FYI, the June 2012 issue of "Circuit Cellar" has an article on the Renesas RL78[1] (page 22), which is apparently a low power microcontroller designed specifically for battery operation, with a supply voltage from 1.6 V to 5.5 V. It has a snooze mode where you can choose any of several major sections of the CPU (and integrated peripherals) to turn off.
1. http://www.renesas.com/products/mpumcu/rl78/index.jsp Interestingly it seems to have the ability to have the ADC continue to operate while the rest of the CPU is asleep, and wake up the CPU when a voltage threshold is reached. However, keeping the ADC running still consumes 0.5 mA. (The article is part of some "RL78 Green Energy Design Challenge": http://www.circuitcellar.com/contests/renesasRL78challenge/ Looks like you need to submit a project proposal, and if they like it, they send you a free dev kit, and you have a chance to win some of the $17K in prize money.) -Tom _______________________________________________ Hardwarehacking mailing list [email protected] http://lists.blu.org/mailman/listinfo/hardwarehacking
