I^2C总线器件扩展单片机的接口

I^2C Bus Component Expand Interface of Single Chip Microcomputer

分析I2 C总线的优点 ,时序和数据传输格式 ,利用单片机的I/ 0口线模拟I2 C总线传输信息 ,以此来扩展单片机的I/ 0接口 .

The advantage and time order and digital transmitting format of I 2C bus are analyzed.The I/0 line of single chip Microcomputer is used to analogy the I 2C bus transmitting information so as to expand the I/0 interface of single chip Microcomputer.