摘要
I2C总线是Philips公司推出的新型单片机系统。它采用串行总线,主控器与外围器件仅靠两条线进行信息传输,一条称为时钟线(SCL),另一条位数据线(SDA)。I2C总线单片机系统较通用单片机系统电路简单。由普通CPU芯片同I2C专用器件组成的系统为模拟I2C系统,它性能稳定,价格较低,目前已得到广泛应用.本文介绍了具有I2C接口的A/D芯片PCF8591的引脚图及应用电路,并在暖水锅炉温度记录仪中得到应用。
I2C bus system is a new kind of single-chip system, which developed by Philips. It uses serial bus, i.e. there are only two lines to realize the communication between the main controller and the peripheral equipment, one is clock line (SCL), and the other is data line (SDL). Therefore, the circuit in I2C bus single-chip system is simpler than that in general one. Analog I2C system composed of common CPU chip and I2C component has stable performance, lower price and has been widely used now. In this paper, we introduce the pin figure and application circuit of A/D chip PCF8591 which has I2C interface. It has been used in hot water boiler temperature recorder.
出处
《微计算机信息》
北大核心
2005年第06Z期150-151,共2页
Control & Automation
关键词
I^2C总线
A/D转换
器件地址
控制字节
I^2C bus
A/D conversion
(electronic) device address
controllable byte
