单片机液晶硬件汉字库设计.pdf

单片机液晶硬件汉字库设计 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