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Thread: It's official: The Real-World Serial FAQ
www.piclist.com/techref/io/serials.htm?key=serial
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face BY : Russell McMahon email (remove spam text)



>> I've gotten more than enough help and feedback to start putting a
document
together.  ...........
/>>

Add  ***NEVER**** use direct RS232 input into a microprocessor pin via  a
resistor and assume that the processor protection diodes will clamp the
voltage swing adequately. In such cases you must ALWAYS ensure that the
voltage never swings outside the processor supply range (or, where
specified, the maximum limits specified by the manufacturer for NORMAL (not
absolute maximum) operation.).



       RM

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<011101c270c9$6c037ae0$2301a8c0@Paradise> 7bit

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Subject (change) It's official: The Real-World Serial FAQ

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