CN207337445U - A kind of single-chip finance audio IC card optimizes circuit - Google Patents
A kind of single-chip finance audio IC card optimizes circuit Download PDFInfo
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- CN207337445U CN207337445U CN201720887118.XU CN201720887118U CN207337445U CN 207337445 U CN207337445 U CN 207337445U CN 201720887118 U CN201720887118 U CN 201720887118U CN 207337445 U CN207337445 U CN 207337445U
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- audio
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- safety chip
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Abstract
The utility model discloses a kind of single-chip finance audio IC card to optimize circuit, including a safety chip, contact module, non-contact modular and audio-frequency module, wherein：The safety chip is used to controlling, analyze and handling data；The contact module has contact communication function, including 7816 interfaces；The non-contact modular has the function of contactless communication, including RF antennas；The audio-frequency module has the function of acoustic communication, including switch, battery and piezo；The contact module, non-contact modular and the audio-frequency module access safety chip in parallel.The switch has 2 pins, wherein a pin is connected with the battery cathode, another pin is connected with GPIO1 mouthfuls.The GPIO1 interface channels are not only used as audio strobe signal path, but also are used as power channel.The utility model single-chip finance audio IC card optimization circuit have the advantages that improve connect audio-frequency module switch reliability, reduce delay, elimination operating mode falsely drop it is logical.
Description
Technical field
IC card technical field is the utility model is related to, more particularly to a kind of single-chip finance audio IC card circuit.
Background technology
Financial IC card is the instrument that modern information technologies are highly merged with financial service, using chip technology and financial industry
Standard, can have bank card concurrently, ensure the multi-functionals such as card, management card, have security, convenience, standard and scalability
The advantages that.With the development of globalization, its standardization is the important technical basis sex work of national economy and social development.China
The People's Bank accelerated the deployment of financial IC card popularization in 2010, and refer to important agenda.In Chinese
The new specification that people bank formally issues《China's finance integrated circuit (IC) calliper model (V3.0)》In, it is non-to small amount to connect payment application
Function is extended and perfect, support double coin electronic cash payment applications, and specification IC card internet terminal technical requirements, enrich
Security algorithm system, while also advance the application of financial IC card.
Financial IC card mainly includes contact card, contactless card and contact/non-contacting double-interface card.With people couple
The demand of the emerging means of payment, in the market have gradually appeared financial audio IC card.Financial audio IC card is embedded in financial IC card
Enter audio communication module circuit, while there is contact module, non-contact modular and audio-frequency module, financial IC card is not only possessed biography
Outside the contact communication pattern and contactless communication pattern of system, audio communication mode is also equipped with.
In the prior art, financial audio IC card enters audio work pattern, it is necessary to which the power supply for being also turned on safety chip connects
Mouth VCC, wherein GND and GPIO1 feet, VCC and GND are the power pins of safety chip, and electric energy, GPIO1 are provided for safety chip
Foot is used for distinguishing the contact operating mode and audio work pattern of financial audio IC card, enters audio mode for financial audio IC card
Gating signal is provided, when financial audio IC card enters audio work pattern, though GPIO1 is still input state, GPIO1 at this time
It is ineffective, it is not essential.Using the design of this audio gate, there are following defect：Switch and safety in audio-frequency module
Chip is connected reliability and is reduced, and switchs and is connected for three interface switches, first interface with a pole of battery in audio-frequency module, second connects
Mouth is connected with a power interface of safety chip, the audio gating interface GPIO1 connections of the 3rd interface and safety chip, it is necessary to
When three interfaces are also turned on, safety chip could enter audio gated mode, make switch connection reliability low；Increase delay,
User experience is influenced, to ensure that safety chip smoothly enters audio mode, it is necessary to delay be set in safety chip, in safe core
Piece is delayed a period of time after starting, it is ensured that three interfaces of switch are in connection status at the same time, and safety chip driver is changed
It is larger, while the introducing being delayed adds the stand-by period of user, influences user experience；Logical wind is falsely dropped there are operating mode
Danger, it is necessary to which three interfaces of switch connect at the same time, if audio gating interface when financial audio IC card enters audio work pattern
If GPIO1 is not connected when safety chip is gated, then financial audio IC card will falsely drop logical into contact work
Pattern.
