptic motor for different events I statuses to be indicated. • An audible feedback function may typically be implemented by an audible feedback element (e.g. a speaker) connected to the controller by suitable electrical connections. The control logic of the controller may be configured to provide a suitable drive signal (e.g. a specific waveform) to the audible feedback element to provide audible feedback, in response to a predefined condition being met. For example, an audible feedback drive signal may be provided to indicate one or more of the events recited in association with the provision of visual or haptic feedback above. Different waveforms may be used to drive the audible feedback element for different events I statuses to be indicated.

• A battery charging function may typically be implemented by charging hardware (e.g. a suitable wired or inductive charging interface) and battery connected to the controller by suitable electrical connections. The control logic of the controller may be configured to regulate the charging power according to approaches known to the skilled person, including the prevention of further charging once the battery reaches a certain level of charge. The battery charging function may also provide safety functions to prevent spikes of charging power at the battery, and the controller may receive input signals from one or more sensors located to provide environmental information to enable charging to be controlled on the basis of, for example, battery temperature and / or ambient temperature, in order to reduce the rate of charging and / or stop charging if the battery temperature and I or ambient temperature are above and / or below predefined safety thresholds, as defined by the battery manufacturer.

• A wireless communication function may typically be implemented a wireless communications module, typically configured to operate in accordance with a wireless communications standard (e.g. Bluetooth, ZigBee, WiFi, Wifi Direct, GSM, 2G, 3G, 4G, 5G, LTE, NFC, or RFID). The wireless communications module may be connected to the control element via one or more input and output terminals, with data being transmitted to and / or from the control element to the wireless module via suitable electrical connections; or the wireless communications module may be integrated into the control element, with internal interconnects to allow transmission of signals between the integrated wireless communications module and other functional modules of the control element.

• A wired communication function may typically be implemented a wired communications module, typically configured to operate in accordance with a wired communications standard (e.g. USB-C, micro-USB or Thunderbolt). The wired communications module may be connected to the control element via one or more input and output terminals, with data being transmitted to and / or from the control element to the wired communications module via suitable electrical connections; or the wired communications module may be integrated into the control element, with internal interconnects to allow transmission of signals between the integrated wired communications module and other functional modules of the control element.

It will be appreciated that in any given electronic or electrical device supported by a controller unit, the device may comprise any functions known to the skilled person which are typically controlled at least in part by control logic implemented in a control element such as a suitable programmed MCU, or an ASIC. The set of functions will typically be defined by the particular field in which the device comprising the controller unit is to be used. Embodiments of a controller unit comprising a customisable ASIC as described herein may be applied in contexts other than that of aerosol provision systems, with suitable adaptation of the functional units I modules used to support the function set (e.g. through design of different functional modules; and different packaging of the ASIC in terms of casing and format, input voltage and current rating, power density, and number of input and output terminals), according to approaches known to the skilled person.

Typically, in an electronic / electrical device such as an aerosol provision system, support of functions such as those described above is provided via a controller unit comprising either a microcontroller unit (MCU) or application-specific integrated circuit (ASIC). Where an MCU is used, a unit is typically selected with suitable input voltage and current rating, casing, and terminal number and format, to support the power requirements of the components supporting the different functions, and the number of discrete inputs and outputs required. Control logic is typically provided by firmware I software, which is typically written in a higher-level general- purpose programming language, then compiled to machine code, stored in memory associated with the MCU, and operable to run on the MCU. Where an ASIC is used as a controller unit, in which the control logic is partly or entirely provided by a non-modifiable layout of hardware logic gates, the design of the ASIC is typically partly or entirely customised, based on the set of functions it is required to support. Accordingly, the capability of a typical ASIC is determined by design, and cannot be modified to support other use cases with different function sets (e.g. different devices having different functionality), even if these function sets overlap with the function set for which the ASIC was designed.

The inventor has recognised that it may be advantageous to provide an ASIC package which provides a degree of customisability of supported functions, to enable the same ‘master’ ASIC package (e.g. the as-fabricated ASIC package) to be modified after manufacture to tailor the supported function set to a specific one of a plurality of devices which the ASIC package may be modified to support. Thus, according to embodiments of the present disclosure, there is provided an application specific integrated circuit, ASIC, package, for use in an electronic aerosol provision system, the ASIC package comprising: a plurality of functional units (these may be interchangeably referred to herein as ‘functional blocks’ or ‘functional modules’), wherein each of the plurality of functional units is configured with control logic operable to provide a discrete monitoring and / or control function associated with an aspect of operation of the electronic aerosol provision system, and wherein an operating status of each of the functional units is independently configurable into one of an enabled and non-enabled operational state (otherwise referred to herein as an operating state); and a plurality of terminals, comprising a plurality of power supply terminals and a plurality of input and / or output terminals, wherein each one of the plurality of input and / or output terminals is connected to at least one of the plurality of functional units; wherein the ASIC package is configured to be set into a target functional configuration selected from a plurality of different functional configurations, wherein each of the plurality of functional configurations comprises a different combination of operating statuses associated with respective ones of the plurality of functional blocks. Herein, the terminology of functional blocks may be used interchangeably with the terminology of functional units and functional modules.

Figure 2 shows an ASIC package 200 according to embodiments of the present disclosure. The ASIC package comprises hardware control logic 210, configured to support a plurality of functions associated with an electronic device (e.g. an aerosol provision system) in which the ASIC package 200 is implemented. The hardware control logic 210 is typically implemented on one or more semiconductor (e.g. silicon) dies I chips I wafers comprised in the ASIC package 200. The casing of the ASIC package 200 may be conventional, as may the structure of terminals (e.g. they may be pins or pads, designed for through-hole mounting, surface mounting, chip carrier mounting, pin grid array mounting, flat-package mounting, small-pin- count mounting, or any other mounting type known to the skilled person). In the example shown schematically in Figure 2, four functional units I modules I blocks, 211 , 212, 213, and 214, are shown comprised in the hardware control logic 210. The use of the terms ‘functional unit’ and I or ‘functional module’ are intended herein to indicate capabilities of the ASIC, and do not imply that the circuit elements (e.g. gates I cells) used to implement each functional unit / module of the ASIC are necessarily disposed on spatially distinct regions of the die I wafer / chip. Thus, whilst Figure 2 shows functional units 211 , 212, 213, and 214, as distinct regions / areas of the ASIC package, in some embodiments, circuitry associated with each of the functional units may be integrated with that of other functional units, such that a given region of the die may comprise circuit elements associated with more than one functional unit. With reference to the overview of an exemplary ASIC package design and fabrication approach set out below, the degree to which circuit elements (e.g. gates and interconnects) associated with different functional units are spatially associated / integrated may be determined during placement and routing stages, in which the layout of standard / custom cells and their electrical interconnects on the die material is defined. Whilst these stages may result in circuit elements of respective functional units being laid out on spatially distinct areas of the die (as shown schematically in Figure 2), this may not be the case, particularly if the design process is carried out seeking to maximise the power density of the ASIC (within tolerable safety limits).

