I2C（Inter－Integrated Circuit）总线是由PHILIPS公司开发的两线式串行总线，用于连接微控制器及其外围设备。是微电子通信控制领域广泛采用的一种总线标准。它是同步通信的一种特殊形式，具有接口线少，控制方式简单，器件封装形式小，通信速率较高等优点。C8051F340内嵌此总线。本程序是i2c总线控制的示例驱动程序。-I2C (Inter-Integrated Circuit) bus developed by PHILIPS two-wire serial bus for connection to a microcontroller and its peripherals. Is widely used in the field of microelectronics communication control of a bus standard. It is a special form of synchronous communication with the interface line of small, simple control, the device package is small, the advantages of high speed communication. C8051F340 embed this bus. This program is an example of i2c bus drivers.