>> Joe, can you please explain what you meant by this? Inputs should not
>> sink current unless the PIC is not powered and you are sinking current
>> through the protection diodes.
>
> Inputs can sink current, how would they be inputs otherwise? From the
> PIC16F690 Datasheet:
>
> Maximum current sunk by PORTA, PORTB and PORTC (combined)
> ...................................................... 200 mA
> Maximum current sourced PORTA, PORTB and PORTC
> (combined)....................................................... 200 mA

But that is when the appropriate pins are configured as outputs. When used 
as inputs a pin will have only leakage current. 

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