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NNTP-Posting-Date: Thu, 21 Nov 2002 21:32:37 -0600
From: "David Jones"
Subject: Re: can't find stand alone UART supplier.
Date: Thu, 21 Nov 2002 22:28:06 -0500
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thanks. how much trouble or how much larger do you think the circuit would
be if I used a microprocessor? do you think I could use the microprocessor
to do the job of two uarts and maybe like 4 decoders? I'm going to need to
convert between 1.5bytes and 2 bytes of data from serial format to parallel
so I'm starting to think that a microprocessor with a software uart might
"Michael F. Coyle" wrote in message
> "David Jones" wrote in message
> > I need a stand alone UART, preferably with an internal baud generator
> > its not necessary. I've found and been given several names but haven't
> > able to actually find one. I've tried websites and local stores but no
> > has the stuff. I've even tried asking a manufacturing and am still
> > but I don't want to pay 5 or so bucks just to ship a single chip when I
> > could get it with the rest of my order somewhere else. any suggestions
> > common names or part numbers and places I can find them?
> Hi David,
> The "generic" standalone UART is the 6402 (different manufacturers put
> various prefixes/suffixes on the part). It's available from Jameco
> (www.jameco.com) for five bucks apiece. (They also show a part number
> TR1863 as equivalent.) It comes in a 40-pin package. It does not have a
> built-in baud-rate generator so you'll have to add your own. A CMOS 4060
> can be used for this. I believe Intersil has a 6402 data sheet on their
> I doubt you'll find this part locally. Nowadays people use
> microprocessor-compatible UARTs or microcontrollers with built-in serial
> ports. When you finish this project you might want to start to learn
> Oh, you'll also need a part to translate the 5-volt signals from the UART
> RS-232 levels -- most likely a MAX232. Someone has probably mentioned
> - Michael
> Remove "No Spam Please" from return address.
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