I think the best thing would to design a way that the pins wouldn't be
touched by a persons fingers.  I don't know the situation you are in, so
maybe a better explanation of why the pins would be touched would help.  As
for esd to pins, there are surge arrestor circuits available that could be
implemented.  My company a well as others must be able to design products
to withstand esd.  I can maybe look to see what kind of circuits we use if
it helps.

Rob

>
>hello,
>
>I have one question for all you guys/girls
>
>In a project with a PIC16C84 the inputs can be touched bij fingers,
>my question : how can i protect the i/o against ESD charges ?
>
>Kind regards,
>
>Rob Aerts
>
>