【摘要】 MCS51系列、ATMEL89系列、60HC05系列等单片机得到了广泛的应用,但它们均没有I2C总线接口,因此限制了在这些系统中使用具有I2C总线接口器件的应用。本文介绍I2C总线虚拟技术的原理、性能,并结合实例给出在8051系统上利用I／O线实现I2C串行总线的方法和软件设计。此方法简便易行,并具有一定的通用性,且易于嵌入移植。更多还原

【Abstract】 Micro controller of MCS51,ATMEL89,60HC05 series were widely applied,but they have no interface of I2C bus, the application of device for I2C bus interface in these systems were limited. We introduce the principle , performance of the virtual technology of I2C bus at first here, then combine the instance and provide the method to make use of I/O line to realize the serial bus of I2C and software design in 8051 systems. This method is simple and easy to do, have certain common ability, and apt to imbed and transplant.更多还原