xukaiming 发表于 2009-10-19 11:24:37

有谁知道GAL的烧录时序?

如题

xukaiming 发表于 2009-11-4 00:09:39

好像Google也搜索不到，难道只有编程器厂家知道吗？

pulan 发表于 2009-11-4 07:39:22

只用编程器

sailor0908 发表于 2009-11-4 09:02:27

Initialize

Set all pins (except GND, VCC, EDIT and SDOUT of course) of the GAL to L, except STB- which should stay H.

Read (16V8/20V8) at 12 volt on EDIT:

Set P/V- to L, set up the desired pattern on RA0..RA5, bring STB- for a short time (1-10us) to L and again up to H, read bit from SDOUT, bring SCLK to H for a short time (1-10us) and back to L and read the next bit until all bits of this line are read.

Write, Erase, Security fuse (16V8/20V8) at VPP volt on EDIT

Set P/V- to H, set up the desired pattern on RA0..RA5, apply first bit to SDIN, bring SCLK for a short time to H and back to L, and transfer the next bit until all bits of this line have been transferred. Bring STB- to L and wait for the programming pulse time before you take it back to H again. Restore P/V- to L at the end of the operation.

gdrc 发表于 2009-11-4 10:45:57

这个基本上找不到完整的编程资料的.

xukaiming 发表于 2009-11-6 00:01:20

sailor0908好像知道的比较多，能说详细点吗？

sailor0908 发表于 2009-11-6 09:36:33

论坛上有人传过资料的,贴上网址:http://www.ourdev.cn/bbs/bbs_content.jsp?bbs_sn=850558&bbs_page_no=1&search_mode=1&search_text=gal&bbs_id=9999
你还得自己编上位机的程序.给你一个例程.点击此处下载 ourdev_500257.zip(文件大小:11K) (原文件名:GAL.zip)

sailor0908 发表于 2009-11-6 09:38:45

本来想自制编程器的,后来放弃了.都是网上搜集的.

qianhng 发表于 2009-11-6 19:56:47

我以前找的资料《GAL编程器原理与应用技术》，附加的asm没对过，不知道是否正确。

点击此处下载 ourdev_500487.rar(文件大小:6.16M) (原文件名:GAL编程器原理与应用技术器.rar)

xukaiming 发表于 2009-11-10 10:35:20

谢谢各位
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