Design of LCD Display System Based on MCU and HT1621

For the easy and convenient request on the equipment of man-machine conversation interface from MCU controlled intelligent industrial equipment,the LCD module HT1621D and MCU STC89C52 are used to design LCD display system.The hardware configuration and software design process are proposed,the hardware interface and software flow chart are included.The design has advantages of simple and reliable hardware circuit,small occupied I/O port line,stable performance,low power consumption,friendly interface and easy programming.The design obtained good application results.