> Yep.  I would expect that things like the timing of a program pulse would
> have to be done with a one-shot or something.  And you might still need
> the CMOS shift register on the UART outputs to expand to the number of
> bits you need.  And yes, a non-MPU-buss UART is probably 40 pins.

Standard Microsystems Corporation (SMC) were selling a 20 PIN UART
that regrettably needs a processor, one data and handshake each way
with internal baud rate generator.

20 Pin PLCC and DIP

Part number COM81C17

They might have a small pin programmable UART one though.
Year old contact details, Hauppage NY, (516) 273-3100

Cheers
--
Kalle Pihlajasaari     kalle@data.co.za        ( soon kalle@ip.co.za )
Interface Products     Box 15775, Doornfontein, 2028, South Africa
+27 (11) 402-7750      Fax: +27 (11) 402-7751  ( soon 402-7723 )