I've been looking at the multitude of various ATMEGA 88/168/328 variants available, trying to figure out what all the suffixes mean, reading datasheets (some of which are undoubtably a little "obsolete")... and I'm still a bit in the dark. Tried searching this forum, but I don't even know how to properly search what I'm after, so here goes.
There are the "plain vanilla" AVR Megas... example:
There are "P" variants... example:
I gather that this means "Picopower" device... though I don't understand exactly what makes it "Picopower", and if there's any "downside" to this as opposed to a plain vanilla part.
To further throw confusion into the mix, there are "A" suffixes parts:
and "PA" suffixed parts:
and "V" suffixed parts:
The "V" parts seem to be only available in slower speed grades, typically 10MHZ max.
Alright... I'm perpetually confused about all of this... Atmel's datasheets lump them all together in one sheet, and expect YOU to somehow decipher all of this, probably by reading an obscure footnote on page 362 or something like that. Ordering information section does NOT help, and device overviews are worthless unless you want to know that "P" means "Picopower" - whatever that means in the real world.
Can anyone give me a succinct synopsis, with pros/cons of the various types?