ST27C512

**maaxxyy** · 17th April, 2011, 10:53 PM

Hi guys, i'm trying to read the above eprom ST M27C512 using DIP32-PLCC32 adapter, but read is showing blank. I'm using willem GQ-3X programmer, i also have x-prog and upa. If anyone could give me pointers, i would be really grateful. Thanks

**miha99** · 19th April, 2011, 09:29 PM

GQ-3X programmer with DIP32-PLCC32 adapter must read this flash, be shure to have a good contact in adapter with flash !!!

**pajo** · 19th April, 2011, 09:38 PM

probably bad contacts

**PierreTheron** · 19th April, 2011, 10:07 PM

Originally Posted by pajo

probably bad contacts

Bad contacts .. Thats correct .. Try to put a 2mm piece off plastic liner underneat the chip or improvise till you get good contact..

My pint of thought.

Cheers Beers

**elchip** · 19th April, 2011, 10:19 PM

Originally Posted by PierreTheron

Bad contacts .. Thats correct .. Try to put a 2mm piece off plastic liner underneat the chip or improvise till you get good contact..

My pint of thought.

Cheers Beers

Yes many time PLCC socket is to deep maked as bad copy of original socked and chip go to many down.
You have right 1000%.

Best regard's

**Zmann** · 20th April, 2011, 05:30 AM

Dont know that if there is a SW update for pin configuration for 27Cxxx of PLCC32 package. And this as normally does to many universal programmer for 27Cxxx PLCC32, willem GQ-3X also, needs DIP28-PLCC32 adapter and not DIP32-PLCC32.

**maaxxyy** · 26th April, 2011, 01:27 AM

Thanks for your comments guys, is everyone sure on the adapter dip28 and not dip32?

**racin-snake** · 26th April, 2011, 01:42 AM

xprog adapter mate and try giving the contacts on the chip a bit of a clean with a bit of wet or dry or as i use the wifes emery board
make sure its clean
it also helps the soldering back
straight forward with xprog adapter