CPLD在LED广告屏中的应用研究  

The Application Study of CPLD in the LED Displaying

作　　者：赵明富[1] 田泽正[1] 王超[1] 肖继银[1] 

机构地区：[1]河南科技学院机电学院,河南新乡453003

出　　处：《河南科技学院学报》2008年第4期65-70,共6页Journal of Henan Institute of Science and Technology(Natural Science Edition)

基　　金：河南省教育厅科技攻关项目(2007480001)

摘　　要：介绍单片机和CPLD在公交车内LED广告屏中的应用设计。单片机将点阵码写入双口RAM后可处理其它事务,只要向CPLD发出扫描触发指令,扫描工作将由CPLD硬件负责,实现了由单片机软件到CPLD硬件的转变,大大提高了扫描频率和CPU的处理能力。This paper introduces the design of the application of Single-chip computer and CPLD in LED display screen of transit vehicle information.The Single-chip computer can process other things afte it writ-es the lattice code into double ports and common RAM.The hardware of CPLD will accomplish scanning if the triggering command is sent to CPLD.The change from the software of Single-chip com puter to the hard-ware of CPLD is realized.The scanning frequency and the processing ability of CPU are improved.

关 键 词：复杂可编程逻辑电路 单片机 硬件描述语言 LED点阵 双口RAM 

分 类 号：TN873[电子电信—信息与通信工程]