基于DS1302实时日历时钟显示系统设计.doc

基于DS1302实时日历时钟显示系统的设计 摘 要 本设计是基于DS1302实时日历时钟显示系统的设计进行的实时日历和时钟显示设计，可以显示年月日时分秒及周信息，具有可调整日期和时间功能。在设计的同时对单片机的理论基础和外围扩展知识进行了全面的准备。 实时日历和时钟显示的设计过程是在硬件与软件方面进行同步设计。硬件部分主要由AT89S52单片机、显示数据的LCD12864组成，所以具有人性化的操作和直观的显示效果。软件方面主要包括时钟程序、键盘程序，显示程序等。本系统以单片机的C语言进行软件设计，为了便于扩展和更改，软件的设计采用模块化结构，使程序设计的逻辑关系更加简洁明了，以便更简单地实现调整时间及日期显示功能。所有程序编写完成后，在keil软件中进行调试，成功运行后，将程序烧进实物进行不断的调试直至完全实现所需的功能。 关键词：AT89S52，DS1302，LCD12864，keil，C语言 The Design of Display System Based on DS1302 Real-time Calendar Clock ABSTRACT This design is based on the ds1302 calendar in real time clock display system design for real - time clock and calendar display design, you can display the Year Month Day hour minute second and the information, with you can adjust the date and time functions. While the design on the theoretical basis of the microcomputer and peripheral extension knowledge in full. Design of Real - time clock and calendar display synchronization process in terms of hardware and software design. The hardware consists mainly of at89s52 SCM, by lcd12864 display the data, so has the effect of human action and intuitive display. Software includes clock, the keyboard programs, such as display program. The systems in C language for software design of the microcomputer, for ease of expansion and changes, the design of the software has a modular structure, making the programming logic more concise in order to more easily achieve power adjust the time and date display. All programming is completed in KEIL software debugging, after a successful run, continue debugging the program is burned into the real until they have achieved the desired function. KEY WORDS: AT89S52，DS1302，LCD12864，KEIL，C language 目　录 前 言 1 第1章 设计目标与方案论证 3 1.1设计目标 3 1.2单片机芯片的选择方案和论证 3 1.3显示模块选择方案和论证 3 1.4时钟芯片的选择方案和论证 4 第2章 硬件设计 5 2.1电路设计框图 5 2.1.1系统硬件概述 5 2.2 AT89S52单片机 6 2.3时钟电路模块 10 2.3.1 DS1302的简介 10 2.3.2 DS1302的应用 17 2.3.3显示模块的设计 18 2.4点阵LCD的显示原理 19 2.4.1 12864点阵型LCD简介 20 2.4.2 12864LCD的指令系统及时序 23 第3章 系统的软件设计 27 3.1程序框