Therefore, it is necessary to a kind of new single-chip finance audio IC card optimization circuit is proposed, to solve the above problems.
Utility model content
The utility model technical issues that need to address be to provide it is a kind of have improve connect audio-frequency module switch reliability,
Reduce delay, eliminate the single-chip finance audio IC card optimization circuit that operating mode falsely drops general character energy.
The utility model provides a kind of single-chip finance audio IC card optimization circuit, including a safety chip, contact
Module, non-contact modular and audio-frequency module, wherein：
The safety chip is used to controlling, analyze and handling data；
The contact module has contact communication function, including 7816 interfaces；
The non-contact modular has the function of contactless communication, including RF antennas；
The audio-frequency module has the function of acoustic communication, including battery, switch, buzzer；
The contact module, non-contact modular and the audio-frequency module access safety chip in parallel；
The safety chip includes not only using as audio strobe signal path, but also the GPIO1 used as supplying channels
Interface；
The switch has 2 pins, is respectively the first pin and second pin, and first pin connects the battery
Anode, the second pin connect the GPIO1 pins.
Preferably, the safety chip includes contact port, non-contact port and audio port.
Preferably, the contact port is 5 pins that 7816 interfaces define, and is respectively VCC, GND, CLK, RST, IO
This 5 pins.
Preferably, the non-contact port is two pins of LA and LB, and the both ends with the RF antennas are connected respectively.
Preferably, the audio port includes VCC, GND, GPIO1, GPIO2.1 and GPIO2.2 this 5 pins, wherein
VCC pin is shared with contacting port.
Preferably, the audio-frequency module includes battery, and switch and piezo, wherein one pole of battery directly connect with safety chip
Connect, another pole is directly connected to switch；The switch has 2 pins, is respectively the first pin and second pin, wherein first draws
Foot connects the battery cathode, and second pin connects the safety chip GPIO1 pins, and before ON switch, each of switch draws
Foot is all mutually to disconnect, and is mutually not turned on, after ON switch, 2 pin mutual conductions of switch；Two pin A of piezo
With pin B respectively with safety chip GPIO2.1, and GPIO2.2 mouthfuls connection.
Preferably, the switch is series between the battery and safety chip, by whether switching control battery to peace
Full chip power supply；Simultaneous Switching second pin is connected to the GPIO1 of safety chip, for distinguishing the power supply power supply of contact module-external
With audio-frequency module battery powered, the signal for starting audio-frequency module is provided to safety chip, meanwhile, the GPIO1 of the safety chip
Interface is arranged to input interface, is used as power channel, and electric energy is provided to safety chip.
Preferably, in described two pin A pins of piezo and B pins, the GPIO2.1 of A pins and safety chip is direct
Connection, the acoustic drive signals sent for receiving the safety chip, B pins can be straight with the GPIO2.2 pins of safety chip
Connect, can be also directly connected to VCC, GND or GPIO1, for receiving the audio signal sent from safety chip in succession.
Preferably, the contact module includes 7816 interfaces, and the connection of 7816 interface and safety chip follows China
Financial integrated circuit (IC) card related specifications, the i.e. VCC with safety chip, GND, CLK, this 5 pins of RST, IO directly connect
Connect.
Preferably, the non-contact modular includes RF antennas, and the connection of the RF antennas and safety chip follows Chinese gold
Melt integrated circuit (IC) card related specifications, i.e., this 2 pins of the LA and LB of described RF antennas and safety chip are directly connected to.
Preferably, contact module and the audio-frequency module share the VCC pin of safety chip, at work by VCC and
GND is safety chip power supply, and 7816 interfaces difference lies in contact module to be directly connected to VCC and GND, external power supply during work
Positive and negative anodes directly connected by 7816 interfaces with safety chip；Anode and safety chip VCC in audio-frequency module is direct
Connection, switch of having connected between anode and safety chip GPIO1, is only just connect when switching and closing by VCC and GPIO1 two
Mouth is powered for safety chip.
