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- Path: sparky!uunet!digex.com!digex.com!not-for-mail
- From: bote@access.digex.com (John Boteler)
- Newsgroups: sci.electronics
- Subject: Dumb/simple UART chips
- Date: 27 Jan 1993 00:09:08 -0500
- Organization: Express Access Public Access UNIX, Greenbelt, Maryland USA
- Lines: 25
- Distribution: world
- Message-ID: <1k55dkINNe5b@digex.digex.com>
- NNTP-Posting-Host: access.digex.com
-
-
- Is there a dumb UART readily available?
-
- I am designing a box that sends out serial telemetry based on 8 switches
- being ON or OFF. A serial interface looks like a good way to do it. I
- don't need interrupts, I don't need FIFOs, I don't need modem status
- bits, I don't need none of that stuff.
-
- I would rather not bump the level of complexity up several notches by
- requiring a microcontroller (and its firmware) just to initialize the
- UART speed and so forth. Is there a really dumb UART that can come up in
- a known state and just shovel data? National Semiconductor's 16450/16550
- data sheet lists the default state of all registers except the Divisor
- Latch Register, which is the most important one for my application.
- It would be nice if I could simply power it up and strobe it when
- data is ready.
-
- Maybe I should be looking at the 65xx family?
-
-
- --
- bote@access.digex.com (John Boteler)
- This week's usenet malapropism: foo, foo-foo
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