2 Dec
1998
2 Dec
'98
4:15 p.m.
Here are the two likely candidates:
(date code)
ST 99045
MK48T02B-15
TIMEKEEPER (tm) RAM
DO NOT DISPOSE IN FIRE
The ST part of the above is a logo. If I recognized it I'd have mentioned
the actual name of the manufacturer.
SGS-Thomson. The MK is a Mostek prefix; SGS-Thomson bought Mostek from
United Technologies some years back. Now SGS-Thomson has changed their
name to STMicro. In any case, the 48T02 should be pretty easy to find as
it is a very common device.
The other possibility is this:
TOSHIBA Japan
TC541000P-15
VPP 12.5V (date code)
Are you sure that's not a TC571000? I thought the TC54xxx parts were usually
DRAMs, which wouldn't have a VPP. EPROMs would have VPP, but I think they
generally have TC57xxx numbers. In either case, this isn't the part you're
looking for.
Eric