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BQ40Z50: Issue with BQ40Z50 EMSHUT Timeout functionality

kevin chung
Prodigy 20 points

Part Number: BQ40Z50

I am entering EMSHUT mode by sending the command sequence 0x270C and 0x043D to ManufacturerAccess() (0x00).

However, the device fails to exit EMSHUT mode after the timeout period expires. It appears the timeout function is not working as expected.

Here are my current configuration settings:

  • DA Configuration: 0033

  • Power Off, Timeout: 1 min

  • MFC Delay: 1 s

    Note: Based on the documentation, the gauge should exit EMSHUT after the shutdown restore timeout defined by the Timeout parameter. Since my timeout is not set to 0, I expect it to wake up automatically.

  • 588d5986-be00-4505-ba6e-4fb323ddf011.png

  • image.png
  • 0
    TI__Mastermind 45765 points

    Hello,

    This question has been assigned within the team and will be followed up within the team when possible. 

    *We are on a Holiday week and we are working through the e2e trends thus response time will be longer than usual

    Thank you,
    Alan 

  • 0
    TI__Genius 9745 points

    Hello Kevin,

    I read the TRM, and you still need to do any of 4 methods to exit shutdown in addition to the timeout. Did you try any of the four exiting methods?

    """

    In addition to these exit conditions, if the gauge enters EMSHUT (via a push button, for example), it can exit the EMSHUT mode after a shutdown restore timeout defined by the Timeout parameter. When setting the timeout is equal to 0, it will not exit EMSHUT mode.

    """