MAX7219在带清零与置数功能的增量式光电码盘中的应用

MAX7219 Used in Incremental Optical-electrical Coder with"SET"and"CLEAR"

介绍了用高性能八位串行接口 LED 驱动芯片 MAX7219,实现带置数与清零功能的增量式光电码盘静态显示。机上系统采用AT89C51实现码盘清零与置数功能,软件设计实现分、秒的六十进制压缩 BCD 码加、减运算;机下系统采用 AT89C2051控制MAX7219串行驱动7位共阴极数码管,显示从串行接口接收到的码盘位置检测角度值。

The angle of incremental optical-electrical coder which is displayed through MAX7219 is introduced. Incremental optical-electrical coder that work in SET＇s or CLEAR＇s pattern based on adding or subtraction of sexagesimal compressible BCD code. This system which realized by singlechip enlarges the design of incremental optical-electrical coder＇s working.