基于CPLD的TFT-LCD控制器的设计  

Design of TFT-LCD controller based on CPLD

作　　者：李辉祥[1] 黄光明[1] 

机构地区：[1]华中师范大学物理科学与技术学院,湖北武汉430079

出　　处：《电子设计工程》2011年第23期128-130,136,共4页Electronic Design Engineering

摘　　要：文章介绍了一种基于CPLD的TFT-LCD控制器的设计和实现方法。增加片外SRAM,以提供显示缓存。并使用CPLD实现两大主要功能,一是产生TFT-LCD要求的时序信号,二是协调TFT-LCD和MCU对SRAM的读写访问。相对于常见的TFT-LCD控制器,该设计方法优势明显:结构简单,并且性价比高,驱动小尺寸TFT屏时具有较高应用价值。This paper introduces a design method of CPLD-based TFT-LCD controller. By adding an off-chip SRAM , the display buffer is offered. At the same time CPLD realizes two main functions. One is to generate the timing signal needed by TFT-LCD. The other is to coordinate both the operation of reading SRAM by TFT-LCD and the operation of writing SRAM by MCU. Relative to other common TFT-LCD controller, this method owns some obvious advantages： the structure is very simple, and it＇s cost-effective. So this method has highly practical value when driving small TFT liquid crystal display.

关 键 词：CPLD TFT-LCD VERILOG HDL SRAM 

分 类 号：TN791[电子电信—电路与系统]