基于ptotues keil(i2c)串行通信系统仿真.doc

基于ptotues keil(I2C)串行通信系统仿真

目 录

1. 引言  1
2. I2C总线原理  1
2.1 数据位的传送  2
2.2 启始和停止状态  3
2.3 传输数据  3
2.4 应答  3
2.5 数据传输格式  4
2.6 I2C总线的寻址  5
2.7单片机主从系统I2C总线模拟程序  6
3 I2C总线应用  6
3.1 I2C总线扩展E2PROM  6
3.2 I2C总线扩展I/O口  8
3.3 I2C总线A/D及D/A转换  9
3.3.1 PCF8591芯片介绍  9
3.3.2器件总地址  9
3.3.3  D/A转换与A/D转换  10
程序附录  14
参考文献  23
致谢  24
 
摘  要：本文主要是基于I2C技术，应用protues keil软件，设计虚拟I2C总线串行通信外围扩展。介绍了I2C串行通信的基本原理，虚拟I2C总线技术，I2C总线和E2PROM，ADC/DAC，I/O口等外围器件接线方法，时序，及其寻址方法。
     
关键词： I2C总线技术；串行通信；I2C总线虚拟技术；串行外围扩展

Serial (I2C) communication system simulation Based ptotues keil

 
Abstract:  This article is based on I2C technology, application protues keil software, designing virtual I2C bus serial communications peripherals expansion. It has Introduced the basic principles of I2C serial communication, virtual I2C bus, I2C bus and E2PROM, ADC / DAC, I / O ports and other peripheral device connection method, timing, and addressing methods.

Key Words: I2C bus technology; serial communication; I2C bus virtual technology; serial peripheral expansion