I have a stash of ATMEGAs that someone gave me, but I let the smoke out of some of them and need to buy more. I found out it's simpler when people give them to you. There are different part numbers, and different prices, but I can't find out the differences. Can someone point me to the AVR documentation that explains the part number suffixes?
This is from Digikey.
I can't see any spec differences between these chips. Same with the 168: