Hi - I'm trying to choose a microcontroller for a project I'm working on. Originally I had been thinking about using a 20Mhz Atmel AVR, such as an ATMEGA168, but I became worried about the raw computing power of the AVR, as one of the main roles of this chip will be to do alot of 16 bit multiplication and trig at a fairly high speed. So I've been looking at using an ARM - specifically the Atmel AT91SAM7A3 looks very interesting to me. It's clocked 3 times as fast as the ATMEGA168, but I expect that isn't a good way at all to compare it's ability to handle this task to the AVR's. Is there any good way to make a comparison for this application without benchmarking the chips? Thanks,
-Michael J. Noone