(Yes, the
AY-5-1013 is a hardware/switch/pin-configured UART. Can suppl=
y
pinout if needed.)
That may be why I was recalling that number. The other one of those bein=
g=20
what, a 6402 or similar? I'm thinking Standard Microsystems, for which=
There was the AY-3-1015, the AY-5-1013, the 6402, and the 1602, and
possibly others. They are all much the same (some need a -12V supply line
as well as +5V, others have that pin as N/C), the configuration signals
and pinouts are the same in all cases. So finding a data sheet for one of
them will help.
-tony