Searching \ for 'OT: Help indentifying memory chips' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: www.piclist.com/techref/mems.htm?key=memory
Search entire site for: 'Help indentifying memory chips'.

Truncated match.
PICList Thread
'OT: Help indentifying memory chips'
1998\10\26@115745 by Dan Larson

flavicon
face
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

1998\10\26@121633 by Dave VanHorn

flavicon
face
>
> Intel P21256-08

DRAM, 256k x 1 bit 80 nS most likely. Good for tileing the bathroom if
you've got a lot of them, and a lot of patience.

> TOSHIBA TC55416-15H

Sounds like 15nS cache Sram. Those are easy to use.


> HM3-65764F-5

Matra-Harris part, sounds like more cache SRAM.

More... (looser matching)
- Last day of these posts
- In 1998 , 1999 only
- Today
- New search...