介绍键盘显示专用器件HD7279A的性能和使用,该器件是常用键盘显示专用器件INTEL8279的升级换代产品,与ZLG7289或ZLG7290具有类似的功能,但外围威廉希尔官方网站
更简单。HD7279A具有串行接口简单,占用单片机资源少,可同时驱动8位共阴式数码管,连接64键键盘等特点。给出与单片机的具体连接威廉希尔官方网站
,控制4位共阴极7段LED的显示,可管理16键键盘和软件流程。
- Abstract:
- The function and characteristics of a special chip HD7279A are introduced for keyboard management and isplay.HD7279A takes place of INTEL8279.This chip is very similar to ZLG7289and ZLG7290,but its external circuit is just simple.It can drive8-bit LEDs and manage64-key keybaord directly with simple serial interface,using much less resources of MCU.An application example is given which interfaces with MCU.It controls4鄄bit LEDS and16key keyboard,including software flows.
声明:本文内容及配图由入驻作者撰写或者入驻合作网站授权转载。文章观点仅代表作者本人,不代表电子发烧友网立场。文章及其配图仅供工程师学习之用,如有内容侵权或者其他违规问题,请联系本站处理。 举报投诉