16 Jul
2005
16 Jul
'05
11:39 p.m.
I decided to run a memory test on some boards I have
and I found a
bad chip. It's on a CompuPro RAM14 and the chip is a MM2147J. None of my
[...]
Can anyone help me with a suitable cross for this
chip...and a
source? My usual haunts don't show stock on this number.
I can't help with suppliers, and none of my data books give crosses for
this chip, but I can tell you that it's a 4K * 1 static RAM. The pinout
is :
1 : A0
2 : A1
3 : A2
4 : A3
5 : A4
6 : A5
7 : Dout
8 : WE/
9 : Ground
10 : CS/
11 : Din
12 : A11
13 : A10
14 : A9
15 : A8
16 : A7
17 : A6
18 : Vcc
The data sheet I have mentions a 60ns version, it sounds like a pretty
fast chip for the time. I can't believe an S100 board needs something
that fast.
-tony