Messages in this thread | | | From | Grant Edwards <> | Subject | Re: [PATCH] Documentation about RS485 serial communications | Date | Tue, 19 Oct 2010 14:29:48 +0000 (UTC) |
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On 2010-10-19, Claudio Scordino <claudio@evidence.eu.com> wrote:
> +2. HARDWARE-RELATED CONSIDERATIONS > + > + Some CPUs (e.g., Atmel AT91) contain a transceiver capable of working both > + as RS232 and RS485.
Pardon my curiosity, but I've looked at a few AT91 parts, and I've never seen on with an internal transceiver -- nor does Google seem able to find any.
Frankly, I'd be pretty surprised, since it would be very difficult (fab-wise), to build a mircoprocessor with I/O cells capable of withstanding the voltage levels specified in RS232.
Can you specify to which parts you're referring?
-- Grant Edwards grant.b.edwards Yow! I have the power to at HALT PRODUCTION on all gmail.com TEENAGE SEX COMEDIES!!
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