SPI总线及其在单片机系统中的应用  

SPI Bus and its Application in Single Chip Microcomputer System

作　　者：蒋伟[1] 文昱[2] 

机构地区：[1]江西农业大学计算机与信息工程学院,江西南昌330045 [2]南昌大学,江西南昌330031

出　　处：《科技广场》2008年第10期201-202,共2页Science Mosaic

摘　　要：目前,MCS-51系列单片机的应用很广,但它们自身没有SPI串行总线接口,这就限制了带SPI总线接口的器件在这些系统中的应用。本文详细介绍了SPI总线的性能,并运用软件模拟SPI总线时序的方法,实现MCS-51系列单片机的SPI通信。At present,single chip microcomputer of MCSSI series were applied widely,but they have no interface for SPI bus,so the device for SPI bus interface in these system was limited.This paper gives a deailed introduction about the feature of SPI bus,and shows the solution for the communication between MCS-51 and other SPI devices by using software to simulate the SPI bus time sequence.

关 键 词：SPI总线 单片机 MCS-51 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]