Typically, the signal processing pipeline of the ASIC package 200 (and / or each discrete functional unit) is fixed by the hardware (e.g. by the layout of cells and interconnects comprised in the ASIC package 200), such that the control logic can be highly optimised for the supported function(s) of a target device I use context, compared to the performance of a general-purpose MCU unit in the same device / use context. However, one or more functional units of the ASIC package may be programmable via modifiable software (e.g. firmware I microcode) to introduce flexibility into the control logic of the functional unit(s). This programmable capability may effected by providing software I microcode / a suitable CODEC to a specific functional unit, and / or one or more first programmable functional units may be configured to be provided with modifiable software code (e.g. firmware I micro-code / CODEC) to control the operation of one or more second functional units. For example, as one non-limiting example, a functional unit may be provided with a CODEC to support a voice command function. The CODEC comprised in a voice command functional unit is configured to sample data from a sensor (e.g. a flow sensor such as a microphone) and decode it into a digital signal which can be matched by the functional unit against a set of predefined digital signatures stored in a digital signature / voice command library on a memory element associated with the functional unit. Based on a match between a decoded digital signal and a specific predefined digital signature, the functional unit may be configured to trigger the operation of a different functional unit of the ASIC package 200 (e.g. changing a power level to be supplied to an electrical load by a power control functional unit). The voice command functional unit may associate digital signatures with control operations by receiving at least one audio signal, coding it via the stored CODEC into a digital signature which is stored in the command library, and receiving user inputs (e.g. from a manual input device comprised in the device in which the ASIC package is implemented, or via a wired or wireless connection with an external device supporting an APP for user input) which define what a control operation to be associated with the digital signature. The indicated control operation can then be associated with the signature in a data structure stored in the memory element. The ASIC package 200 shown in Figure 2 comprises a plurality of input and I or output terminals (indicated schematically as P1 to P8, and V_suppiy, and V_ground). These input and / or output terminals provide electrical interconnections between the control logic of the ASIC package, as defined by the functional units (e.g. 211, 212, 213, and 214, in the example of Figure 2), and components of the electrical / electronic device external to the ASIC package 200). As described further herein, respective ones of a plurality of functions of the electrical / electronic device (‘device’) may supported by one or more functional units of the ASIC package 200, in conjunction with one or more components which are in electrical I electronic communication with the functional unit(s). For example, a given function of the device may be supported by one or components (e.g. a sensor element, wireless transceiver I antenna, manual input device, or. battery) which provide input signals (e.g. a supply of AC or DC power, a signal indicative of a sensed parameter, a signal encoding a data packet, a signal indicative of user input to a button or other manual input device) to one or more functional units of the ASIC package 200 (in a parallel or series signal path), wherein the transmission of digital or analogue electrical signals from the relevant component(s) to one or more of the functional units is effected via electrical connections between the component(s) and one or more terminals of the ASIC package 200, and electrical interconnects within the ASIC package (not shown in Figure 2) linking each terminal to one or more functional units. Additionally, or alternatively, a given function of the device may be supported by one or more components (e.g. an aerosol generator or other electrical load, user feedback device, wireless transceiver, or power source) which receive(s) output signals (e.g. a charging current, a drive current for an aerosol generator or other electrical load, a signal encoding a data packet, or a signal encoding user feedback to be output by a user feedback device) from a functional unit of the ASIC package 200, wherein the transmission of digital or analogue electrical signals to the relevant component(s) from one or more functional units is effected via electrical connections between the component(s) and one or more terminals of the ASIC package 200, and the transmission of digital or analogue electrical signals from the relevant component(s) to one or more of the functional units is effected via electrical connections between the component(s) and one or more terminals of the ASIC package 200, and electrical interconnects within the ASIC package (not shown in Figure 2) linking each terminal to one or more functional units. It will be appreciated the ASIC package 200 of Figure 2 is represented schematically, and the interconnects via which circuit elements of each functional unit (e.g. 211 , 212, 213, and 214) is electrically connected to one or more of the terminals of the ASIC package 200 are not explicitly shown as these will depend on the specific routing defined during design of an ASIC package for a particular set of potential use contexts. The specific network of interconnects from each functional unit of the ASIC package 200 to one or more terminals may be designed according to the particular function each functional unit is configured to support. It will be appreciated that each terminal may connect to more than one functional unit (for example, each functional unit is typically directly or indirectly connected to power terminals V_suppiy and Vground), and that inputs I outputs associated with a given terminal may be associated simultaneously with a plurality of functional units (e g. two or more functional units may receive the same input signal(s) provided at the same input pin(s), and I or two or more functional units may provide outputs at the same output pin(s), either simultaneously in time, or at different times). Furthermore, within the ASIC package 200, electrical interconnects between circuit elements associated with each respective functional unit may be provided to allow the passing of input and I or output signals in a signal flow / chain comprising multiple functional units, to support a certain required function. For example, a first functional unit may perform analogue-to-digital conversion (ADC) of input signals received at a first terminal, and pass resulting digital signals to a second functional unit; and / or a first functional unit may process one or more sensor inputs received at one or more input terminals, and send signals representative of sensed parameters to a second functional unit which packages the parameters into one or more data packets for storage in memory and / or transmission to an external computing device. Functional units may comprise circuit elements configured to implement control logic supporting any suitable function of an integrated circuit which is known to the skilled person. Examples of functional units in the operating context of an aerosol provision system may include analogue to digital conversion (ADC) units, digital to analogue conversion (DAC) units, flash memory units, binary register units, arithmetic logic units (ALU), power supply units for provision of current to an electrical load such as an aerosol generator/ heater element (e.g. pulse width modulation (PWM) and / or pulse frequency modulation (PFM) drive units, such as switched mode power supply (SMPS) units), battery charging controller units, microelectromechanical system (MEMS) sensor units (e.g. MEMS airflow sensor units), single- or multiple-LED drive units, pixilated display panel drive units (e.g. touchscreen display panel drive units), and ASIC package master control units (which modify the operation / control logic of other functional units of the ASIC package), the latter of which may comprise functional configuration setting units as referred to herein. It will be appreciated that the specific control logic implemented in each functional unit, and the manner in which said control logic is implemented (e.g. in terms of logic synthesis, placement, and routing), is not of particular significance, and may be implemented in accordance with standard procedures for integrated circuit I ASIC design known to the skilled person, and as described further herein. It will be further appreciated that whilst the ASIC package 200 may typically be configured such that all functional units comprise ASIC circuitry configured and fabricated according to ASIC design principles (e.g. comprising interconnected hardware gates fabricated via photolithography or a similar semiconductor fabrication process), the term ‘ASIC package’ can also refer to packages in which one or more functional units are implemented as a field-programmable gate array (FPGA), or MCU, provided at least one or more second functional unit(s) is / are implemented as an ASIC (i.e. the ASIC package may be considered in some instances to comprise a ‘system-on-chip’ (SOC) architecture, comprising at least one ASIC functional unit).

