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Thread: Help indentifying memory chips
www.piclist.com/techref/mems.htm?key=memory
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face BY : Dan Larson email (remove spam text)



Hey folks, sorry for the OT, but I have some old cahce RAM chips
from a 386 MB of about 1992.  I could not find a hit for any of these
on the Chip Index.  I think some of these may be useful for future
PIC projects I may undertake.  Here Goes:

Data sheets, or at the very least, pinouts and timing would be very
nice for each of these.  ASCII art would be fine if someone has
a non-electronic copy they could extract the raw info from.


#1

Intel P21256-08

I think it is Intel because of the large lower case "i"
logo.  Probably a x1 chip.  Good potential for serial
memory when used with shift register(s) for address?
16 pins.


#2

TOSHIBA TC55416-15H

Toshiba's web dataa sheet search turned up zilch.
I don't remember what these came out of...
22 pins.

#3

HM3-65764F-5

Presumeably more cache chips.  28 pins.  Manufacturer's
logo is some kind of amalgamated looking "MHS".  The "S" looks
more like a backward "Z".  Must be a x8 due to pin count.



Thanks for the help!

Dan

<199810261650.KAA05353@citycenter.citilink.com> 7bit

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