I am testing to measure current of CC2540EMK and CC2541EMK.
Test BLE project is SimpleBLEPeripheral project. I also enable POWER_SAVING both.
I used ENERGY MICRO's energyAware Profiler for measuring the current consumption.
By comparing two chip's datasheet, I think that CC2541 has less current consumption than CC2540.
But, result is CC2541EMK is more current consumption than CC2540EMK. ( CC2541EMK : about 1.1mA , CC2540EMK : about 140uA )
I don't know why. I think CC2540 and CC2541 are the same with the exception of supporting USB.
Sorry for my poor english.
Thank you for helping me.