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Thread: grounding unused inputs
face picon face BY : Olin Lathrop email (remove spam text)

> To be "safe", it is best to tie unused input pins to ground [or Vcc,
> doesn't much matter which] *ONLY* through a resistor, rather than
> directly with a short. This is not superstition, as during code
> development it is all too easy to accidentally configure a pin
> intended as input to output. You then run the risk of
> short-circuiting an output.

Perhaps in a low volume product.  I wouldn't want to burden a high volume
product with unnecessary parts for a minor debugging convenience.

Olin Lathrop, embedded systems consultant in Devens Massachusetts
(978) 772-3129, .....olinspamSTOPspamembedinc.com, http://www.embedinc.com

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