If an AVR can take max 40mA on each IO and max 200mA on VCC and Gnd pins.
This is simple when there only is one Gnd and Vcc, but for a chip with 3 Vcc and Gnd pins what is max current for the chip?
3x200=600mA
3x200-50=550mA (or something like that)
200mA because it's heat that is the problem.
or ?