On Fri, Jun 1, 2012 at 10:27 PM, Xiaofan Chen wrote: > The issue is probably because ARM based MCU chips are now > in the same price segment of PIC18. PIC18F2550 is not really > cheaper compared to more capable 32bit ARM MCUs. That may be true - the PIC18 will probably always* come in smaller packages. The low-power features are likely a little better. I don't know how other peripherals compare. I know the PIC18 has the option for many different motor and power control PWMs, for example. The ARMs I have seen are more suited for UI and multimedia. --=20 Martin K. * Next 5 years --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .