Michael Watterson ha scritto:
>>
>> no, and are there any for PORTD?
>>   
> Yes,
> Port D has them as well as Port B
> But re-reading the datasheet reveals that by default the pullups are off.
> /RBPU turns on all port B pullups
> /RDPU turns on all port D pullups


thank you Michael, must've missed them then :)
I usually use PORTB for inputs (must be legacy) and PORTD for output.
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