FPGA／CPLD可编程逻辑器件的在系统配置方法

讨论了基于SRAM技术的CPLD／FPCA可编程逻辑器件的编程方法，并以ALTERA公司FLEX10系列器件为例，提出了一种利用微处理器对可编程逻辑器件进行在系统多方案配置的实用方法。该方法成本低廉、简单易行，能在系统复位或上电时自动对器件编程，不仅有效的解决了基于SRAM的CPLD／FPGA器件掉电易失性的问题，而且使单一芯片可以具有多种逻辑功能，实现了该类器件逻辑功能的在系统多方案的灵活配置。

CPLD/FPGA Programmable Logic Devices' In System Reconfiguration Method

This article has discussed the methods of configuring the CPLD/FPGA devices based on SRAM, and choose the microprocessor to configure the FLEX10k devices of ALTERA. From the article ,we can see that this low cost and easy done method can enable the system to configure the CPLD/FPGA devices automatically as soon as the system is re set or power is re added to it. It has solved the problem that CPLD/FPGA devices based SRAM may lose it's logic function when dropped out of power, and it enables the single chip to have several functions.