Bad EPM7064LC68

Altera_Forum · ‎08-24-2013

Greetings to All,

In the course of repairing 2 boards, one of the EPM7064LC68 (PLCC) was found to be defective. So the solution is to copy the other good chip and program a new chip. I have a Xeltek Superpro but this programmer doesn't support the Altera chip. This is my first time to deal with this CPLD. I've read the Altera Programming Hardware (dspghd.pdf) and it seems that this CPLD belongs to the MAX 7000 family.

Would like to ask for your opinions if besides the Altera MPU (with the appropriate adapter), are there new programmers that can copy an existing chip and program a blank one.

Also, is the copying and programming as straight forward as an Eprom or PAL?

Thanks in advance for your help.

Altera_Forum · ‎08-26-2013

The USB Blaster or compatible (terasic makes a $50 compatible device) can program the CPLD's.

http://www.terasic.com.tw/cgi-bin/page/archive.pl?language=english&categoryno=74

However, how hard/easy it's going to be depends on if the security bit was set when the CPLD was programmed.

If it was not, you should be able to read the configuration out, and program it to the new device with no problem.

If it was set, you need to have the original programming file, or you are out of luck.

Pete

Altera_Forum · ‎08-27-2013

Hi Pete,

Thanks for your reply. I never had any experiences with these type of devices and as you have said, there's a 50/50 chance.

I'll contact Terasic and try my luck.

Cheers!

Nuki

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