We currently use a MCF5272. We are discussing moving to a faster processor. I did a quick search among the various processors available and I have a few observations.
- Average ARM (Atmel) Processors seem to run at 40-50MHz. The high end 200-400Mhz were very expensive compared to 5275 ($10).
- Power QUICC (400MHz) seems to be power hungry. 6W consumption. 5275 seems to consume 1mA per MHz = 200mA @ 200MHz * 2.0V (approx) = 0.4W. There must be some problem with my calculation here since this difference is too large. I could not find any numbers in the Coldfire literature.
There does not seem to be a low power (