I've been looking at ARM MCUs for something with more horsepower and functionality than the 8-bit AVRs I've been using for things like battery-powered sensor nodes.
The 22mA power consumption @48Mhz is too high to run off a coin cell. I could run it at 8Mhz, but then I might as well stick with an AVR.
I looked at some of the Cypress PSoC 4 chips, and while there are some cheap (<$1) ones, it looks like you have to use a proprietary windows-only IDE to configure and program the chips. I want to be able to use open-source tools like arm-none-eabi-gcc and a serial uart bootloader or a cheap swd USB dongle.
Any suggestions for an MCU that needs < 10mA @24Mzh, or even better, at 48?