Microcontroller and code programming method for microcontroller

Abstract

The invention discloses a microcontroller and a code programming method for the microcontroller. The microcontroller comprises a communication interface, a first program storage unit, a second program storage unit and a program storage control unit, wherein the communication interface is used for being communicated with an external processing unit, the first program storage unit is used for storing run code files, the second program storage unit is used for storing code files as same as the run code files, the program storage control unit is used for controlling the communication interface to be connected with the first program storage unit or the second program storage unit. The microcontroller has the advantages that when the first program storage unit is damaged, automatic switching to the second program storage unit is achieved, so that the reject ratio of MCU chips is decreased; through programming once, the standby second program storage unit is formed, reprogramming is not needed when the first program storage unit is damaged, and the number of programming times is decreased.

Description

technical field [0001] The invention relates to the technical field of the Internet, in particular to a microcontroller and a code programming method for the microcontroller. Background technique [0002] Microcontroller Unit (MCU), also known as single-chip microcomputer or single-chip microcomputer, is to appropriately reduce the frequency and specifications of the central processing unit, and integrate memory, counter, USB, A / D conversion, UART, PLC, DMA Peripheral interfaces, and even LCD drive circuits are integrated on a single chip to form a chip-level computer, which can be used for different combination controls for different applications. Such as mobile phones, PC peripherals, remote controls, automotive electronics, industrial stepping motors, control of robotic arms, etc., can all be seen in the MCU. MCUs include built-in program memory for storing programs executed by the MCU. The program memory can be a read-only memory or a flash memory. At present, flash me...

AI Technical Summary

Problems solved by technology

The program memory can be a read-only memory or a flash memory. At present, flash memory is widely used. The existing programming software burns the code to a location of the flash during programming. It is easy to be damaged in a harsh environment, and the yield rate of the built-in flash memory is an important factor that directly affects the yield rate of the MCU

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