The ASIC package 200 may be fabricated according to approaches known to the skilled person. For example, the ASIC package 200 may be fabricated using a wafer / chip I die of semiconductor material comprising the control logic, implemented using standard and / or custom cells. For example, control logic of the selected set of functional units (as determined according to approaches set out further herein) may be translated into a hardware description language (e.g. Verilog or VHDL), in a register-transfer level (RTL) design stage. There may typically follow a functional verification stage, where the control logic is simulated (e.g. via bench testing, formal verification, emulation, or creating and evaluating an equivalent pure software model). There may typically follow a logic synthesis stage where the RTL design is transposed I compiled into a set of standard or custom cells, typically derived from a standardcell library of logic gates configured to perform specific functions, to form a gate-level netlist. In a placement stage, the gate-level netlist is processed to derive a placement of the cells on a die (e.g. a semiconductor die comprising, for example, a silicon chip or wafer). During placement, the standard cell positioning is typically optimised for efficiency and robustness. In a routing stage, the netlist is typically used to design appropriate electrical connections between the cells, to provide the control logic. The output of the placement and routing stages is typically the derivation of the photo-mask(s) (‘masks’) which will be used to fabricate the circuitry of the ASIC on the die material using photolithographic techniques, though other techniques for fabrication of ASIC control logic may equally be used.

Where the operating context of the ASIC package 200 comprises an aerosol provision system, the aspects of operation in association with which the plurality of functional blocks of the ASIC package 200 are configured to provide monitoring and / or control functions may be selected from a list comprising:

• control of current to an aerosol generator.

• control of one or more display elements.

• control of a haptic feedback element.

• control of an audible feedback element.

• monitoring of a user input interface.

• control of a wireless communications module.

• control of a wired communications module. • control of charging of a power supply comprised in the electronic aerosol provision system.

• monitoring of a temperature associated with a operation of the aerosol provision system.

• monitoring of a temperature associated with a charging or discharging operation (e.g. a temperature of a power source and / or power control circuitry).

• monitoring of any interruption or error state associated with operation of the ASIC package and / or a device in which the ASIC package is integrated .

It will be appreciated this list is exemplary and non-exhaustive (and associated with a particular, exemplary use context), and a functional unit / block I module of the ASIC package may be configured to provide control logic associated with respective ones of all or a subset of any list of possible functions known to the skilled person, depending on the device(s) to be supported by a controller unit comprising the ASIC package. Accordingly, different ASIC packages according to the present disclosure may support different numbers of functional units / blocks I modules.

Thus, according to embodiments of the present disclosure, an ASIC package is fabricated implementing control logic associated with a set of n functional units, each of which supports different potential functionality of a device in which the ASIC package may be implemented (such as exemplary functions associated with an aerosol provision system, as described herein). It will be appreciated there may be a one-to-one mapping between functional units and the supported functions, and / or a plurality of functional units may support a single function (i.e. each of the plurality of units supports a sub-element of said function), and I or a plurality of functions may be supported by a single functional unit. Thus where the ASIC package 200 comprises n functional units, supporting m functions, there may be m=n functions, or m>n, functions, or m<n functions. What may be considered significant for the approaches herein is that the ASIC package 200 comprises at least two functional units, and that the ASIC package 200 is configured to be set into a target functional configuration selected from a plurality of different functional configurations, wherein each of the plurality of functional configurations comprises a different combination of operating states / statuses associated with respective ones of the plurality of functional units. Thus each of the n functional units may be configured into a different operating status (e.g. enabled / disabled), either reversibly or non-reversibly, depending on what subset of the n functional units is required in a given context, based on the function set the context requires the ASIC package to support. The set of n functional units is typically defined for a given ASIC package to cover a total (or ‘global’) set of functions which may be required across a set of devices / use contexts in which the ASIC package may be used, each of which may have overlapping functional requirements. Table 1 shows 3 exemplary use contexts, Context A, Context B, and Context C, indicating which of 10 global functions (i.e. F1 to F10) are required to be supported in each context (T indicates function requires support, and ‘0’ indicates function does not require support). Whilst each context comprises fewer than 10 functions (i.e. it comprises a local, device specific function set), it can be seen that the total, global function set required to support any of the specific contexts comprises all of the functions F1 to F10. This principle can be generalised to determine a global function set for any number of contexts, each comprising a local function set.

