毕业设计：基于单片机的电子日历硬件设计.docVIP

基于单片机的电子日历硬件设计 电子信息工程专业 张春雪 [摘 要]本主要介绍了基于单片机的电子日历硬件系统设计。此系统具有时间显示功能,系统以AT89S52为核心控制器,通过硬件电路的制作软件程序的编制，设计制作出一个数字时钟系统。系统主要由时钟模块DS130液晶显示模块LCD128X644X4键盘控制模看门狗模块等组成。它由单片机AT89S52芯片和LCD液晶为核心5V直流电源供电，通过数码管能够准确显示时间，能用键盘直接调整时间。其中AT89S52是核心元件同时采用态显示，显满刻度为”、“时”、“分”、“秒”。系统具有简单清晰的操作界面，可随时进行时间调整，设计以硬件为指导思想，充分发挥单片机功能，系统稳定性高，该时钟系统还具有功耗小特点，具有很强的实用性,另外具有校时功能。 单片机；时钟模块；液晶模块Hardware Design of Electronic Calendar Based on Single Chip Electronic Information Engineering Specialty ZHANG Chun-xue Abstract: This paper mainly introduced the hardware of the electronic calendar based on single chip . This system has the time demonstration function, In AT89S52 core controller for the system, the hardware circuit through making and software programming, designed and produced a digital clock system.The system mainly consists of the clock DS1302, LCD moduleLCD128X64, 4X4 keyboard control module,the watchdog module.It takes AT89S52 chip microcontroller and LCD as the core,supplies the 5V dc power, can accurately display time through the digital tube and directly adjust the time through the keyboard. Which is the core element AT89S52 using dynamic display of LCD module, Full scale was the Year, month, Day, week, time, sub, seconds, System is simple and clear interface, which can be time to adjust, hardware designing as the guiding ideology,makes full use of the MCU functions ,the system has strong stability, The clock also has low power consumption characteristics of the system has strong practical, with the timing function. Keywords:Single chip; clock module; lcd module;watchdog 目 录1 引言 1 1.1 课题概述 1 1.2 本文的主要内容 1 2 硬件系统设计方案 2 2.1设计原理 2 2.2 总体框图设计 2 3系统硬件设计 3 3.1 实时时钟模块的设计 3 3.1.1 实时时钟模块的功能 3 3.1.2 DS1302实时时钟电路设计 3 3.2 液晶显示模块的设计 4 3.2.1 液晶显示模块的功能 4 3.2.2 LCD12864电路设计 4 3.3 键盘模块的设计 6 3.3.1 键盘模块的功能 6 3.3.2 矩阵式键盘电路设计 6 3.4 硬件看门狗模块的设计 7 3.4.1看门狗模块的功能 7 3.4.2 X5045硬件看门狗电路设计 8 3.5 电源模块设计 10 3.5.1 电源模块的功能 10 3.5.2电源电路设计 10 4系统仿真调试 12 4.1系统硬件开发环境 12 4.2 Proteus软件 12 4.3软硬件交互仿真 12 结束语 13 参考文献 14 致谢 15 1