Hi all I need to connect a button to my Arduino Due so i can use it as a start/stop signal. My intention is to connect it to the 3.3V line and make a pulldown resistance (like this, but with the 3.3V line) so that I don't break my board. Anyway, I can't exactly find the maximum amount of current that each pin can recieve. I mean: the resistance connected to the ground will be something like 10 kOhm, but I need to know the max receivable mAmperes in order to put another correct resistance between the button and the input pin. The official support isn't very specific about this:
Each pin can provide (source) a current of 3 mA [u]or[/u] 15 mA, [u]depending on the pin[/u], or receive (sink) a current of 6 mA [u]or[/u] 9 mA, [u]depending on the pin[/u].
Can you please provide me any exact value?
Thanks in advance, Michele
P.s: sorry for my bad english ;)