Table 1

This relationship between each of a plurality of specific contexts and the required operating status of each of the n functional units of the global function set is further illustrated in an aerosol provision system context by the following examples. An exemplary Device A is configured with components to support 3 functions, namely control of a heater, control of a display element comprising an LED, and monitoring of an operating parameter (e.g. heating temperature). More specifically, Device A may be a relatively simple (e.g. disposable) device, which is not configured to be recharged or refilled with aerosol generating material, and which has a simple, single-LED display element, and a temperature sensor to detect overheating of the heater. Exemplary Device B is be a more complex device, supporting a wider range of functions. It may implement the same heater control scheme and temperature sensing scheme as Device A, but comprise a more complex display element (e.g. an illuminated, pixilated display indicating number of puffs taken and remaining battery charge), a touchpad to provide user inputs, and further provide haptic feedback and audible alerts to indicate certain statuses (e.g. low battery, end of puff). Device B may also support recharging of the battery via a wired electrical connector interface (e.g. a USB-C cable). Device C is a more complex device again which supports the functions of Device B, with wireless instead of wired charging (e.g. via induction), and further supports wireless communications via a Bluetooth Low Energy (BLE) data transfer protocol. Devices B and C may be considered reusable devices, which can be recharged, and may be refilled with aerosol generating material (e.g. via switching of disposable cartridges). The example of aerosol provision systems is only for illustration, and this concept can be generalised to a set of other devices, with different functions to be supported.

Thus the total / global function set required to support any of Devices A, B, and C, comprises 8 functions, namely: control of current to aerosol generator, control of display element(s), control of haptic feedback element(s), control of audible feedback element(s), monitoring of user input interface, control of wireless communications module, control of charging of power supply, and monitoring of environmental / operating parameter. It will be appreciated some of the functions are either present or not-present in a given device / context, and other functions, where present, have a plurality of different potential ‘enabled’ operating statuses. For example, in Device A, the function of ‘control of display element(s)’ is carried out according to a simple single-LED mode, whereas in Devices B and C, control of the same function is carried out according to a pixilated display unit mode; and in Device B, control of the charging function is carried out in a wired mode, whereas in Device C, control of the same function is carried out in a wireless mode.

To support each of the potential use contexts (e.g. Devices A, B, and C, in the example above), the ASIC package 200 must be configured to be set into any one of at least 3 different target functional configurations, wherein each functional configuration comprises a different set of operating statuses associated with respective functional units I blocks which provide control logic associated with each function. The respective operating statuses for functional units of the ASIC package, associated with a suitable target configuration for each of Devices A, B, and C, from the example above, are indicated in Table 2 below.

Table 2

Typically, provision of a controller unit I controller units to support functions of Devices A, B, and C, with their different sets of functions, and different associated operating statuses (including sub-statuses where enabled), would usually require either (i) different devicespecific software / firmware loaded onto a common MCU which could be utilised in each device (with resulting lack of hardware optimisation, and potentially higher per-unit cost); (ii) different device-specific software / firmware loaded onto different MCUs specified for each respective device; or (iii) design of a different ASIC for each respective device. The inventor has recognised that by providing a shared ASIC package design which has the ability to support any of the required functions of a plurality of devices (e.g. Devices A, B, and C), via provision of functional units configured to support the entire set of required functions across all devices, the same ASIC package can be used in any of the devices, with the functional configuration which defines the operating status of each functional block being configured differently for each device type according to approaches set out herein. Thus the optimisation benefits of using an ASIC can be realised, along with the flexibility of supporting multiple use cases, which are typically only realisable at present with an MCU or FPGA.

Thus design of an ASIC package 200 according to the present disclosure first requires definition of the potential use cases and their associated functions (e.g. a plurality of target devices in which the ASIC package may be used, and the set of functions the ASIC package will be required to support in each target device). This step defines the total function set for the ASIC package. Next, a set of operating statuses is defined, on a per-function basis, by determining for each function the different implementation details of the function in the plurality of use cases (e.g. devices). For example, some functions will always be enabled (such as ‘control of current to aerosol generator’ in each of Devices A, B, and C), and some may be either enabled or disabled. Any of the ‘enabled’ operating status may have sub-statuses defined, as described above. Typically, different ‘enabled’ statuses are defined at least in part by the component(s) to which the ASIC package is connected within the device in order to support the function in each of the use cases. Thus, for example, as set out above, the control logic and number of input I output terminals required to support the function of ‘control of display element(s)’ will differ depending on whether the display element(s) comprise one or more LEDs, or comprise a pixilated display; and the control logic and number of input / output terminals required to support the function of ‘control of charging of power supply’ will differ depending on whether the charging is implemented via a wired connection (e.g. USB-C) or a wireless connection (e.g. via inductive charging hardware). Depending on operating status of a given functional unit of the ASIC, it may be configured to receive and provide different signals from / to different ones of the terminals of the ASIC package, with different characteristics (e.g. in terms of voltage, current, and frequency, and whether the signals are analogue or digital signals). These requirements can be determined in the usual manner known to the skilled person, based on known principles of ASIC design.

Once the total / global set of functions required to support any of the different use contexts / devices is defined, the required set of functional units and associated operating statuses required to support each function of the global function set can also be defined. Where a functional unit comprises more than one ‘enabled’ operating status, wherein each operating status comprises different control logic (in terms of number of input / output terminals associated with operation, and I or the processing flow, and / or the characteristics of input I output signals), the specific control logic for each different ‘enabled’ operating status of a given functional unit may be configured by providing different hardware (e.g. a different functional sub-unit) to support each operating status, or by providing different software / micro-code for each functional unit, to selectably run on the same functional unit hardware, with the software / micro-code to be used being different depending on which enabled operating status is to be supported. The implementation of each functional unit of the ASIC package (e.g. in terms of design and fabrication) to support the required functions and associated operating statuses may be carried out according to approaches for ASIC design known to the skilled person, and as described in further detail herein. Thus the implementation of each functional unit and its interconnections (if present) with other functional units, may typically be effected via a registertransfer level (RTL) design step (e.g. using Verilog or VHDL), followed by a logic synthesis stage, leading to placement and routing stages. The number of terminals of the ASIC package 200 will typically be defined during this design stage, based on the number of input / output channels required to support each functional unit, and the degree to which functional units may be able to share different input / output channels.