Compared with correlation technique, the single-chip finance audio IC card of the utility model optimization circuit by will contact module,
Non-contact modular and audio-frequency module access safety chip in parallel, the audio gating interface GPIO1 of safety chip is arranged to input
State, for receiving switch-off state, provides audio gating signal to safety chip, enters audio work in safety chip
After pattern, if GPIO1 is still input state, GPIO1 interfaces can be used to receive electric energy at this time, and the power supply as safety chip leads to
Road uses, and improves connection audio-frequency module switch reliability；Delay is reduced, strengthens user experience；Elimination operating mode is falsely dropped logical
Risk.
Brief description of the drawings
Fig. 1 is the structural principle block diagram that the utility model single-chip finance audio IC card optimizes circuit；
Fig. 2 is the circuit diagram that the utility model single-chip finance audio IC card optimizes circuit.
Embodiment
Below in conjunction with drawings and embodiments, the utility model is described in further detail.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the structure of the single-chip finance audio IC card circuit optimization of the utility model
Schematic diagram；Fig. 2 is the physical circuit schematic diagram that single-chip finance audio IC card optimizes circuit in Fig. 1.The single-chip finance sound
Frequency IC card optimization circuit includes a safety chip (safety chip commercially can directly be bought), contact module, non-contact mould
Block and audio-frequency module.The safety chip is used to controlling, analyze and handling data；The contact module has contact communication work(
Can, including 7816 interfaces；The non-contact modular has the function of contactless communication；The audio-frequency module has acoustic communication work(
Can, it includes switch, battery and piezo；The contact module, non-contact modular and the audio-frequency module access safety in parallel
Chip switch.
In the present embodiment, the safety chip meets PBOC2.0 and above specification.The audio-frequency module is contacted with described
Module, non-contact modular are used in conjunction with same safety chip.
The safety chip includes contact port, non-contact port and audio port, wherein contact port includes VCC,
Five contact port pinouts of GND, CLK, RST, IO.When needing the contact communication pattern using the single-chip finance audio IC card
When, it is the information exchange that can be achieved with payment terminal (not shown) by the contact port pinout.Meanwhile the audio-frequency module
It can be write with the working procedure and data of the non-contact modular by 7816 interfaces.
The contact module has contact communication function, including 7816 interfaces：7816 interface and safety chip
Five contact port pinouts of VCC, GND, CLK, RST, IO are electrically connected.Lead to when needing the contact using the single-chip financial IC card
It is the information exchange that can be achieved with payment terminal (not shown) by the contact port pinout during letter pattern.Meanwhile the sound
The working procedure and data of frequency module and the non-contact modular can be write by 7816 interface.
The non-contact modular has the function of contactless communication, including RF antennas：It is financial using the single-chip when needing
During the contactless communication pattern of IC card, it can be achieved and payment terminal (not shown) by the non-contact port pinout LA and LB
Information exchange.The working procedure and data of the audio-frequency module and the non-contact modular can also be write by the RF antennas
Enter.
The audio-frequency module has the function of acoustic communication, including switch, piezo and battery：The switch has 2 to draw
Foot, is respectively the first pin 1, second pin 2, when described switch off, 2 pins of switch mutually disconnect, wherein first
Pin 1 is electrically connected with battery cathode, and second pin 2 is electrically connected with the GPIO1 pins of safety chip, and the GPIO1 pins are at the same time
Used as power channel, with battery, switch and safety chip form an electrical circuit, and electric energy is provided to safety chip；Institute
Stating piezo has 2 pins, and the GPIO2.1 pins with safety chip, GPIO2.2 pins are electrically connected respectively；The battery has 2
Pin, cathode pin are electrically connected with the VCC of safety chip, and negative pin is electrically connected with the first pin 1 of the switch.When needs make
During with the audio communication mode of the single-chip financial IC card, the switch is pressed, the first pin 1 and second pin 2 turn on,
The battery starts to power to the safety chip, while the level of GPIO1 changes, and safety chip detects GPIO1's
After change, the safety chip enters audio communication mode, and driving GPIO2.1 and GPIO2.2 sends sound wave letter to piezo
Number, the piezo sends sound wave after receiving the acoustic drive signals that the safety chip is sent, and realizes acoustic communication.In this reality
Apply in mode, maximally utilised the GPIO1 pin resources of safety chip.
