用8259A扩展MCS-51单片机外部中断源的方法  

Expands the MCS-51 microcontroller exterior interrupt source with 8259A the method

作　　者：侯宝生[1] 

机构地区：[1]陕西理工学院电信工程系,723003

出　　处：《中国科技信息》2008年第14期121-122,共2页China Science and Technology Information

摘　　要：在需要有多个外部中断的应用场合,可用8259A可编程中断控制器接口芯片给MCS-51单片机扩展外部中断源。本文主解决MCS-51单片机系统中,如何产生与8259A相匹配的中断响应信号,8259A的初始化程序及单片机中断响应程序的设计。In needs to have many external interrupt application situations, the available 8259A programmable interrupt controller connection chip expands the exterior interrupt source for the MCS--51 microcontneller. This article host solves in the MCS-51 microcontroller system, how to produce the interrupt response signal which matches with 8259A, the 8259A initialization routine and the microcontroller interrupt response procedure design.

关 键 词：单片机 中断源 可鳊程中断控制器 扩展 

分 类 号：TP368.11[自动化与计算机技术—计算机系统结构]