介绍了一种基于ATmega1280 AVR单片机并包含液晶显示与键盘两个模块的控制面板的设计。控制面板采用由RA8835控制的LG3202405液晶模块作为显示设备, 6×4矩阵式键盘作为输入设备。通过EPM7128与单片机的硬件接口设计, 实现了液晶显示模块与键盘对单片机I/O口资源的共享。

This paper summarized the design process of a control panel, which is based on ATmega1280 AVR chip microcomputer and constitutive of a LCD module and a keyboard module. In this design, a LG3202405 LCD module controlled by RA8835 was used as the display device, and a 6×4 matrix was used as the input device. According to the design of hardware connection between EPM7128 and the chip microcomputer, the LCD module and the keyboard module shared the I/O port resources of the chip microcomputer.