I was looking on the atmel product catalogue and saw that the AtMega328 that seems farily common has a 328 and 328P variation. Only thing I can see on the atmel site is that the 328P has picopower. What is this and what effect does it have? Which of the 2 is generally more suitable for usage in a robot?
My assumption was that the picopower will operate on lower voltages but the datasheets on the atmel site seem identical in that respect unless its an error on there part.