The problem with grounding directly, is if something goes wrong and
changes them to outputs at the oppostie polarity.

The cheapest is to set them as outputs, but again, if something goes
wrong and sets them as inputs, then they float and "may" cause problems.

The best (??) is to set them as low outputs with pull down resistors, or
high with pullups.  If something goes wrong, only a slight increase in
power consumption occurs.



Brendan Moran wrote:
>
> Just wondering what you folks consider standard procedure for
> handling unused PIC pins.  I can see two decent options, myself.  1st
> is to leave them as inputs, and ground them.  2nd is to set them to
> outputs, and leave them disconnected.  Both should use minimal power, but I
> don't know the other pros and cons related to the option.
>
> --Brendan
>
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--
Best regards

Tony

mICros
http://www.bubblesoftonline.com
mailto:sales@bubblesoftonline.com

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