Power limit is incorrect - its 200mA per VCC or GND pin - there are 4 of each, so 800mA would be the MAX.
Other chips are the same too - 200mA per VCC/AVCC pin, the total load spread over the ports supports that.
See the "Electrical characteristics" section of the datasheets.
We have discussed this before without reaching agreement as it seems to be based on how one interprets the datasheet. I'm still of the opinion that no AVR 8 bit chip would allow a total device current draw of 800ma and have never seen that total number (800ma) used in any avr datasheet.
Take the 328P for example.
Datasheet in electrical absolute maximum ratings section:
DC Current VCC and GND Pins................................. 200.0mA
Note they say 'Pins' not Pin, so I feel the 200ma value is the maximum total chip current consumption limit.
Comments from any welcomed, I was wrong once before.