一种LED数码管显示控制器的VHDL设计

Design of 7-Segment Numeric LED Display Driver by VHDL

本文给出了一种LED数码管显示控制器的设计。该显示控制器具有三线串行接口、多种工作模式 ;可以最多控制 8位 7段LED数码管的显示或者 6 4个单独的发光二极管 ;利用数控脉宽调制电路实现 32级灰度控制。用VHDL描述了整个设计 ,并在Altera公司的EPF10K10LC84- 3器件实现了该数码管显示控制器。

A design of 7-segment numeric LED display driver is proposed. The display driver with 3-wire serial interface and several work modes can drive 8 bits 7-segment numeric LED's display individually(or 64 LEDs). 32 level control of grey scale is provided with a pulse-width modulatr. The structure of the driver is expressed in VHDL,and it is implemented in EPF10K10LC84-3.