基于CPLD的单片机接口设计  

Design of Single Chip Computer Interface Based on CPLD

作　　者：田开坤[1] 徐海霞[1] 

机构地区：[1]湖北师范学院电工电子实验教学中心,湖北黄石435002

出　　处：《现代电子技术》2008年第2期34-36,共3页Modern Electronics Technique

摘　　要：现在分离元件在很多电路设计中还在普遍使用,完成逻辑转换、地址译码、数据锁存等任务,在PLD技术相当成熟的今天,采用PLD代替传统分离元器件,将会极大地减小PCB尺寸,节约成本。对CPLD器件和开发工具进行研究,提出一种单片机与CPLD总线接口方案。运用该方案设计单片机系统实现A/D,D/A,LCD等多种外设的接口,电路简洁,并给出CPLD电路设计方案,总体电路原理图和关键程序代码。Many circuit design still use separative components in nowadays, completes the logic to transform, the address decoding, the data lock saves and so on. Today the PLD technology has become more and more mature, using the PLD technology instead of tradational separative components not only reduce the PCB size, but also save the cost. This paper researches CPLD devices and the reference tools,proposes a bus interface between single chip computer and CPLD. The single chip computer system contain A/D,D/A, LCD and something else,adopting this way,making the circuit more easy and clear. This paper also gives CPLD circuit design scheme,circuit theory graphic and the main program code.

关 键 词：CPLD 分离元件 PLD EDA 

分 类 号：TP331.1[自动化与计算机技术—计算机系统结构]