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As long as the Vpp is right, it should work. But the regular dip socket will be fine for me as i have a ic puller. You need a LOT of pins to dztasheet the 15 address pins, 8 data pins and the various control pins. However, after doing several searches, including reading several posts about interfacing with eproms, I have yet to find a solution.

28C Datasheet PDF – ON Semiconductor

Will report back when soldered and tested. I think the jest of my post was lost. You can link to a specific post using the little icon to the left of Posted: Can any one steer me to the right direction. I also got it looking close to what unaclocker had. So even though it says it wrote the data, it shows as nothing has changed. Select a forum Page 15 of I use a 28C64 on my to adapter.


I should note that the data sheet I saw had the incorrect timing diagram for reading the value. Haven’t soldered anything yet but will this weekend.

View 28c512-513 datasheet:

I’d think it would be a big deal to even used a C64 or less without too much effort. Next step would be my soldering. Thu May 04, 9: HTH — good luck!

Someone recently eatasheet hooking up a static RAM chip to an Arduino with some shift registers. Download the data sheet to see how to address, read, and write to the chip. Thank you so much Mario. The 28Cxx parts have a built in charge pump circuit to create their programming voltage. Dwight I’ve message rpress about the reading issue. Dwight, there is a charge pump datasneet on the boards.

Can you post the schematic?

28C 28C parallel eeproms

Schematic is on page 8 and fourth post down. Dr Jefyll, Google [Bot] and 2 guests.

I don’t use a programmer, I just use the on my KIM-1 and program it in place. Ok, I will keep that datashet mind when I post up the boards after soldering the components.


I don’t want to reinvent the wheel for something that I’m sure has been done before. Rpress has created the circuit to program the 27xXxX chips. Thu May 04, 6: Unlike the 28C, these need 12V applied to the correct pins to program. You can only flip bits one way by writing, unlike the 28C parts. Fri Jul 14, 3: Then the remaining sixteen address inputs would dtasheet from the programmer.

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