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INA226-Q1:

Part Number: INA226-Q1

Hi team,

I don't find the way of Alert pin reset. After Alert pin responded to Over-current, how the alert pin reset?

  • Hey Olin,

    I assume you want to know how to reset the Alert pin when device is set to Latch mode. Latch mode (06h register, bit 0 =1) means the Alert pin and the Alert Flag bit remain active following a fault until the Mask/Enable Register has been read. If device is in transparent mode, then the Alert pin and Alert Flag bit reset to their idle states when the fault has been cleared. You can read about this in section 7.6.7 of datasheet which describes the Mask/Enable Register (06h).

    So if device is in latch mode, the Alert pin is asserted, and the over-current condition is no longer occurring, then to reset the alert pin the host must read the Mask/Enable Register (06h). The host can also reset the alert pin by writing to the Configuration register (00h). See the excerpt from datasheet below.

    Best,

    Peter