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 Open Source Project Willem Programmer Hardware
 27C512, PLCC32, and Enhanced Willem
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6 Posts

Posted - 03/23/2006 :  00:28:23  Show Profile  Reply with Quote

I have some 27c512 in DIP and in PLCC-32 packages. All are brand new. I try to read them. I have no problems with DIP-packed ICs. They pass “blank test” and return all “FF” during reading.

As opposite, PLCC-32 packed ICs fail “blank test” and if I read them return an array of “F7”. I observe the same picture for three ICs of three different manufacturers.

It looks like both PLCC-32 socket and FWHLPC socket are ready for 29 and 49 series but not for 27 series. Is it a case? Or I missed something?

Have not programmed yet.
Reply #1


2926 Posts

Posted - 03/23/2006 :  21:21:45  Show Profile  Reply with Quote
You need a PLCC32-DIP28 adapter.
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