On Mar 9, 2007, at 5:39 AM, Ernst Bachmann wrote:
>> I'm reading the datasheet for the PIC18F252. On page 259, it
>> states that the maximum voltage on any pin (with a few exceptions) is
>> Vdd+0.3V. Later, on page 287, it specifies more specifically that
>> the maximum voltage for Vref (parameter A21) is also Vdd+0.3V.
>
> Those are the "absolute maximum ratings", and just mean you won't
> immediatly
> destroy your µC when you apply Vdd+0.3V.
Yes, I'm quite aware. I pointed it out as the ultimate reason why
pumping +12V into the Vref pin probably isn't what the original
posted really wanted to do.
-Dave
--
Dave McGuire
Port Charlotte, FL
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