SPI串行总线在单片机8031应用系统中的设计与实现

The Design and Implementation of SPI Serial Bus in Single Chip Microcomp uter 8031 Applied System

目前 ,MCS5 1系列 ,ATMEL89系列等单片机应用很广 ,但他们没有 SPI串行总线接口 ,限制了在这些系统中使用具有 SPI总线接口器件的应用。本文将介绍 SPI串行总线的性能 ,并以串行 E2 PROM为例 ,给出了在 80 31上利用I/ O线实现 SPI串行总线的方法和软件设计。

At present,single chip microcomputer of MCS51,ATMEL89 series were applied widely ,but they have no interface for SPI bus,the device for SPI bus interface in thes e system was limited.This paper introduces the feature for SPI serial bus and ta king the serial E 2PROM example,methodology and software design of achieve SPI serial bus to utilize I/O of 8031 were given.