Some power drain figures for components: MSP430: Operating at 1MHz 330 uA Low power 0 67 uA Low power 4 <1 uA Schmitt-Trigger Inputs: High-impedance leakage: 50 uA max (60 KOhm resistance) Internal pullup/down: 60-85-150 uA (20-35-50 KOhm) per pin Two inputs that are opened ~.8 of the time and closed ~.2 of the time: 100*.8 + 200*.2 = 120 uA Together with the CPU in LP0: 120 + 70 = 190 uA CC2541: Transmit or recieve: 15 ma Power mode 1 270 uA Power mode 2 1 uA