基于单片机的日历时钟模块设计  

Design of calendar clock based on MCU

作　　者：汪川[1] 樊泽明[1] 

机构地区：[1]西北工业大学自动化学院,陕西西安710129

出　　处：《电子设计工程》2010年第12期149-151,共3页Electronic Design Engineering

摘　　要：针对目前测控系统中对时间控制的需要,结合实时时钟PS1288的类型与特点,提出一种基于单片机的日历时钟的设计方法。该系统以AT89C52单片机为控制核心,采用实时日历时钟芯片DS12887作为实时日历时钟芯片,为系统提供详细的年、月、日、星期和小时、分等时间信息。通过对DS12887的详细分析,设计其与单片机的硬件接口,阐述该系统的硬件构成和软件设计过程,并给出了相应的硬件原理图和软件流程图。结果表明,DS12887时钟芯片具有低功耗、外围接口简单、精度高、工作稳定可靠等优点,可广泛用于各种需要较高精度的实时时钟场合中。Aiming at the current needs of the time control, combined with real-time clock chip type and characteristics. In this paper, a calendar clock system design was proposed based on MCU. This system used ATMEL Company＇s AT89C52 as the control core and used Dallas Company＇s real-time calendar clock chip DS12887 as the real-time clock chip to provide the system with detailed year, month, day, week, hour, and minute time information. Through the detail analysis of the DS12887, this paper Designed the hardware interface with MCU, described the hardware configuration and software design process, and gave the corresponding hardware and software flow chart diagram. The results show that DS12887 clock chip has the advantages of low power consumption, simple external interface, high accuracy, and reliable perfornance. It can be used in all kinds of high precision and real time clock occasions.

关 键 词：单片机 DS12887 时钟 硬件设计 软件设计 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构]