摘要：本次设计的主要内容为基于单片机的彩屏驱动，在本次设计中主要设计内容为2。1寸液晶屏幕的驱动电路设计，基于STC89C52单片机的驱动程序，系统的电源电路，外部接口电路和单片机最小电路以及IL9I320TFT驱动芯片的应用，并通过外部按键控制彩屏的显示功能。主要应用的技术方式为字符的取模以及图片的存储与读取，最终完成图片的显示。主要遇到的问题：字模的提取与图片显示出现乱码、按键设置出错等，经过升级字模提取软件并且设定一定的参数、图片重新筛选屏幕相应位置、重新选取按键设置之后得以解决。经过实际调试运行，本文设计的基于单片机的彩屏驱动能够有效驱动TFT液晶屏，并控制屏幕像素显示以及通过按键切换不同显示信息，实现了单片机与PC机间的数据传输及存储，并能利用软件方便的进行显示内容的多样变化，能够广泛的应用于生活中，所以本设计具有很强的现实应用性。81446

毕业论文关键字：彩屏驱动；单片机接口电路；STC89C52；彩屏控制芯片；ICI9320

Digital display system design

Abstract：The main content of this design is based on the single-chip color screen drive, in this design, the main design content for the 2。4-inch LCD screen drive circuit design and STC89C52 microcontroller based on the driver, and the system power circuit and external interface circuit, The minimum circuit and IL9I320TFT driver chip applications, and through the external button to control the color display function, the main application of the technology for the character mode and the picture of the storage and reading, the final completion of the picture display。 The main problems encountered: font extraction and picture display garbled, key settings error, etc。, after upgrading the font extraction software and set a certain parameter, the picture re-screen the appropriate location of the screen, re-select the button set to be resolved。 After the actual debugging operation, this paper designed based on the single-chip color drive can effectively drive the TFT LCD screen, and control the screen pixel display and through the button to switch the different display information to achieve the microcontroller and PC data transmission and storage, and can use software Easy to display the contents of the perse changes, can be widely used in life, so the design has a strong practical application。

KeyWords：Color screen drive; MCU interface circuit; STC89C52; color control chip; ICI9320

目录

摘要 II

Abstract II

1 绪论 1

1。1 课题研究背景 1

1。2 显示器研究及发展现状 1

1。3 研究内容及预期目标 2

1。4 本章小结 2

2 系统方案论证 3

2。1 控制器种类及单片机选型 3

2。2 显示模块的种类选型 5

2。3 显示模块字库的选择 6

2。4 系统供电的选择 7

2。5 本章小结 8

3 系统硬件电路设计 9

3。1 单片机最小系统电路设计 9

3。1。1 复位电路 9