TW477931B - Device capable of flexibly loading firmware into nonvolatile rewritable memory - Google Patents

Abstract

The present invention provides a device capable of flexibly loading firmware into nonvolatile rewritable memory. In accordance with one embodiment of the present invention, under an architecture compatible with the 8051 series of micro-controller, the device can be applied to load firmware into nonvolatile rewritable memory. The device provides a signal switching circuit for allowing the control signal, originally used by the processing circuit to control the nonvolatile rewritable memory and random access memory, to issue an starting switch signal by the processing circuit. After switching, the processing circuit can perform the read and write operation to the nonvolatile rewritable memory via the read and write instructions originally for the random access memory. Under such a function, the processing circuit can download the firmware into the nonvolatile rewritable memory from an external device by a download program and via an interface. In addition, by setting another switch of the device, the download program can be written by the user and stored in the nonvolatile rewritable memory, so as to accomplish the firmware download operation by the device of the present invention.

Description

477931 A7 B7 V. Description of the invention (j This invention is related to a microcontroller that writes data into non-volatile writable memory. Invention U (k) is the development of the integrated circuit industry. Microcontrollers have been widely used in In the dagger system. From the automation of the factory building to the control of automobile engines and various U, microcontrollers have been unknowingly integrated into our lives. Soil: At the beginning, there is an internal part of the microcontroller Memory is used to store the early makeup of the control device ... and, because the functions required by the control system are becoming more and more complex, the internal memory capacity often cannot accommodate huge algorithms. Therefore, microprocessing is possible through external memory. The function of storing her related data. 1 Because of non-volatile writable human memory, such as ㈣ memory, more and more application systems, I hope to use the characteristics of non-volatile writable content to achieve upgrade Clear effect. Physical trend. Li " There is a non-volatile writable memory to store tough self-^^ ^^ When mass-produced, the non-volatile writable memory must be written and burned. Machine-in This will cost Γ. As long as the consumer purchases the product, the customer wants to upgrade the product, and the non-volatile product must be sold out to the manufacturer for upgrading. This is quite inconvenient. / 、 Time-consuming picking of moon beans, 4TMI / 200001TW L _—__ 1 This paper size _ Secret of Towel Guanjiaxian (CNS) A4 (21〇7 ^ 7 ^ 7

------- ί --- ^ — --Λ ^ (Please read the notes on the back before filling this page) ---- ^ ---------___, ______ / / 力 1 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 V. Invention Description (2) In addition, due to the development of Pc and the establishment of standard transfer agreements, the technology for transmitting data through the Internet has also matured, with connections to external devices Functional electronic products will gradually become basic functions. Take the most widely used 8 0 5 i series controller as an example. Its development tools are complete, but it is an old architecture. It was not initially considered to play the role of non-volatile writable human memory, but only Designed for the use of read-only memory: as an external memory. Therefore, if we can properly adjust the architecture of 8051 to propose a compatible microcontroller system, the difficulties mentioned above will be solved. In response to the above question, the present note proposes a flexible device. Not only is it compatible with the most commonly used system architectures now, it is also more flexible = the process of writing to non-volatile writable memory provides a monthb cost-saving and flexible solution. The present invention provides a device, which can load the code required by the device from an external device to a non-volatile writable device connected to the device through an interface. Therefore, when mass-producing electronic products developed using this device, it is not necessary to first write the control code to a non-volatile writable memory. , And after the entire product assembly is completed, you can complete the programmed action through the download function attached to this device. According to a specific embodiment of the present invention, the device controller is compatible, and the device has a processing circuit (compatible with 8051). The processing circuit interprets the program code into a corresponding control signal to control Paper size of the whole department_Zhongguan Jiaxian (CNS> A4 Secret (21〇T ^ 7 ^ F) -------- 1T --------- $ · ( Please read the notes on the back before filling in this page) Printed A7 by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs V. Description of the invention (3 / system + related components >, Rich Circuits, etc.) By providing a signal to switch the ph ~% output to the external non-volatile memory and the control signal of the memory, it can be switched. Therefore, the original t can be used to read and write to the following_write memory. , "Non-volatile ^ · .., In = fe, for reading and writing. Apply this function, you can reach the knife body under a system compatible with 805 1 'D, column. The function of downloading to non-volatile writable memory. &Quot; Through the switch, users can be provided with different application methods of this device. The switch is enabled to start the Ute loading program built in the device to perform the firmware download action. Or the switch is disabled and the user loads the non-volatile writeable t to the stored load in advance. The human program (B㈤t G () de), and the downloading program performs the action of loading the initial body. The advantages and spirit of the present invention can be further obtained by the following detailed description of the invention, that is, the attached drawings. Understand. ΆΑ ^ ΑΑΜ ^ 3_ The first diagram is a system architecture diagram of a specific embodiment of the present invention. The second diagram is a method for implementing the signal switching circuit 3 in the first diagram. The third diagram is the first diagram. The application flow of the switch i 9 in different states in the figure.

