On Mar 21, 16:45, allisonp_at_world.std.com wrote:
>
> > I would have thought a 2101 was far too small. These are 4kbit chips.
>
> Are these single voltage or multiple? 4k? 22pin? sounds like the
> semi-4600 and NEC D410 parts, a 4k pseudostatic 200ns cycle and access
> under 120ns. I've got a rat load of upd410s. The moto part number
> doesn't compute though.
uPD410 is 18-pin 0.3" width, 4k x 1, with one ~CE line (the MOS Technology
MCS6550 has 2 ~CS and 2 CS lines and it's 0.4" wide). I can't find any
data on a 4600 but I assume it's similar.
If you're asking about the 6550 I'm looking for, yes it is single 5V rail,
but it's 1k x 4 and it's not Motorola. In fact, I'm fairly sure no-one but
MOS Technology made them.
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
Received on Tue Mar 21 2000 - 18:09:49 GMT