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东南大学 自动化学院, 江苏 南京 210096
收稿日期:2014-10-16,
修回日期:2015-01-02,
网络出版日期:2014-11-04,
纸质出版日期:2015-06-05
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尤卫卫, 冒建亮, 叶桦. 基于STM32和CPLD的TFT-LCD显示控制器设计[J]. 液晶与显示, 2015,30(3): 444-450
YOU Wei-wei, MAO Jian-liang, YE Hua. Design of TFT-LCD display controller based on STM32 and CPLD[J]. , 2015,30(3): 444-450
尤卫卫, 冒建亮, 叶桦. 基于STM32和CPLD的TFT-LCD显示控制器设计[J]. 液晶与显示, 2015,30(3): 444-450 DOI: 10.3788/YJYXS20153003.0444.
YOU Wei-wei, MAO Jian-liang, YE Hua. Design of TFT-LCD display controller based on STM32 and CPLD[J]. , 2015,30(3): 444-450 DOI: 10.3788/YJYXS20153003.0444.
为了实现对TFT-LCD的控制
本文以STM32和CPLD作为核心控制器
SRAM作为显示缓存
介绍了一种TFT-LCD控制器设计方法.首先
对设计总体架构进行了分析
STM32内部实现了Intel8080总线协议的制定
CPLD内部实现了通讯协议的解析、LCD显示时序的驱动、以及SRAM的读写控制.最后
对LCD显示时序和SRAM的读写进行了仿真
并给出了实现效果图.结果表明
该设计方法能够控制TFT-LCD准确地显示出图文.结构简单
性价比高
具有较高应用价值.
In order to control the TFT-LCD
a design method of TFT-LCD controller is introduced
with the STM32 and the CPLD as the core controller
along with an external SRAM as the display cache. Firstly
the overall architecture of the design is analyzed. The communication protocol between STM32 and CPLD is drawn up inside of STM32. The drive of LCD timing
the parsing of communication protocol and the reading and writing of the SRAM are implemented by the CPLD. At last
the LCD timing and the reading and writing of the SRAM are simulated
and the figure of the actual operation effects are shown. The results indicate that the TFT-LCD can show the picture and word correctly controlled by the proposed design method. The method is of simple structure
high cost performance and higher application value.
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