4TMI / 200001TW This paper size is applicable to Chinese National Standard (CNS) A4 size mo X 297 mm) -------- Order --------- (Please read the precautions on the back before filling in this (Page) 477931 A7 B7 V. Description of the invention (<) A detailed description of a specific embodiment of the present invention, such as the first form of the code from the outer Qiu β] βfan ^, the mouth is bad, is a kind of Cheng Guangzi The external "set 18" is loaded into the non-volatile writable recording device i, which can be applied as a specific device: system: to control the relevant components of the electronic device to play the function of the electronic device =; 1]. This device 1 is selectively connected to-non-volatile; mentioning itself :::, a random read-write memory 5 two external memories :, with the required program and the source of the data. And __ 介 f 二 资; Set: Communicate with external device 18 to get the required code: 枓. The processing circuit 2 in the structure of this example is compatible with common queued microcontrollers' so that 8051 series microcontrollers can be used = on = And developed programs 'to reduce system development costs. Second, the characteristics of non-volatile writable memory' The signal switching circuit 3 can use the read and write instructions of the original = random read-write memory 5 to set the program code from external I to 8 and load it into non-volatile writable memory 4. Non-volatile writable memory The embodiment of the body 4 is a flash memory. The employee cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs has left a print of π, which is not included in the figure. The i mainly includes a processing circuit 2 and a signal switching circuit 3. The processing circuit 2 interprets the program The code command 'outputs a corresponding control signal to control the operation of the entire electronic device. In addition, the access control of the processing circuit 2 to the external memory 4 or 5' disk 8 in this embodiment 5 ◦ 5 “eye volume series controller It's the same, but it's several percent through three different signal outputs. These three signals are the excitation enable signal 7, the read signal 8 and the write signal 9. However, the difference between the device 1 and the original 8 ◦ 51 series controller is that the processor in the 805 1 series controller has three outputs

4TMI / 200001TW 477931 A7 V. Inventing the First Month (/) ------------- 0 ^ --- (Please read the precautions on the back before filling this page) 疋 Output directly to the outside Memory. The signal processing circuits No. 7, 8, and 9 of the present invention are output to the signal switching circuit 3. Through this signal switching circuit 3, in a state compatible with 8051, it is possible to simply load the non-volatile injectable §memory body by simply using the ingenious mechanism provided by the present invention. Actions. This signal switching circuit 3 mainly provides a function of a selector. When the switching start signal 6 sent from the processing circuit 2 is disabled, the signal enabling circuit 7 is sent to the non-volatile writable memory 4. Therefore, the processing circuit 2 can read the instruction or data to the non-volatile writable memory 4 by activating the enable signal 7. At the same time, the read signal 8 and the write signal 9 are sent to the random read-write memory 5, and the read signal 8 and the write signal 9 are used to read and write the random read-write memory. Among them, the signal line worker 4 a L, and the spring 15 are the address line and the data line, which are shared by the non-volatile writable memory 4 and the random read-write memory for the processing circuit 2 to the external memory 4 , 5 for addressing and data transmission purposes. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. When the processing circuit 2 enables the switching start signal 6, the excitation enabling signal 7 is transferred to the read control signal end of the random read / write memory 5. The read signal 8 and the write signal 9 are output to the read and write control signal terminals of the non-volatile writable memory 5, respectively. Under such a switching operation, the processing circuit 2 can read and write the non-volatile writable memory 4 through the instructions originally used to read and write the random read-write memory 5. action. The following will explain how to use this mechanism to achieve different application types to achieve the code download action. An embodiment of the signal switching circuit 3 is proposed here.

