基于高速单片机芯片C8051F120和CPLD芯片EPM570T100，设计了一种高精度伺服控制器。该控制器具有LCD显示和通过串口设置显示菜单的功能，可以实时地在液晶屏上显示伺服控制系统的控制信息。给出了该伺服控制系统液晶显示模块的硬件结构设计和软件流程设计。实验结果表明，该液晶显示模块设计具有工作稳定、刷新速度快的特点，能够满足伺服控制系统实时显示的要求。

A servo-controller is designed based on the MCU chip C8051F120 and CPLD chip EPM570T100, the controller has LCD display and menu display through UART setting, and the real-time control information could be displayed on the LCD screen. The hardware structure and software flow design of the controller has been given. The experiment proved that the display module has the advantages of stable display and faster refresh rate, and satisfied the requirement of real-time display of the servo control system.