目录
一．设计任务和要求 ...........................................................................................................................................2
二．核心芯片功能介绍 .......................................................................................................................................2
1.AT89C51 ....................................................................................................................................................2
1.1 功能特性概括: .............................................................................................................................3
1.2 管脚说明： ................................................................................................................................3
2．DS1302 .....................................................................................................................................................5
2.1 DS1302 引脚功能 ........................................................................................................................5
2.2 DS1302 的控制字 .......................................................................................................................6
2.3 DS1302 的复位引脚 ....................................................................................................................6
2.4 DS1302 的数据输入输出 ............................................................................................................7
2.5 DS1302 的寄存器 ........................................................................................................................7
三．系统方案 .......................................................................................................................................................9
四．理论分析与计算 ...........................................................................................................................................9
五．电路与程序设计 ...........................................................................................................................................8
1.电路设计 ....................................................................................................................................................9
1.1 分电路图及原理说明 .....................................................................................................................9
1.2 主控部分(单片机 MCS-51) ..........................................................................................................9
1.3 计时部分（实时时钟芯片 DS1302） ..........................................................................................9
2．Protues 仿真图 .....................................................................................................................................10
3.程序设计流程图 ......................................................................................................................................11
4.具体程序 ..................................................................................................................................................13
六．结果分析 .....................................................................................................................................................21
七．总结 .............................................................................................................................................................21
八．设计体会与今后的改进意见……………………………………………………………………………..23
参考文献………………………………………………………………………………………………….23
