20 Dec
2007
20 Dec
'07
3:05 p.m.
On Dec 20, 2007, at 2:44 PM, Jim Brain wrote:
Wow, that's a lot to pay for a hardwire solution:
http://store.americanmicrosemiconductor.com/tr1602.html
A TINY2313 AVR will do the job in a single IC for a few bucks. Heck,
I'd even program it for you if you told me the specifics (how to
signal that a new byte as arrived, for example)
Maybe if you have a TR1602 lying around, or maybe that place is ultra
expensive.
Those people are on crack. Unicorn has TR1602s for four bucks, no
firmware development required.
-Dave
--
Dave McGuire
Port Charlotte, FL
Does anyone have a schematic for *simple* hardware
only circuit
using a
commonly available UART, like an 8251 or 8250, to do the serial to
parallel conversion? I am looking for a schematic which I can easily
modify to strap the UART to 300bps operation.
If you don't want programmable
logic, an 8251 or 8250 isn't going to
be what you want. Try a TR1602 or TR1865 or any of the other
"hardwire" UARTS--set parity, data bits, etc. by connecting
appropriate pins to Vcc or GND; put the serial data in on one pin and
take the parallel data out on 8 pins. No programming needed.