IIC 即Inter-Integrated Circuit(集成电路总线），这种总线类型是由飞利浦半导体公司在八十年代初设计出来的一种简单、双向、二线制、同步串行总线，主要是用来连接整体电路(ICS) ，IIC是一种多向控制总线，也就是说多个芯片可以连接到同一总线结构下，同时每个芯片都可以作为实时数据传输的控制源。这种方式简化了信号传输总线接口。(IIC, the Inter-Integrated Circuit, which is a simple, bi-directional, two-wire, synchronous serial bus designed by Philips Semiconductors in the early 1980s to primarily connect the overall circuit (ICS), IIC is a multi-directional control bus, that is to say a number of chips can be connected to the same bus structure, while each chip can be used as real-time data transmission control source. This way simplifies the signal transmission bus interface.)