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EK-TM4C1294XL: EK-TM4C1294XL hibernation mode power consumption issue

Wilson To28
Prodigy 150 points
Part Number: EK-TM4C1294XL

I ran the hibernate example on the EK-TM4C1294XL board. I also configure all the pins to avoid any leakage current. I got ~350uA when I measure the current on JP2. When I reviewed the processor data sheet, it said the hibernation current can be as low as 8uA with the RTC ON. Is there any other things that I need to do to achieve the 8uA hibernation current.

Thanks

  • 0
    Guru 117855 points

    Note that you'd "attract far more to your post if your Subject Line contained (some) hint of your issue/request!"      Repetition of the part number offers nothing of interest nor attraction...

    Your configuration to "avoid leakage current" may benefit if you "list" steps you've taken.     As your measure is beyond "order of magnitude" excessive - is your low frequency xtal circuit proper?

    All "outside world connections" must be broken - such measure must be upon the MCU, only!

    Have you a 2nd such board?    "Single board anomalies" are known - and require GREAT (unwarranted) Effort to detect & correct!      ESD damage also (may) prove a factor - board must be properly handled/deployed - at ALL times...

  • 0 in reply to cb1_mobile
    Prodigy 150 points

    Based on the data sheet of the EK-TM4C1294XL, I measured the current on JP2 which is the MCU current only. I make sure all the IO pins are in known state. I tried to set all the unused IO pins to drive low and set them to input with weak Pull up and still give me the same result. So the hibernation example from TI should give me a 8uA current on the EK-TM4C1294XL board.

    Thanks