I really, really have searched, but I'm still none the wiser.
Simply, can the timer/counter on an xmega just accumulate pulses on an input if the chip is in a sleep mode? Seems no clock is required for ths - the pulse is the clock...
Sorry it's so stupid a question, but I'd have thought it would be a basic thing for a counterr to do, yet I can't find in any datasheet/manual/app. note.
As always, humble thanks!