D. Jay

I have to stress the fact that I asked about transceivers, because I didn't
know the answer to the solution. Even though transceivers are obvious to
some people, others don't know this *yet*. How else does one learn but to
ask a question?

As for books, they are very difficult to come by in South Africa. Here I
would easily pay US$60 for a US$18 book, if I could get it. As I assume you
know, importing is a problem since our exhcange rate sucks and import taxes
are rediculous.

So to date, what I have done with microcontrollers have been based on their
datasheets, application notes, some examples I found on the Internet, and
asking questions here.

So please, don't pick on people asking "newbie" questions (that's the
feeling I got). Such questions are asked here because those of us who need
the assistance know that the best in the world is here and will know the
answer.

Thanks
Werner



----- Original Message -----
From: "D. Jay Newman" <jay@SPRUCEGROVE.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Wednesday, April 16, 2003 2:02 PM
Subject: Re: [PIC]: USART -> RS232, Transceiver Chip Required?


> > I still feel that Microchip could have added a single sentence to the
> > datasheet saying something like "Running the USART in asynchronous mode
to
> > connect via RS232 to DTE equipment such as computers, will require the
use
> > of a line transceiver. See application note xxx for an example".
>
> The problem with this is it would rapidly inflate the documentation.
> The datasheet is meant to be read by techs, not beginners.
>
> When I was new to the microcontroller field I had the same question and
> I've been in computers for 30 years now (with much of that in software).
>
> However, *every* beginning PIC book (that looked worth picking up to me)
> had a tranciever circuit.
>
> And remember, you only need a tranciever if you want to go to real
> rs232 level signals. You can use the UART for internal communications
> without problems internally at TTL levels.
> --
> D. Jay Newman          ! Pudge controls the weather.
> jay@sprucegrove.com    !
> http://enerd.ws/~jay/  ! Oh good. My dog found the chainsaw.
>
> --
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>

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