What is considered significant in embodiments of the present disclosure is that the ASIC package 200 is configured to be set into a given one of a plurality of possible target functional configurations This may be achieved in a reversible or non-reversible manner. As set out further herein, each functional configuration is associated with a different set of operating statuses associated with each of the plurality of functional units of the ASIC package, and this ‘setting’ of the ASIC package into a functional configuration comprises modifying the ASIC package, which by default may be manufactured as a ‘master’ ASIC package having all functional units operational / enabled for use, or non-operational / disabled for use, so that the operational status of at least one functional unit is changed from enabled to disabled, or from a first enabled sub-status to a second enabled sub-status. Typically, in all embodiments of the present disclosure, this modification may be effected post-manufacture I fabrication of the ASIC package. This may be effected as processing stage following, for example, photolithographic fabrication of the ASIC control logic, or as a processing stage following delivery of master ASIC packages to a customer, but before assembling the ASIC packages into devices, or as a step after a given ASIC package is assembled into a device.

In a first set of embodiments, the ASIC package 200 can be set into a given one of the plurality of target functional configurations in a non-reversible manner (in other words, in a manner which cannot be reversed without further physical modification of the ASIC package). In a first set of embodiments, this is effected via physical manipulation of at least one structural element of the ASIC package. For example, one or more fusible links may be defined on electrical interconnects between (i) one or more functional units and the input I output terminals to which they are directly or indirectly connected, and / or (ii) one or more of the functional units (e.g. electrical interconnects allowing signals to be routed between functional units, where a processing path involves a chain of control logic implemented by two or more functional units). The determination of locations for the fusible links may be defined in the routing stage. The number of fusible links and their positions on electrical paths of the ASIC (e.g. within functional units, on interconnects between them, and I or on interconnects between terminals of the ASIC package 200 and the functional units) are defined such that that each of the plurality of potential functional configurations of the ASIC package can be expressed in terms of a different pattern of fusible links to be ruptured to provide a routing network which provides control logic supporting the required operating statuses associated with each of the functional units of the ASIC package. Thus in the example above, rupturing a first subset of fusible links provides a ‘Configuration A’ ASIC package, suitable for supporting functions of Device A, in which the functional units associated with control of current to an aerosol generator and monitoring or heater temperature are enabled, and the functional unit associated with control of a display element is in a ‘single LED’ mode (e.g. a functional sub-unit with control logic for supporting visual feedback via a single LED is enabled, and a second functional sub-unit with control unit for supporting visual feedback via a pixilated display is disabled). All other functional units listed in Table 2 are disabled. Thus the rupturing the first set of fusible links associated with ‘Configuration A’ provides a routing path for signals within the ASIC package 200 which in effect causes the ASIC package to operate as if it only comprised functional units associated with the functions supported by Device A (as listed in Table 1). Similarly, rupturing a second subset of the fusible links provides a ‘Configuration B’ ASIC package, suitable for supporting functions of Device B, and rupturing a third subset of the fusible links provides a ‘Configuration C’ ASIC package, suitable for supporting functions of Device C. The pattern of fusible links to be ruptured for each functional configuration may result in functional units required to be disabled in the functional configuration being electrically isolated from all the terminals of the ASIC package, or from receiving electrical power, or may alter the manner in which any given functional unit is connected to respective ones of the terminals and I or other functional units, in order to modify the control logic of the ASIC package when the links are ruptured. By way of a non-limiting example, a given ASIC package may comprise a functional unit configured to provide a charging function as described further herein. In the ASIC package in the as-manufactured state, electrical interconnects may connect this charging functional unit to a master control functional unit configured to trigger charging and set charging parameters for the charging functional unit, and electrical interconnects may connect the charging functional unit to one or more power supply terminals to receive external power (e.g. from a charging connector), and to one or more battery terminals to provide charging current to the battery. When the ASIC package is configured for a device of Device D, where charging is not required, a pattern of fusible links disposed on these sets of electrical interconnects may be ruptured. Isolating an un-needed functional unit in this manner may provide safety benefits, in preventing triggering of un-needed functions, and also reduce power draw of the ASIC package by reducing the power density of the ASIC package.

Where the target configuration of the ASIC package is set by physical manipulation of one or more structural elements of the ASIC package, this may therefore may comprise breaking of at least one fusible link. In some embodiments, the ASIC package is configured such that the fusible links are accessible for rupturing after the ASIC package is fabricated (e.g. via a photolithography fabrication process), via a process in which conductive material is removed from a portion of the ASIC package to break an existing current path between a predefined pair of electrical nodes (i.e. a fusible link position). The conductive material at a one or more fusible link positions may be removed via a mechanical process (e.g. scraping or cutting of material), a chemical etching process, or a laser ablation process. Any of these processes may be carried out as a ‘finishing’ process once the die for the ASIC package has been fabricated to producing ‘master’ ASIC packages, which can then be configured into any of a Configuration A, B, or C, ASIC package via a finishing step comprising the removal of conductive material comprising one or more fusible links, to arrive at an ASIC package with a specific target functional configuration.