4TMI / 200001TW This paper size applies Chinese National Standard (CNS) A4 specification (210 X 297 mm) 477931 A7 V. Description of the invention (G) Multiplexer combination, as shown in the second figure 'from the processing circuit 2 The switching start signal 6, the excitation enable signal 7, the read signal 8 and the write signal 9 are output to the four multiplexers 20, 21, z2, 2, 3. The switching start signal 6 is used as a selection signal for the four multiplexers. The output of the multiplexer, the first-output signal 0, the second output signal, the third output signal 12 and the fourth output signal 3 are connected to the non-volatile writable memory 4 respectively. The control signal terminal, the write control signal terminal, and the read control signal terminal and the write control signal terminal of the random read / write memory 5. When the switching start signal 6 is disabled, the four multiplexers 2 〇, 2 丄, 2 2, 2 ^ output the signals input from the DIS terminal to the first output signal 丄 〇, the second output L 遽 1 1, The second output signal 12 and the fourth output signal 23. That is, the excitation enable signal 7 sent from the circuit 2 is output to the read control signal terminal of the non-volatile writable memory 4, and the read signal 8 is output to the read control of the write memory 5 The signal terminal 'write signal 9 is output to the write control signal terminal of the random read / write memory 5. In addition, a reference voltage is input to the write control signal terminal of the non-volatile writable memory 4, so that the writing operation of the non-volatile writable memory 4 remains idle. When the switching start signal 6 is enabled, these four multiplexers 2 0 and 2 are printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 2 2 and 2 3 and output the signals input from the EN terminal to the first output signal 〇, the second output signal 11, the third output signal 丄 2 and the fourth output signal 13. That is, the excitation enable signal 7 sent from the processing circuit 2 is output to the read control signal terminal of the random read-write memory 5, and the read signal 8 is output to the read control of the non-volatile writable memory 4. As for the signal terminal, the write shout 9 is output to the write control signal terminal of the non-volatile writeable memory 4. In addition, the write control signal terminal of the random read / write memory 5 is input

4TMI / 200001TW This paper size is applicable to Chinese National Standard (CNS) A4 specification (21 × 297 mm Γ, Α7 V. Inventive note ㊉ (7) A reference voltage keeps the write operation of random read / write memory 5 idle. Through this implementation method shown in the first figure, the signal switching mechanism is more clearly explained. In addition, as shown in the first figure, the device 1 contains an internal memory i 6, an interface 17 and a switch i 9. The internal memory 丄 6 can store codes and data for operating the system and system. The loading program mentioned by Shuming is placed in the internal memory 16. The interface 丄 7 is for connecting with external devices 1 8 The connected input / output interface can be USB, Serial, u⑽ Porter Port, etc., and the external device can be a personal computer, notebook computer or palm-type personal assistant with this interface. Through the interface 17, you can The code or information located outside «is placed. The switch 丄 9 is a-switch. When the system is turned on, it will first check this switch 丄 9. When it is found to be enabled, the processing circuit 2 will be stored in the internal memory. Body code 6 begins to execute Conversely, if the switch 9 is disabled, the processing path 2 will be executed from the non-volatile writeable memory 4 code. Fourth, by setting this [9], the system initial program can be selected. Location: Another report is printed by the Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs. The following figure 3 is used to introduce how to use the cultural structure provided by the present invention above to carry the action of loading code from external device 18 in different situations. State one: #The non-volatile writable human memory 4 does not have any programs stored therein. The data code of the non-volatile writable human memory 4 is carried by the material code stored in the internal memory 16: clothing This% 'must put the switch i 9 in a disabled state. When the system of 1 is initialized', the processing circuit 1 reads from the internal memory 16: moving frame ------------- ------- Order --------- Line (Please read the notes on the back before filling this page)

