9 Jul
2007
9 Jul
'07
5:50 p.m.
--- Billy Pettit <Billy.Pettit at wdc.com> wrote:
The parts were on some mini-486 PCBs.
These are undoubtedly high-speed CMOS cache RAM.
There were many makers of these in the 486 era,
and the pinouts tended to be standard. Do you
have a manual for the 486 boards? It will likely
specify compatible cache chips, as these were
freqently supplied by the integrator, not
pre-installed.
If these really are 16 bit wide and 32K deep, they
would be great for a SBC
I'm building. Especially if the 15 means 15 ns.
I found a datasheet for a UM61512AK-15 (at
www.alldatasheet.com) which is a
15ns 64K x 8 CMOS SRAM. I suspect it is similar.
--Bill