Help selecting an embedded controller
Check out the Digikey website
http://search.digikey.com/scripts/DkSearch/dksus.dll?Cat=2556109

They have an online configurator where you can spec out your micro piece by piece... there are several that meet your spec.  If you load the above page, be sure to scroll to the right, as there are tons and tons of options including package, memory peripherals etc...