Any design "gotchas" with the Xicor X2864 EEPROM?

Allison ajp166 at
Thu Sep 16 07:48:13 CDT 2010

Hi Ethan,

I have a unch of them and use them frequently.
The way I program them is a 64kx8 ram board that uses
2164s and I just plug them in and run a simple copy program
that has a delay after write for each byte.  Beats 2764s!

I use the parts where 2764s would be used paying attention
to device access times.

You shuld be able to find an english datasheet as they were


Ethan Dicks wrote:
> Hi, All,
> I'm going through a box of older ICs and ran across a few X2864s.  I
> know they are 64Kbit JEDEC EEPROMs, but what I don't know is if there
> are any odd issues with them.  I found a datasheet that's mostly in
> Japanese - I do happen to read some Japanese, but I'm far from fluent.
> I'm mostly curious about in-circuit programming.  I know a lot of
> newer hobby-type projects use different families of EEPROMs and that
> some devices can only program certain ones.  What I don't know is how
> that relates to something as old as the X2864.  I can probably program
> these in a standalone device programmer and potentially have to build
> a pin-swabber socket for a 2364 (or even 2332 for a PET), but I'd like
> to know if I'm opening a can of worms before I begin.
> Thanks for any warnings of pitfalls ahead.
> -ethan

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