Operating method for configured interface of microcontroller

Abstract

The invention relates to an operation method of a configuration interface of a microcontroller, comprising the follow steps: when a high level is input into a testing port, a serial clock and a serial data are input through an I / O port, the serial data is compared with an operation method code which is internally set, a corresponding operation method can be accessed through the comparison of the effect. The invention also comprises a function testing operation method, a DC parameter testing operation method, a digit / analog conversion testing operation method, a program storage testing operation method, a parallel programming mode operation method and a serial programming mode operation method. The configuration interface operation method of the invention can be scalable, and can access a plurality of testing operation methods and working methods, the access of a chip to different testing or working operation methods becomes more easy.

Description

technical field

[0001] The invention relates to the field of microcontrollers, in particular to a configuration interface operation method. Background technique

[0002] Since the 1980s, with the widespread application of computer embedded systems, microcontrollers (MCU, microcontroller unit) have developed rapidly. The early single-chip microcomputer is a single-chip integrated circuit device of the computer designed according to the requirements of embedded application technology, that is, all the characteristic devices of the electronic computer are integrated on one chip, so it is vividly called a single-chip microcomputer. Subsequently, in order to meet the requirements of embedded applications, single-chip microcomputers have continuously enhanced their control functions and peripheral interface functions, making the research and development of single-chip microcomputers in these two aspects more important.

[0003] In recent years, the program memory structure of mic...

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