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Chip iap data update control method and system

A technology of data update and control method, applied in electrical digital data processing, hardware monitoring, instruments, etc., can solve problems such as system software update failure, and achieve the effect of reducing cost and circuit area

Active Publication Date: 2020-02-21
SHANGHAI EASTSOFT MICROELECTRONICS
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] The present invention solves the problem of how to avoid system software update failure caused by system internal voltage instability

Method used

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  • Chip iap data update control method and system
  • Chip iap data update control method and system
  • Chip iap data update control method and system

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Embodiment Construction

[0026] In the application of programmable (In-Application Programming, IAP) programming technology, it means that while the application program in the microcontroller (Micro Controller Unit, MCU) keeps running, from any communication port (such as UART, GM Serial bus, Bluetooth, etc.) technology to receive program update data and reprogram the memory. The system software can be updated remotely through IAP programming technology, without the need for technical engineers to go to the site to update, thereby saving system update costs, and can update the system software of some equipment in harsh environments.

[0027] However, in some application scenarios, when using the IAP programming technology to update the system software, if the internal voltage of the system is unstable, it may cause the system software update to fail, resulting in a system crash.

[0028]In the embodiment of the present invention, when the first LVD interrupt signal is received, it is determined that t...

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Abstract

The invention provides a chip IAP data updating control method and a chip IAP data updating control system. The chip IAP data updating control method comprises the steps of determining whether a firsts LVD interruption signal is received, wherein the first LVD interruption signal is generated on the condition that internal voltage of the chip detected by an LVD circuit of the chip is lower than a first preset voltage value; and on the condition that the first LVD interruption signal is received, prohibiting IAP data updating. The chip IAP data updating control method and the chip IAP data updating control system can prevent a problem of system software updating failure caused by instable internal voltage of the system.

Description

technical field [0001] The invention relates to the chip field, in particular to a chip IAP data update control method and system. Background technique [0002] In practical applications, a programmable memory is built in a reprogrammable chip, and the programmable memory is usually a Flash memory. When programming the chip, place the chip on the chip base of the dedicated programmer, and use the dedicated programmer to burn the program to the Flash memory inside the chip. However, the disadvantage of the above programming method is that once the programmed chip is soldered to the system board, the chip cannot be programmed again later, or a base for a pluggable chip can be specially provided. [0003] In order to facilitate the user to update the program inside the chip, an in-system programming (In-System Programming, ISP) technology has emerged, using a two-line serial port or a single-line serial port to program the chip. However, ISP technology still requires technica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F8/65G06F11/30
CPCG06F8/65G06F11/3058
Inventor 许克龙钟雄光
Owner SHANGHAI EASTSOFT MICROELECTRONICS
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