4TMI / 200001TW This paper standard is applicable to China National Standard (CNS) A4 specifications. _ Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, Du Printing 477931. 5. Invent the “Boot Code” and perform the initial action ( Block period, and then start to load the preloading program stored in internal memory i 6. As shown in the left of the third picture, the half loader / claw is not, the loader will first switch the enable signal 6 to enable ( Block 304). Then, communicate with the external device 丄 8 through the interface i 7 and obtain the code to be loaded into the non-volatile writable memory 4 (block 305). Because the aforementioned signal 6 switching mechanism is activated At this time, you can use the read and write instructions to write the code into the non-volatile writable memory (Fang Soul 307). After the writer's action is completed, the switching start signal 6 will be disabled and restored. The original signal connection state. After the above operations are completed, the non-volatile writable memory 4 stores the new code loaded from the external device. After that, as long as the switch is enabled; L 9 will be automatically switched from The non-volatile writable memory 4 contains Enter the code and execute it. State 2: When you want to use your own designed manned program to perform the action of loading the code from an external device 18. At this time, the user can write the loading program to a The non-volatile writable memory 4 is connected to the device χ. At this time, the switch 9 must be enabled. Its operation will be as shown in the right half of the third figure (Block 3308 ~ 312) and operate as shown in the flow chart. When the system starts, the line reads the code from the non-volatile writable 1 memory 4 and starts execution (Block 3008). This paragraph contains The instruction in the program first copies its own code to the random read / write memory 5. After that, it enables the switching signal 6 (block 31) to enable the processing circuit 2 to read and write the random read / write memory 5. Because of the previous Copy the code, and switch the signals 7, 8, and g of processing circuit 2 at this time. The next instruction captured by processing circuit 2 will be the next instruction of the original program. Copy for RAM 4

4TMI / 200001TW This paper size applies to Chinese National Standard (CNS) A4 specifications (210 -------- Order --------- (Please read the precautions on the back before filling this page) A7 Five Explanation of the invention (1) The user only needs to write the loading program here, and then the device can be transmitted through the external device; 1 side 17 loading the program code into the non-volatile writable memory 4 (block 311 ). After the code is loaded, the last line of instructions will switch the start signal 6 disabled and restore the original signal connection formula of the system. + The above two different applications can be used in the manufacture of electronics with this device At the same time, it also allows consumers who have purchased the electronic product to easily update the firmware. These all show that the present invention can bring the flexibility of the application "= the IV of this book is low. The microprocessor architecture phase valley can then accommodate new technologies such as flash memory and other non-volatile writable memories and play their functions. Although this creation has been disclosed in a preferred embodiment as described above, it is not Create with this book 'anyone familiar with this art, Without departing from the spirit and scope of the present writing, so when attaching the protection defined by the scope of the present Creation rear view when the cover modifications and variations do 'patent, whichever range.

------------ Clothes (Please read the precautions on the back before filling out this page) II ^ --------- ^ 5 11

This paper size applies to China National Standard (CNS) A4 (210 χ 297 public love

Claims (1)

