一种由DS1216芯片组成的电子钟接口技术

介绍一种用多功能日历时钟芯片ＤＳ１２１６（内带锂电池，可保时１０年，并可带２Ｋ或８Ｋ的ＲＡＭ来存储信息）组成的电子钟接口电路，包括其功能、硬件组成框图、电路原理以及软件的编程设计。重点叙述ＤＳ１２１６芯片的读写原理、读写方式以及读写过程。另外还叙述一下，如何将本系统的电子钟信息送到主系统的数据总线上，即与主机的中断通讯问题。

An Electro Timer Interface Technique with Chip DS1216

The paper gives an introduction to the performance, hardwaer diagram, circuit principle and the program design of the electro timer interface designed with the calendar timer chip DS1216 which contains of a lithium battery to ensure a service life of 10 years and 2k or 8k RAM. Though the stress is put on the read write principle, read write form and read write procedure, author also describes how to transmit the information from the electro timer to the digital bus of the main system, i.e. the interrupt communication with CPU.