模拟I^2C总线实现AVR与MCS-51单片机通讯  

Simulating the I^2C to Realize AVR and the MCS-51 Communication

作　　者：甘辉[1] 

机构地区：[1]宜春学院物理科学与工程技术学院,江西宜春336000

出　　处：《宜春学院学报》2008年第4期54-56,共3页Journal of Yichun University

摘　　要：I2C总线接口具有连接简单、使用方便、数据传递可靠等优点,在工业实时控制系统中得到了广泛应用。I2C总线占用的资源非常小,减少了电路板的空间和芯片管脚的数量,降低了互连成本。目前在市场上广泛使用的MCS-51系列单片机无I2C接口,这与具备I2C总线接口的高速AVR单片机通讯时造成困难,如果用并行I/O口通讯则占用资源较多,因此文章阐述在MCS-51上模拟I2C总线的工作时序与AVR通讯的方法,并给出参考程序。The I^2C has the connection simply, the easy tooperate, This technology obtained the widespread application in the industry real -timeeontrol system, The I^2C＇s resources was extremely small, reduced theelectrie circuit board space and the chip base pin quantiry, reduced the cost. At present, in the market, the widespread application MCS -51 seriesmonolithie integrated circuit does not have the I^2C connection, When communication of MCS -51 and I^2C with high speed AVR monolithieintegrated circuit, causes the difficulty, If using the parallel I/O communication, This may waste the resources. Therefore the article propose： Simulating the I^2C to Realize AVR and the MCS- 51 Communication and produces procedure.

关 键 词：I^2C MCS-51 AVR 总线 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构] TP336[自动化与计算机技术—计算机科学与技术]