Hi.

Could somone tell me what should be the values for External weak pullups.
I'm using 10K but I thing it is too much. I read somewere I should use 4.7K.
So what value should I use to be safe?

My second question:

Do I need to use external pulldown resistors on pins that are default LOW.
Let's say I want RA5 on PIC16F684 to be low by default oce I disable internalm wpu, should I use an external weak pull down resistor to tie it to ground? If yes, what value?

My third question:
Should use a RC networks (0.1 capa with an external resistor for weak pull ups or just a resistor?

I've seen that in some circuit, the designer used a 47 UF capacitor on his 7.2V power supply for supplying a circuit with a PIC16F684. Why would he use this capacitor as the current is DC?? Is it needed to filter something or to prevent some voltage loss or something?

Thanks for any replies !!!