Well, these parts can almost always go much slower than that if you need to save power. Our hardware engineers want to because they reall, really, really do not

Well, these parts can almost always go much slower than that if you need to save power. Our hardware engineers want to because they reall, really, really do not want to provide the extra few uA for an extra half MHz or a few extra bytes of Flash. Which means I am stuck counting bytes and cycles like it is 1980 all over again. Not saying this isn't fun, but don't tell my boss ;).