TMS320F28335与时钟芯片DS1302的串行通信  

Serial Communication of TMS320F28335 and Clock Chip DS1302

作　　者：赵振东[1] 李彦斌[1] 董晓龙[1] 姬占涛 

机构地区：[1]西安工程大学电子信息学院,西安710048

出　　处：《单片机与嵌入式系统应用》2016年第3期50-53,共4页Microcontrollers & Embedded Systems

摘　　要：DS1302是一种串行时钟芯片,在需要实时时钟的嵌入式系统中得到了越来越广泛的应用。本文首先介绍了DS1302的结构和工作原理,并对其读写时序进行了详细的分析,介绍了TMS320F28335通过模拟时序的方法实现了对DS1302的读写操作,详细介绍了其开发过程,并利用示波器观察了其输出的波形,验证了软件和硬件的正确性。The DS1302 is a kind of serial clock chip,which has been widely applied in the embedded system that needs the real time clock. In the paper, the structure and operating principle of the DS1302 are described, and its read and write timing are analyzed. The TMS320F28335 realizes read and write operations of DS1302 by analog timing method, and the development process is introduced. The correctness of the hardware and software is verified through the output waveform of the oscilloscope.

关 键 词：TMS320F28335 DS1302 模拟时序 

分 类 号：TH714.51[机械工程—测试计量技术及仪器]