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From: bender@oobleck.Eng.Sun.COM (Michael Bender)
Newsgroups: sci.electronics
Subject: Re: easy to use RS232 chip
Keywords: RS232 chip
Message-ID: <7246@exodus.Eng.Sun.COM>
Date: 3 Feb 91 18:49:48 GMT
References: <1991Feb1.003857.2775@amd.com>
Sender: news@exodus.Eng.Sun.COM
Distribution: usa
Organization: Sun Microsystems, Mt. View, Ca.
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In article <-:-> lpdjb@brahms.amd.com (Jerry Bemis) writes:
=>I am looking for a rs232 chip that can be connected to a PC/AT com port
->that does not need a controler, procceser connected to it.  It will be used
->for recieve only.  (data will pass from a PC to to this homemade device.)

I think you mean that you want a device (chip) that you can connect to your
PC's serial port so that you can send serial data to this chip and have it
output the data as 8 parallel lines, right?  If this is what you mean, I've
found the big 40-pin UART that Radio Shack sells (sold??), an
AY-XX-something, to be really good for this type of application, since you
don't need a controller on the other end to set up the chip's parameters;
all of them are strappable via pins on the chip (that's one of the reasons
that it's a 40-pin vs. 28-pin UART!)

I used one a few years ago for a light controller - my computer sent a byte
to the AY-XX UART, the bits that were on corresponded to the lights that I
wanted on.  I think that the UART also provides a "data ready" signal to let
you know that a byte has just been received.

have fun!
mike
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