关键字： 液晶显示技术，SED1335芯片
Abstract
The development of Liquid Crystal Display technology has experienced quite a long process, LCD screen can be generally divided into monochrome screen and color screen two kinds. Monochrome LCD screen is also called TN (Twisted Nematic)screen which mostly used in electronic watches, calculators, hand-portable game machines and other equipments, and the low price is its best advantagements. Color LCD screen has the advantage of rich colors and can display static and dynamic color photographs, but the price is higher. It is normally used in protable devices and critical occasions.
Based on LPC2214 ARM chip, this dissertation uses C Language to complete CM320240 LCD Driver Software Design. This module use SED1335 LCD Driver IC for monochrome display. The MCU chip has simple interface and software design. As ARM Assembly Language is abstract and complex nature, by contrast with it, C Language has the characteristics of direct manipulation with the hardware which can greatly simplify the workload. Up to now, the dissertation has completed the function of the software design which includes LCD screen initialization function, orders and data to read and write function, screen data remove and fill function, update function and others. Calling these functions can display LCD screen data and characters. These functions can be used in other platforms.
