Most peripherals these days are 3.3V.
Meanwhile, I really like the robustness of the Atmega family, and I have a fair amount of code developed for it.
I can run the AVRs at 10 MHz and 3.3 volts, but when talking to things like displays, that makes screen clears painfully slow -- 20 MHz is better (and 50 MHz would be even more so :-)
I am kind-of tired of soldering up level translators -- either resistive dividers, or extra chips -- for every little project.
So, are there AVR parts that run at 20 Mhz, at 3.3V? And, because I haven't taken the jump to reflow soldering (I tried once and it was a disaster,) are those available in DIL packages if so?
I'm wondering whether I need to go to a new architecture to get this. All those Cortex-M0/3/4 devices from different vendors look sweet, except I have to re-do all my code!