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CCS/LAUNCHXL-CC1312R1: WoR power consumption problem

Part Number: LAUNCHXL-CC1312R1

Tool/software: Code Composer Studio

Hi,

I'm testing the WoR power consumption and use rfWakeOnRadioRx_CC1312R1_LAUNCHXL_tirtos_ccs project for my testing.
I found that the current peak time seems has close to far cycle, not always per half second.
Please check the attached picture.
Does it is normal or abnormal?
Thanks.

  • Hi,

    By FAE, I remove all jumper and change power measure method, get the same result, please check attached picture, thanks.

  • Chris,

    The CC1312 has DCDC converter on board and this DCDC converter will produce little current spikes while in sleep mode. The timing of the these little spikes is automatically controlled by a statemachine that will adaptively minimize the number of spikes (DCDC pulses) over time as it learns how much leakage current is actually being consumed.

    This statemachine is reset back to a slightly conservative value every time the device goes from Active mode back to sleep mode. So, yes, I think what you are see makes sense.

    I suggest routing the RF statemachine states to a pin, like shown below, then you can see what the RF core is doing.

    Regards,
    /TA