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Weak Pull Up PIC16F628 clarification

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Dan East

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On the PIC12F629 in order to use weak pull ups you have to enable it globally (via OPTION), and set each specific IO port bit in WPU that you want pull ups for.

However it seems that with the PIC16F628 you cannot select pull-up per IO channel. You set OPTION:RBPU to 0, then pull ups are enabled for all PORTB pins that are inputs? Is that correct?

Dan East
 
Thanks. This seemed counterintuitive, because the 629 is actually more robust than the 628 in this area.

Dan East
 
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