I've got myself a new PCB with a ATmega128RFA1 and managed to program the Âµc a couple of times, but now for some reason I cant get to read the device signature.
I'm using an AVR MkII ISP to program the ÂµC, but everytime I try to read from the device the red light of the programmer starts blinking.
Â¿can the ÂµC be broken?
Â¿maybe a shortcircuit or something?
Is there something to check other than visually looking for short circuits?
I've measured the VCC - Ground resistance and it's over 20MOh or so.
(I know it's a bad idea but, can the short circuit protection be skipped?)