Design and Implementation of an Multi-Layer LCD Controller

LCD display is widely used in embedded system, but the performance of much LCD controller is not high,and it occupys much of MCU time. So improving performance of LCD controller is helpful to reduce performance requirements of MCU,which decreases cost and increases selection range of MCU. Much of present LCD controller in embedded system take display memory as one space,during dynamic image change,this kind of LCD controller will execute much of bakup and restore. This paper presents a multi-layer LCD controller,which divides display content to several layers.This can decrease more than 30% workload,which make it very suitable in embedded system.