Quote Originally Posted by mister_e View Post
No pull-up or WPU... the i/o is set as an output and set to low and AN INT happen???? huh???? I must miss something here!
Yes an int happens... No clue why it happens.

Maybe i'm blind... but i don't see any cod in here... so i would assume the TRIS register haven't been changed. Try LOW PORTA.5 instead.. if this work.. it just mean you didn't at least changed TRISA setting....or the INT don't care about the TRIS... i'll check the datasheet...
I didn't put any code here but beleive me,

TRIS is set as 0 (output) for RA5 and I used PORTA.5 = 0 to be sure it has been set LOW.

I beleive the pin should be low and an int should be triggered when I apply +5V on the pin to set it logicaly HIGH but that's not what's happening.
And an int happens for this pin even in I touch another pin or even the GND heatsink of the L7805 voltage regulator or +5V or GND...

I checked the connexions on the breadboard and everything looks fine...
Very frustrating.