单片机液晶硬件汉字库设计(附程序代码,元件清单)

单片机液晶硬件汉字库设计(附程序代码,元件清单)(论文10000字)
摘  要
近年来，随着电子行业的发展，单片机的应用越来越广泛，基于单片机的电子电路的设计也越来越多。所以，单片机在电子教学中越来越普遍。
本设计介绍的是以ATMEGA8单片机为核心的液晶显示屏控制系统。该设计详细阐述了其工作原理、基本功能框图、主要设计方法及工作流程。本设计提出了一种能实时控制显示内容的基于单片机的液晶显示屏控制系统设计方案，给出了该单片机的硬件电路和软件程序，最终显示出汉字的结果。具体方法是首先设计并焊接出一个AVR单片机开发板，基于此开发板设计出LCD模块显示电路。之后，编写LCD模块初始化程序和显示程序。最后下载程序到单片机，LCD显示出汉字。

关键词：    Atmega8   控制   LCD12864   显示

 Title    The control circuit design of the dot-matrix liquid crystal  
              display controlled by the microprocessor                                       
Abstract
In recent years, with the development of the electronics industry, the application of the Microcontroller Unit is becoming more and more widely, also, there is more and more electronic circuit design based on the Microcontroller Unit. Therefore, the Microcontroller Unit using in the electronic teaching is becoming more common.
This design introduces the liquid crystal display control system based on the ATMEGA8 microcontroller. This design elaborated on its working principle, the basic functional block diagram, main design methods and working process. This design puts forward to a design scheme based on the Microcontroller Unit, which can control the showing content of the LCD screen controlling system at the real time. The specific method is that, firstly we should design and weld into an AVR Microcontroller development board and then design a LCD module display circuit based on the development board. After that, write the LCD module initialization program and displaying program. At last, download the program to the MCU, and the LCD will show the Chinese characters.

Keywords  ATMEGA8  control  LCD12864  displaying
 

目次
摘  要    I
Abstract    II
目次    III
1概述    1
1.1课题背景    1
1.2设计要求    1
1.3 LCD简介及发展    1
1.4 AVR单片机    2
2方案论证    2
2.1方案一    2
2.2方案二    3
2.3方案三    3
3主要模块简介    3
3.1 ATMEGA8简介    3
3.2 LCD12864模块简介    4
3.2.1 KXM12864主要技术参数和性能    4
3.2.2 KXM12864外形尺寸图    5
3.2.3 KXM12864液晶显示指令系统    6
3.2.4 12864液晶显示动态指标及术语    7
4硬件设计    9
4.1设计流程图及设计思路    9
4.2各模块电路设计    10
4.2.1电源电路    10
4.2.2 LCD12864模块控制电路    11
4.2.3 RS232电平转换电路    12
4.2.4 时钟电路    13
4.3硬件焊接与调试    14
4.4方案扩展    14
5软件设计    16
5.1 LCD12864模块初始化流程    16
    16
5.2部分程序代码    17
5.2.1软件延时    17
5.2.2 端口输出函数    18
5.2.3 写数据函数    18
5.2.4 写指令函数    19
5.2.5 初始化函数    20
5.2.6 显示函数    20
5.3程序调试中的注意问题    23
6实物与实测效果展示    27
6.1实物展示    27
6.2实测效果展示    28
结论    29
感言    30
致谢    31
参考文献    32
附录A    33
硬件原理图（基于protel99se）    33
附录B    34
程序代码    34
附录C    40
元器件规格清单    40