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OPT3004: Low / High-limit register at not-using INT

Hirokazu Takahashi
Expert 8420 points
Part Number: OPT3004

Hello Support team,

If the interrupt signal is not used, how should the Low/High-limit register value be set?
If there will be possibility to reduce power consumption by Low / High-limit register configuration, please let me know about any settings.

Best Regards,
Hirokazu Takahashi

  • 0
    Prodigy 10 points

    In addition to above question, could you tell me the main use case of this function?

    I couldn't understand this function after reading the datasheet.

    Best Regards,

    Keita Ogawa

  • 0 in reply to user4698069
    TI__Mastermind 25895 points

    Hi,

    If INT is not used I am not following what would be the point of setting these registers. You can leave as min and max lux so that they are not triggered or use a different mode depending on your requirements, but should not have a significant effect on power - device is already very low power.

    Common use case is to interrupt the MCU so it does not have to read every data ready or even at all from the sensor. The limits allow MCU to be notified when threshold is reached to take action then and not have to do any I2C reads from the device. This device has many interrupt modes and further detail is in the interrupt modes section of the datasheet.

    Best,

    Alex