摘要
介绍了LED数码管及键盘管理器ZLG7289A的原理与应用。该芯片具有SPI串行接口 ,可同时驱动8位共阴式数码管 (或64只独立LED),还可连接多达64键的键盘矩阵 ,单块芯片即可完成LED显示、键盘接口等全部功能。文章给出了ZLG7289A的特点、引脚功能、指令说明和经典电路 ,并以单片机AT89C51为例 ,给出了其接口电路及相应源程序。
The principle and application of LED and keyboard manager chip ZLG8279A are introduced.The chip has SPI serial interface,It can drive eight negative electrode lights (or 64 independent LED) at the same time and link keyboard that the reaches 64 key matrix. The single chip can accomplish LED display and keyboard interface. The ZLG8279A characteristic,instruction ,its PIN and typical application circuit ARE PROVIDED are provided.The interface circuit and source program are given based on AT89C51.
出处
《国外电子元器件》
2004年第4期62-66,共5页
International Electronic Elements
