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MICROCHIP 28C64A *32PL Device Required Reply  
handsome
GGaulin
Hi,

I have the VP-290 and I"m trying to work with an old device that has the Microchip 28C64A-15/L chip installed. I know these chips are very old but I would like to try and use it. Is it possible for you to make a device for this that can use your WL-PL32-U001 adaptor? I know ATMEL sells a compatible EEPROM (AT28C64B) but you also do not have a device defined that uses PLCC packaging.

Cheers
George

I think I just answered my own question, I hope :)

I just ordered a PLCC32-DIP28 Adapter, I will give this a try and let you know. Please feel free to comment if you know this will not work. The datasheet for this chip shows that the pins are not directly 1 to 1 mapped between the DIP/SOIC to the PLCC version.

I made-up a pin mapping between the 28 PIN and the 32 PIN PLCC using hookup wires and connected this to the VP-290 and now I can read and write the EEPROM.

[ The message is modified by GGaulin ]
Go back list [ Posted:2014-03-20 03:26:04 ] Edit Administer top

Re:MICROCHIP 28C64A *32PL Device Reply  
handsome
lxl
yes,you are right.
Go back list [ Posted:2014-03-20 18:33:22 ] Edit Administer Top
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