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Could CC2540 advertised during sleep mode?

Robert Kris Jocson
Prodigy 70 points
Other Parts Discussed in Thread: CC2540

Hi All,

We are working with CC2540, and we would like to know if the CC2540 is doing advertisement or discoverable during sleep mode (10uA)?

Looking forward for your comments.

Kris

  • 0
    TI__Expert 5200 points

    Kris,

    In sleep mode and at 10uA, the radio is not on.  What typically happens is the microcontroller sleeps for a period of time, wakes up, advertises, and then goes back to sleep.

    By doing this it enabled a much lower average current consumption. When the radio is transmitting, it is in mAs and not uAs of power consumption.

    Let us know if you have any further questions.

    -Jason

  • 0 in reply to Jason Kriek
    Prodigy 70 points

    Hi Jason,

    Thank you for reply. Just for clarification, below is a scenario on our side.

    1. CC2540 is already paired with Phone.

    2. The person will leave for 1hr and return, during the absense of the person, CC2540 is already at sleep mode and wake at 5s for advertises and go back to sleep for 30s (cycle for sleep mode and awake)

    3. During the return, the phone will do the scanning and Lets say the CC2540 is awake, does the phone will automatically activate CC2540 and will stop the sleep mode cycle, since at the very start the phone and CC2540 is already paired?

    Could CC2540 can send an interrupt to wake-up an MCU at slep mode when CC2540 is accessed by the phone?

    Krgrds,

    Kris