In some embodiments, the ASIC package comprises control logic (e.g. a configuration-setting functional unit) configured to cause a current to be applied through the at least one fusible link suitable to cause the breaking of the fusible link. Thus in response to an input signal received at one or more terminals of a ‘master’ ASIC package, indicating to the configuration-setting functional unit a target configuration for the ASIC package, the configuration-setting functional unit is configured to cause current at a suitable power level to be passed through one or more target fusible links to cause fusible link rupture, where the set of fusible links to be ruptured is dependent on the target configuration, as described above. Thus in response to a predefined control signal supplied to at least one terminal (e.g. across a control terminal and a ground terminal such as V_grOund), applied, for example, after fabrication of a master ASIC package where all fusible links are unruptured, a configuration-setting functional unit (where included) routes a rupturing current to particular circuit paths of the ASIC package to induce a pattern of ruptured fusible links associated with the target functional configuration with which the predefined control signal is associated. In other embodiments, the fusible link positions may be substituted for arrangements of diodes, wherein the ASIC package is configured to be set into the target functional configuration by the configuration-setting functional unit being configured to transmit control signals to set the conduction state(s) of at least one of the one or more diodes or other switch elements (e.g. solid state switches such as field-effect transistors) to either allow current to pass, or prevent passing of current. In some embodiments where the fusible link positions are substituted for switch elements, a functional unit of the ASIC package responsible for setting the ASIC package configuration may be pre-configured with a register indicating a set of switch element states to implement (either to open or closed) for each of the potential target configurations, by providing appropriate control signals (e.g. gate voltages where the switch elements are field-effect transistors) to modify their states. The functional unit may be configured apply a different configuration of switch states (i.e. via a specific pattern of switch control signals) based on detecting a particular voltage at a control terminal connected to the functional unit by appropriate electrical interconnects within the ASIC package, where the register associates configurations with predefined ranges of voltage. The control terminal may in some embodiments comprise a terminal to be connected to a battery, or to a power controller of the device in which the ASIC package is to be used (e.g. a power controller which regulates, for example by stepping up or down, the battery voltage). These embodiments may be considered to be similar to those comprising fusible links, except that modification of the circuit paths within the ASIC package is effected by reversibly switching the states of diodes (or other switch elements, such as field-effect transistor (FET) switches) to on or off, instead of irreversibly setting the states of fusible links to be broken or broken.

In other embodiments, the modification of electrical connectivity of links between circuit elements of the ASIC package effected to set a master ASIC package into one of a plurality of potential target configurations is achieved by configuring a set of nodes at locations on the circuitry of the ASIC package at which conductive material can be added to complete a circuit path. The locations of the nodes can be defined such that adding conductive material completes one or more circuit path element disposed at interconnects between (i) one or more functional units and the input / output terminals to which they are directly or indirectly connected, and / or (ii) one or more of the functional units (e.g. electrical interconnects allowing signals to be routed between functional units, where a processing path involves a chain of control logic implemented by two or more functional units). The determination of locations for the nodes may be defined in the routing stage, as with the determination for locations of fusible links described above. The number of nodes and their positions on electrical paths of the ASIC (e.g. within functional units, on interconnects between them, and I or on interconnects between terminals of the ASIC package 200 and the functional units) are defined such that that each functional configuration of the ASIC package can be expressed in terms of a different pattern of nodes at which conductive material is to be added. Thus in the example above, providing conductive material at a first subset of node locations provides a ‘Configuration A’ ASIC package, suitable for supporting functions of Device A, in which the functional units associated with control of current to an aerosol generator and monitoring or heater temperature are enabled, and the functional unit associated with control of a display element is in a ‘single LED’ mode (e.g. a functional sub-unit with control logic for supporting visual feedback via a single LED is enabled, and a second functional sub-unit with control unit for supporting visual feedback via a pixilated display is disabled). All other functional units listed in Table 2 are disabled. Thus the provision of conductive material at a first subset of node locations associated with ‘Configuration A’ provides a routing path for signals within the ASIC package 200 which in effect causes the ASIC package to operate as if it only comprised functional units associated with the functions supported by Device A (as listed in Table 1). Similarly, the provision of conductive material at a second subset of node locations leads to a ‘Configuration B’ ASIC package, suitable for supporting functions of Device B, and the provision of conductive material at a third subset of node locations leads to a ‘Configuration C’ ASIC package, suitable for supporting functions of Device C. Thus, in some embodiments of the present disclosure, the physical manipulation of the at least one structural element of the ASIC package comprises adding conductive material to a portion of the ASIC package to form a new current path between a predefined pair of electrical nodes. The conductive material may be added via any approach known to the skilled person, such as, for example, by soldering or other deposition process. In some embodiments, the approach of providing nodes at which conductive material may be added to complete circuit paths is combinable with the fusible link approaches described herein, such that a master ASIC package comprises both fusible links, and nodes at which conductive material may be added, and each of the plurality of potential target configurations is associated with a different pattern of fusible links to be ruptured and / or nodes at which conductive material is to be added to arrive at a routing path for electrical signals within the ASIC package which provides control logic corresponding to enablement / disabling of the relevant functional units associated with a respective use context / device in which the ASIC package 200 is to be implemented. In any of these embodiments, the pattern of fusible link ruptures and / or conductive material addition nodes in effect allows modification (via fusible link rupture and I or conductive material addition) of the routing of electrical interconnects between functional units, in order to modify the hardware control logic of the ASIC package between different configurations supporting different operating states of different functional units selected from the global set of functional units for which hardware control logic is provided on the semiconductor die.

In some embodiments of the present disclosure, the ASIC package 200 comprises a memory element, and further comprises control logic configured to store a value in the memory element, the value being one of a set of predefined values respectively associated with the plurality of functional configurations, wherein the control logic is further operable to set as the functional configuration a one of the plurality of different functional configurations which is associated with the one of the predefined values. The control logic may be implemented via a configuration-setting functional unit comprised in the ASIC package, as described further herein, configured to receive an input signal from an external source to indicate a target configuration for the ASIC package, and based on a step of determining the indicated functional configuration, to set as a value or data package in the memory element a corresponding value I indicator uniquely identifying the target configuration. Based on the specific value I indicator stored in the memory element, the configuration-setting functional unit is configured to set the target configuration of the ASIC package via one of the approaches set out herein (i.e. non-reversibly, via transmission of rupturing signals to rupture a predefined pattern of fusible links; or reversibly, via transmission of signals to reversibly set the conduction state of a set of diodes or other switchable elements). The memory element (or a further memory element) typically stores information indicating the pattern of fusible elements to be ruptured, or switch states to be changed, in order to arrive at each one of the plurality of supported functional configurations.

