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cc3100 external flash power consumption

ccent
Intellectual 340 points
Other Parts Discussed in Thread: CC3100, CC3200

Hi,

The CC3100 only consumes 4uA in hibernation. What happens to the external serial flash during the CC3100's hibernation? In standby, the external flash on the BOOSTER board consumes 50uA and in deep sleep it consumes 10uA. This may be a significant source of idle power draw compared to the CC3100. How does the CC3100 handle the external flash when entering a low power mode?

Thank you!

  • 0
    TI__Expert 8150 points

    Corey, you are right. As mentioned in the datasheet, the current consumption numbers dont include the serial-flash consumption. Before CC3100/CC3200 enter hibernate it sends the power down command to the serial flash. This command is handled by network processor in CC3100, and by hibernate driver in the 3200. In 3100 case, it is important to use timeout parameter along with the sl_Stop command to allow the NWP to send the power down command. For overall system current consumption, serial flash power down current should be added to the hibernate current. 

    Cheers,
    Gagan

  • 0
    TI__Mastermind 18455 points

    Hi Corey,

    The serial flash numbers you are stating are the max numbers for the serial flash part we are using in our reference design.
    They typical numbers are about half of that.

    Another comment is, that there are better serial flash parts out there, with as low as 1uA standby power consumption.

    Thanks,
    Alon

  • 0 in reply to Gagan Maur
    Prodigy 40 points

    Hi,

    my question is the same but about the CC3200. In hibernation mode I measured ~20 uA and I read that there is the the flash on. Can I shut down the flash using the Power Management Framework? How?

    Thanks
    Luca