文档介绍：摘要
本文借助电路仿真软件Protues对基于AT89S51单片机的电子万年历的设计方法及仿真进行了全面的阐述。该电子万年历在硬件方面主要采用AT89C51单片机作为主控核心,由DS1302时钟芯片提供时钟、1602LCM点阵液晶显示屏显示。AT89C51单片机是由Atmel公司推出的,功耗小,电压可选用4~6V电压供电;DS1302时钟芯片是美国DALLAS公司推出的具有涓细电流充电功能的低功耗实时时钟芯片,它可以对年、月、日、星期、时、分、秒进行计时,还具有闰年补偿等多种功能,而且DS1302的使用寿命长,误差小;数字显示是采用的LED液晶显示屏来显示,可以同时显示年、月、日、星期、时、分、秒等信息。此外,该电子万年历还具有时间校准等功能。在软件方面,主要包括日历程序、时间调整程序,显示程序等。所有程序编写完成后,在Keil软件中进行调试,确定没有问题后,在Proteus软件中嵌入单片机内进行仿真。
论文主要研究了液晶显示器LCM及时钟芯片DS1302,温度传感器DS18B20与单片机之间的硬件互联及通信,对数种硬件连接方案进行了详尽的比较,在软件方面对日历算法也进行了论述。
研究结果表明,由于万年历的应用相当普遍,所以其设计的核心在于硬件成本的节约软件算法的优化,力求做到物美价廉,才能拥有更广阔的市场前景。
关键词:单片机;DS1302;DS18B20;LCM1602
Abstract
This paper mainly discuss the design and simulation of electronic calender based on AT89S51 with the help of the hardware side, the electronic calendar using AT89C51 microcontroller as the main control center, clock provided by the DS1302 clock chip , 1602LED dot matrix LCD Corporation AT89C51 microcontroller is producted by Atmel Corporation, low power consumption, voltage can be selected 4V~ 6V voltage power supply; DS1302 clock chip, launched in the United States with DALLAS small current charging function real time clock chip, low power consumption, it can be years , month, date, day, hour, minute, seconds time, also has a leap pensation and other functions, and DS1302 long life, small error; LED digital display is used in LCD displays that can display in , month, day, week, hours, minutes, seconds and other addition, the electronic calendar is also a time calibration functions. In terms of software, including calendar program, time to adjust procedures, display procedures. All programming plete, the Keil software debugging, make sure there is no problem, in the Proteus software embedded within the simulated MCU.
This article focus on liquid crystal screen LCM1602 and clock chip DS1302,temperature sensor DS18B20 which connected municated with solutions will pared with each software side,c