In embodiments where the setting of the target functional configuration of the ASIC package is effected by a configuration-setting functional unit of the ASIC package, in response to detection of a predefined signal by the configuration-setting functional unit, said predefined signal uniquely identifying one of a plurality of potential target configurations, the configurationsetting functional unit is configured in one or more of a plurality of ways to detect such a predefined signal. For example, the ASIC package (i.e. a configuration-setting functional unit of the ASIC package) may be configured to set the selected functional configuration via detection of at least one predefined characteristic of an input signal applied to one or more of the plurality of terminals / pins of the ASIC package, wherein a functional configuration to be set by the ASIC package is associated with the predefined characteristic. In these embodiments, the predefined characteristic may comprise a combination (e.g. a pattern) of one or more of the plurality of pins / terminals at which the input signal is detected, and wherein the ASIC package is configured with control logic operable to set as the functional configuration a particular one of the plurality of different functional configurations which is associated with a specific combination of the one or more of the plurality of terminals at which the input signal is detected. In some embodiments, at least one of the one or more of the plurality of terminals comprises at least one control terminal of the ASIC package which is not associated with the control by the plurality of functional blocks of any of the aspects of operation associated with the use context I device in which the ASIC is to be implemented. Thus the control terminal may be a dedicated terminal for receiving of control signals used to indicate a target configuration for the ASIC package, and the plurality of terminals comprises the control terminal and a ground, GND, terminal (e.g. Vground). In addition, or alternatively, the predefined characteristic of the signal may comprise a voltage detected at the one or more of the plurality of terminal, and wherein the ASIC package is configured with control logic operable to set as the functional configuration a one of the plurality of different functional configurations which is associated with a range of voltage associated with the voltage of the input signal. In some instances, the control signal is applied across the V_SUppiy and Vground terminals, and the respective ranges of voltage associated with respective target configurations are set to correspond to (i.e. include) the value of battery / power source voltage (e.g. when fully charged), or range of operating voltages, associated with respective devices / operating contexts in which the ASIC may be used. Thus, as a non-limiting example, if a Device A provides a supply of power to the ASIC package at a voltage of between 4 to 5 volts, and a Device B provides a supply of power to the ASIC package at a voltage of between 5.5 to 6.5 volts, and a Device C provides a supply of power to the ASIC package at a voltage of between 7 to 8 volts, the ASIC package may be configured to set the target configuration to Configuration A if the supply voltage is detected as being between 4 to 5 volts, Configuration B if the supply voltage is detected as being between 5.5 to 6.5 volts, and to Configuration C if the supply voltage is detected as being between 7 to 8 volts. The ASIC package may alternatively or additionally be configured to detect electrical parameters (e.g. inductance, impedance, resistance, capacitance) of components electrically connected to its terminals, and / or the pattern of terminals to which components are electrically connected, and set a specific target configuration based on the determined values of electrical parameters and / or pattern of terminals at which electrical connections to components are detected. For example, as a non-limiting example, if a Device A comprises an aerosol generator comprising a heater with a resistance of 0.8 ohms, and a Device B comprises an aerosol generator comprising a heater with a resistance of 1.3 ohms, and a Device C comprises an aerosol generator comprising a heater with a resistance of 2.2 ohms, the ASIC package may be configured to set the target configuration to Configuration A (i.e. via provision of a signal to the functionalconfiguration setting unit) if resistance of a heater connected to a functional unit responsible for control of current to an aerosol generator detects a resistance of a connected component of between 0 and 1 ohms, to set the target configuration to Configuration B if the resistance is between 1 and 2 ohms, and to set the target configuration to Configuration C if the resistance is between 3 and 4 ohms. In some embodiments, the predefined characteristic of the signal comprises a signal pattern detected at one or more of the plurality of terminals, and the ASIC package is configured with control logic (e.g. a functional-configuration setting functional unit) operable to set as the functional configuration a one of the plurality of different functional configurations which is associated with a signal pattern of the input signal. For example, the signal may comprise a power supply signal received from a power source, and the pattern may comprise a frequency of the signal.

Thus there has been described an application specific integrated circuit, ASIC, package, for use in an electrical or electronic device, the ASIC package comprising: a plurality of functional units, wherein each of the plurality of functional units is configured with control logic operable to provide a discrete monitoring and / or control function associated with an aspect of operation of the electronic aerosol provision system, and wherein an operating status of each of the functional units is independently configurable into one of an enabled and non-enabled operational state; and a plurality of terminals, comprising a plurality of power supply terminals and a plurality of input and / or output terminals, wherein each one of the plurality of input and / or output terminals is connected to at least one of the plurality of functional units. With reference to Figure 3, a method is also provided of operating such an ASIC package, wherein the method comprises, in a first step, S1 , setting the ASIC package into a target functional configuration selected from a plurality of different functional configurations, wherein each of the plurality of functional configurations comprises a different combination of operating states associated with respective ones of the plurality of functional units. Step S1 may be carried out in accordance with approaches described herein.

The various embodiments described herein are presented only to assist in understanding and teaching the claimed features. These embodiments are provided as a representative sample of embodiments only, and are not exhaustive and/or exclusive. It is to be understood that advantages, embodiments, examples, functions, features, structures, and/or other aspects described herein are not to be considered limitations on the scope of the invention as defined by the claims or limitations on equivalents to the claims, and that other embodiments may be utilised and modifications may be made without departing from the scope of the claimed invention. Various embodiments of the invention may suitably comprise, consist of, or consist essentially of, appropriate combinations of the disclosed elements, components, features, parts, steps, means, etc, other than those specifically described herein. In addition, this disclosure may include other inventions not presently claimed, but which may be claimed in future. The delivery system described herein can be implemented as a combustible aerosol provision system, a non-combustible aerosol provision system or an aerosol-free delivery system.

Claims

1. An application specific integrated circuit, ASIC, package, for use in an electrical or electronic device, the ASIC package comprising: a plurality of functional units, wherein each of the plurality of functional units is configured with control logic operable to provide a discrete monitoring and / or control function associated with an aspect of operation of the electrical or electronic device, and wherein an operating status of each of the functional units is independently configurable into one of an enabled and non-enabled operational state; and a plurality of terminals, comprising a plurality of input and I or output terminals, wherein each one of the plurality of input and I or output terminals is connected to at least one of the plurality of functional units; wherein the ASIC package is configured to be set into a target functional configuration selected from a plurality of different functional configurations, wherein each of the plurality of functional configurations comprises a different combination of operating states associated with respective ones of the plurality of functional units.

