CPLD与LCD接口设计

The Interface Design of CPLD and LCD

采用VHDL语言设计了CPLD和LCD的接口。设计选用Altera公司生产的1款性价比较高的CPLD器件EPM9560,采用320×240点阵图形式液晶显示屏,通过软件仿真验证了程序设计的正确性。采用VHDL语言设计电路能够灵活地修改参数,而且极大地增强了电路设计的通用性和可移植性。

In this article, the interface between CPLD and LCD is designed by using VHDL language. In the design ,the model of CPLD with high cost-effective is EPMg560 which is produced by Altera company. The design is showed by adopting LCD screen with 320 × 240 lattice. The correctness of programming is tested through the simulation of software. The parameter of the circuit designed by VHDL can be modified easily. The versatility and portability of the circuit design are improved greatly.