does microcontroller pull up/ pull down resistance chage with voltage 5v to 3v? : <p>Normally I would use a 10k ohm resistor for 5v circuits for pull up/down pins</p>

<p>Is it better to use a different value resistor on 3v pins?
 If so what would be required?</p>

<p>ohms law and all.</p>

<p>Regards mike</p>
