基于CPLD的LED点阵显示控制器  

The Dot-matrix LED Display Controller Based on CPLD

作　　者：吕常智[1] 范迪[1] 

机构地区：[1]山东科技大学信息与电气工程学院

出　　处：《微计算机信息》2006年第11Z期218-219,233,共3页Control & Automation

基　　金：国家自然科学基金资助项目(60375037)

摘　　要：中小规模的LED点阵显示使用非常广泛,采用单片机控制时,需要扩展大量的外围资源,并且不便于进行扩展、修改和维护。在系统可编程逻辑器件具有丰富得I/O口及内部资源,器件的编程和修改也极为方便。本文中,采用在系统可编程逻辑器件EPM7128作为核心来实现对LED点阵显示的控制,不但简化了外围电路、而且易于修改、扩展和维护。Middle or small scale LED dot-matrix display is used widely. When single-chlp computer is chosen as its controller, there must have to expend more periphery circuits. And once the design is accomplished, it is difficult to be modified and maintained. In other hand, the in-system-programmable devices have plentiful resource and I/O ports internal. It＇ s easy to be programmed and convenient to be modified. In this paper, the isp device EPM7128 is adopted as the core to control the LED dot-matrix display. It simplifies the circuits and makes it easy to expend, modify and maintain the set.

关 键 词：可编程逻辑器件 在系统可编程 LED点阵 

分 类 号：TN949.192[电子电信—信号与信息处理] TN949.16[电子电信—信息与通信工程]