2. The ASIC package of claim 1 , configured to be set into the target functional configuration in a reversible manner.

3. The ASIC package of claim 2, further comprising one or more diodes, wherein the ASIC package is configured to be set into the target functional configuration by setting a state of at least one of the one or more diodes.

4. The ASIC package of claim 1 , configured to be set into the target functional configuration in a non-reversible manner.

5. The ASIC package of claim 4, configured to be set into the target functional configuration via physical manipulation of at least one structural element of the ASIC package.

6. The ASIC package of claim 5, wherein the structural element comprises one or more fusible links, and the physical manipulation comprises breaking of the at least one fusible link.

7. The ASIC package of claim 6, further comprising control logic configured to cause a current to be applied through the at least one fusible link suitable to cause the breaking of the fusible link.

8. The ASIC package of claim 5, wherein the physical manipulation of the at least one structural element comprises removing conductive material from a portion of the ASIC package to break an existing current path between a predefined pair of electrical nodes.

9. The ASIC package of claim 8, wherein the conductive material is configured to be removed via a mechanical process, a chemical process, or a laser ablation process.

10. The ASIC package of claim 5, wherein the physical manipulation of the at least one structural element comprises forming a new current path between a predefined pair of electrical nodes.

11 . The ASIC package of claim 9, wherein each predefined pair of electrical nodes is configured to be connected to form a new current path by addition of conductive material via soldering.

12. The ASIC package of claim 2, further comprising a memory element, and further comprising control logic configured to store a value in the memory element, the value being one of a set of predefined values respectively associated with the plurality of functional configurations, wherein the control logic is further operable to set as the functional configuration a one of the plurality of different functional configurations which is associated with the one of the predefined values.

13. The ASIC package of any of claims 2 to 7, and 12, configured to set the selected functional configuration based on detection of at least one predefined characteristic of an input signal applied to one or more of the plurality of terminals, wherein a potential functional configuration to be set by the ASIC package is associated with each predefined characteristic.

14. The ASIC package of claim 13, wherein the predefined characteristic comprises a combination of one or more of the plurality of terminals at which the input signal is detected, and wherein the ASIC package is configured with control logic operable to set as the functional configuration a one of the plurality of different functional configurations which is associated with a specific combination of the one or more of the plurality of terminals at which the input signal is detected.

15. The ASIC package of any of claims 13 to 14, wherein the predefined characteristic comprises a voltage detected at the one or more of the plurality of terminals, and wherein the ASIC package is configured with control logic operable to set as the functional configuration a one of the plurality of different functional configurations which is associated with a range of voltage associated with the voltage of the input signal.

16. The ASIC package of any of claims 13 to 15, wherein the predefined characteristic comprises a signal pattern detected at one or more of the plurality of terminals, and wherein the ASIC package is configured with control logic operable to set as the functional configuration a one of the plurality of different functional configurations which is associated with a signal pattern of the input signal.

17. The ASIC package of claim 16, wherein the signal pattern comprises a frequency of the signal.

18. The ASIC package of any of claims 13 to 17, wherein at least one of the one or more of the plurality of terminals comprises at least one control terminal not associated with the control, by the plurality of functional units, of any of the aspects of operation associated with the electrical or electronic device.

19. The ASIC package of claim 18, wherein the one or more of the plurality of terminals comprises the control terminal and a ground, GND, terminal.

20. The ASIC package of any of claims 1 to 19, wherein each of the plurality of functional units is connected to a discrete subset of the plurality of input and / or output terminals.

21 . The ASIC package of any of claims 1 to 20, wherein each of the plurality of functional units is operable to monitor inputs to and I or provide outputs to a discrete subset of the plurality of input and / or output terminals.

22. The ASIC package of any of claims 1 to 21, wherein the plurality of input and / or output terminals comprises a ground, GND, terminal and a positive supply line, VCC, terminal.

23. The ASIC package of any of claims 1 to 22, further configured to be set into a selected functional configuration following manufacture via a semiconductor device fabrication process.

24. The ASIC package of any of claims 1 to 23, further configured to be set into a selected functional configuration following assembly into an electrical or electronic device.

25. The ASIC package of any of claims 1 to 24, wherein the plurality of functional units comprise physical modules of circuitry comprised in a single semiconductor die.

26. The ASIC package of any of claims 1 to 25, wherein the electrical or electronic device comprises an aerosol provision system.

27. The ASIC package of claim 26, wherein the aspects of operation in association with which the plurality of functional units are configured to provide monitoring and / or control functions are aspects of operation of an aerosol provision system selected from a list comprising:

- control of current to an aerosol generator.

- control of one or more display elements.

- control of a haptic feedback element.

- monitoring of a user input interface.

- control of charging of a power supply comprised in the electronic aerosol provision system.

- monitoring of a temperature associated with a operation of the aerosol provision system

- monitoring of a temperature of a power source and / or power controller circuitry of the aerosol provision system.

- monitoring of any interruption or error state associated with operation of the ASIC package and / or the aerosol provision system.

28. An aerosol provision device comprising the ASIC package of any preceding claim.

29. An aerosol provision system comprising the aerosol provision device of claim 28.

30. An aerosol provision system comprising the ASIC package of any of clams 1 to 27.

31 . A method of modifying an application specific integrated circuit, ASIC, package, for use in an electrical or electronic device, the ASIC package comprising: a plurality of functional units, wherein each of the plurality of functional units is configured with control logic operable to provide a discrete monitoring and / or control function associated with an aspect of operation of the electrical or electronic device, and wherein an operating status of each of the functional units is independently configurable into one of an enabled and non-enabled operational state; and a plurality of terminals, comprising a plurality of input and / or output terminals, wherein each one of the plurality of input and I or output terminals is connected to at least one of the plurality of functional units; wherein the method comprises setting the ASIC package into a target functional configuration selected from a plurality of different functional configurations, wherein each of the plurality of functional configurations comprises a different combination of operating states associated with respective ones of the plurality of functional units.

32. A data processing apparatus comprising means for carrying out the method of claim 31.

33. A computer program product comprising instructions which, when the program is executed by a computer, cause the computer to carry out the method of claim 31.

34. A computer-readable medium having stored thereon the computer program product of claim 33.