The operation principle of the single-chip finance audio IC card is：When financial IC card insertion card reader, ATM etc. connects
When touching operating mode machine, the contact port of the safety chip is switched on, and the financial IC card finance enters contact Working mould
Formula；When the financial IC card close to contactless card reader when noncontact mode machine when, RF antennas receive electromagnetic signal, and lead to
Cross electromagnetic signal to produce electricl energy, drive the safety chip to work, while receive and transmission of electromagnetic signals, the financial IC card into
Enter noncontact mode；When the switch of the financial IC card is pressed, battery starts to power to the safety chip, driving
The safety chip work, while the level state of GPIO1 pins changes, the safety chip detects GPIO1 pins
Level change after, the safety chip enters audio work pattern, while is sent by GPIO2.1 pins to the piezo
Acoustic drive signals, after the piezo receives the acoustic drive signals that the safety chip is sent, send sound wave.
The foregoing is merely one embodiment of the utility model, it does not limit the scope of the patent of the present invention,
Every equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is directly or indirectly transported
Used in other relevant technical fields, it is equally included in the patent within the scope of the utility model.
Claims (6)
1. a kind of single-chip finance audio IC card optimizes circuit, it is characterised in that including a safety chip, contacts module, non-
Module and audio-frequency module are contacted, wherein：
The safety chip is used to controlling, analyze and handling data；
The contact module has contact communication function, including 7816 interfaces；
The non-contact modular has the function of contactless communication, including RF antennas；
The audio-frequency module has the function of acoustic communication, including switch, piezo and battery；
Contact module, non-contact modular and the audio-frequency module are coupled in parallel on the safety chip；
The safety chip includes not only using as audio strobe signal path, but also the GPIO1 interfaces used as supplying channels；
The switch has 2 pins, is respectively the first pin and second pin, and first pin connects the negative of the battery
Pole, the second pin connect the GPIO1 pins.
2. single-chip finance audio IC card according to claim 1 optimizes circuit, it is characterised in that the safety chip bag
Include contact port, non-contact port and audio port:
The contact port includes VCC, GND, CLK, RST and IO5 pin, and 5 pins are corresponding with 7816 interface
Connection；
The non-contact port includes two pins of LA and LB, LA the and LB pins connect with the both ends of the RF antennas respectively
Connect；
The audio port includes VCC, GPIO1 pins, GPIO2.1 pins and GPIO2.2 pins, wherein VCC pin and institute
State contact port to share, GPIO1 pins are connected with one end of the switch, and GPIO2.1 distinguishes the buzzing with GPIO2.2 interfaces
Piece both ends connect.
3. single-chip finance audio IC card according to claim 2 optimizes circuit, it is characterised in that one pole of battery with
The safety chip is directly connected to, and another pole is directly connected to switch；The piezo has 2 pins, respectively A and B pins,
The GPIO2.1 of A pins and safety chip mouths are directly connected to, and the GPIO2.2 pins of B pins and safety chip are directly connected to.
4. single-chip finance audio IC card according to claim 1 optimizes circuit, it is characterised in that the switch is series at
Between the battery and safety chip, for control battery whether to safety chip power.
5. single-chip finance audio IC card according to claim 1 optimizes circuit, it is characterised in that the safety chip
GPIO1 pins are input interface, are used as supplying channels.
6. the single-chip finance audio IC card optimization circuit according to claim 2 or claim 3, it is characterised in that institute
Stating piezo has 2 pins, respectively A and B pins, and the GPIO2.1 mouths of A pins and safety chip are directly connected to, for receiving
The acoustic drive signals that the safety chip is sent, B pins can be directly connected to the GPIO2.2 pins of safety chip, also can be with
VCC, GND or GPIO1 are directly connected to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720887118.XU CN207337445U (en) | 2017-07-20 | 2017-07-20 | A kind of single-chip finance audio IC card optimizes circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720887118.XU CN207337445U (en) | 2017-07-20 | 2017-07-20 | A kind of single-chip finance audio IC card optimizes circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207337445U true CN207337445U (en) | 2018-05-08 |
Family
ID=62377248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720887118.XU Expired - Fee Related CN207337445U (en) | 2017-07-20 | 2017-07-20 | A kind of single-chip finance audio IC card optimizes circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207337445U (en) |
-
2017
- 2017-07-20 CN CN201720887118.XU patent/CN207337445U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180508 Termination date: 20200720 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |