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cc1110 power consumption in PM2

Peter Heusch
Prodigy 40 points

Hello everybody,

one of our students created a project using the cc1110 mini development kit. By switching to PM2 with the low speed RC oscillator she managed to reduce power consumption to roughly 50 uA  This is ok for our application but I would be interested on how low you can reduce the power consumption of the whole MDK in the optimal case

Peter

  • 0
    TI__Guru**** 317180 points

    The CC1110 should according to the datasheet use less than 0.5uA in PM2. The MDK only contains a CC1110 so the kit should use sub 1uA in PM2.

    - Is anything connected to the kit? If the debugger is connected it could be that some of the IOs are in a non optimal state (tristae output driving an input)

    - Do you know that you are in PM2?

  • 0 in reply to TER
    Prodigy 40 points

    Thank you, you gave me the right hint. Indeed P1_1 (connected to the red led) was configured as input. Selecting it as output and setting it to 0V dropped the current to less than 1 µA. Didn't think that a forgotten input could draw so much current.