477931 A8 B8 C8 D8 Printed by the Consumers 'Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, and / or applied for patent scope 1 · A device' This device is separately from a writeable (pr〇gra_a) 3le) non-volatile (non- vo 1 at i 1 e) memory and a random access memory (rancjoni access memory) connection, the device includes: a processing circuit, in response to a command, selectively writeable non-volatile memory and the Random read-write memory for reading or writing data; and-a signal switching circuit, which is connected to the scale circuit with a "money line", the signal ring line includes-a switching start signal,-an activation enable signal , —Read signal and a write signal; where, when the switching start signal is enabled, the read signal or the write signal is output to the * writable human miscellaneous memory in order to write the -program code This can be written in non-volatile memory. '2. As for the device described in the first item of the scope of the patent application, the input signal of the signal switching circuit including the eight selectors is the switching start signal, the' to the tiger, the _ fetch signal, the write signal and an idle The signal change start signal is the one of this selector: knife pressure, ± ¾ of the pendulum is a round test signal of 芩 test electricity, and the output signal is _ the first output signal number, and the third round output — ~ K ^ The output signals are L1 and Y1, among which, the first. It is used to control the read action of the non-volatile writable human memory: == _ 发 _ 人 _ write, St ° ^ is used to control the read action of the random read and write memory in turn and should (please first Read the notes on the back and fill out this page} »-4TMI / 200001TW 477931 D8 Patent Application Fan Jij The signal is used to control the write operation of the random read and write memory. 'The signal is selected as a round moon dagger. Μ 山 5 虎, the write signal was selected as the horse-wheel riding number, which stimulated MH to say that the "fine material to three output signal phase signal was selected as the fourth round out signal. 4 The dream described in item 2 is set to "", when the switching start signal is disabled, it is selected as the second output stage, / 遽, the interposition signal is selected as the pass number. ~ The buy signal is selected as the first The three-output write ^ tiger is selected as the fourth output signal. 5 · As described in item (1) of the application scope, one person and one person can be obtained from the external device through the interface. Documents 6 · ^ Applying Fan Liuliu to set up, including-one finger stored in the inner axis 7. The device as described in item 6 of the scope of application, includes-a switch, when the switch is disabled, the device reads from the instruction set-the first-start the program and open the Intellectual Property Bureau of the Ministry of Economic Affairs The employee consumer cooperative prints 2 and executes 'when the switch is enabled', the device reads in from the non-volatile writable recorder-the second startup program and starts execution. 8. As stated in item 7 of the scope of application In the device described, the instruction set includes a first downloading program, which is stored in the built-in memory. When the switch is disabled, the second startup program may call the first downloading program and the first downloading program. The program reads the code from the external device through the interface—the code to be loaded, and loads the code ^ _J ^^ 00001TW x 297 mm.), "The scale is applicable + S shout fresh (CNS) A 丨 Specifications (210 The scope of the application for the patent of 6 bows is written by the consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs in the non-volatile writable person's memory. The first program includes the following steps: (1) Enable the switching start signal; ⑵ Write the code into the non-volatile writable memory; (3) The switching start signal is disabled. 9 · = # The range described in item 7 of the range, the non-volatile writable human memory contains-a second download program, when the cut_off is enabled, the second startup program is about ^ Π first Download the spear jade style, the second download program reads the private code loaded by the slave through the interface and writes the code to be loaded into the non-volatile writable person's memory, the second remaining The formula includes the following steps: () will. $ 第 — 下 余 式 code, the writer should rely on the read-write memory to become a third download program; (2) The switch start signal is enabled; ⑶ After the switch is enabled, the «three download program is then executed Read the code to be loaded from the external device through the interface and write the non-volatile writable memory; (4) The switching start signal is disabled. 10. The device described in item 7 of the scope of application, Off. 4TMI / 2000Q1TW Guan Jiaxian (CNS) A4 Specification (21〇 The switch includes a manual ON x 297 ^ 7 -------------------- order ---- ----- Line-(Please read the precautions on the back before filling this page) 477931 A8 R8 C8 D8 VI. Application for patent scope 1 1 · As for the device described in item 7 of the scope of application, the switch includes a Programmable switch. 12 · The device described in the first application scope, the non-volatile writable memory includes flash memory. 13 · The device described in the fifth application scope, the interface includes a universal Universal serial bus 〇14 · The device described in item 5 of the scope of application, the interface includes a parallel printer port 〇15 · The device described in item 5 of the scope of application, the external device Including a personal computer 〇16 · The device described in item 5 of the scope of application, the external device includes a notebook type notebook ° 17 · The device described in item 5 of the scope of application, the external device Includes Personal Palm Assistant (PDA). ------- —Order --------- Line · (Please read the back first Please fill in this page again.) Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, Consumer Co-operative Society 4TMI 200001TW 13 This paper size applies to China National Standard (CNS) A 丨 Specifications (210 X 297 mm)