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Jhern.1
Visitor II
July 7, 2020
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Approach for low power design

  • July 7, 2020
  • 1 reply
  • 983 views

Hello,

My design must be very low power consuming. So, I am intended to reach 50 uA while waiting for a card by using the Tag detection mode.

Is there any other approach so as to decrease those 50 uA while waiting for a transponder?

Reagards, Ramon

    This topic has been closed for replies.
    Best answer by Brian TIDAL

    Hi,

    the tag detection mode is supported in the ST25R95/CR95HF RFAL. It is demonstrated in the X-CUBE-NFC3 polling demo.

    See AN3433 (Optimization of wake-up time and power consumption on ST25R95 and CR95HF devices) for detail information about low power mode.

    For your information, the IRQ_OUT interrupt is raised by the ST25R95/CR95HF when exiting the low power mode (i.e. when a tag is in the operating field). This can be used to wake up the host MCU from its low power mode.

    Rgds

    BT

    1 reply

    B
    Brian TIDALAnswer
    Technical Moderator
    July 7, 2020

    Hi,

    the tag detection mode is supported in the ST25R95/CR95HF RFAL. It is demonstrated in the X-CUBE-NFC3 polling demo.

    See AN3433 (Optimization of wake-up time and power consumption on ST25R95 and CR95HF devices) for detail information about low power mode.

    For your information, the IRQ_OUT interrupt is raised by the ST25R95/CR95HF when exiting the low power mode (i.e. when a tag is in the operating field). This can be used to wake up the host MCU from its low power mode.

    Rgds

    BT

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