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BQ40Z50-R2: Is there a way to Simulate the Condition Flag ?

Enrique Garcia1
Prodigy 156 points
Part Number: BQ40Z50-R2

Hello TI,

Is there a way to Simulate the Condition Flag?

The CF (Bit 7): Condition Flag is High when MaxError() > Max Error Limit (condition cycle needed). Is it possible to simulate this scenario?

Can the MaxError() be manually modified? or is only possible to read it?

Thanks and regards

  • 0
    TI__Genius 11535 points

    Hi Enrique,

    MaxError() is read only so no, it cannot be modified. The only ways to set that flag would be to 1) perform a full device reset or 2) prevent a valid Qmax update from happening, which could be expedited by lowering the Time Cycle Equivalent parameter.

    Best,

    Jessica

  • 0 in reply to Jessica H.
    Prodigy 156 points

    Hello Jessica,

    Many thanks for your answer. Unsuccessfully, after the full device reset, the CF stays only HIGH for around 4s. Is there a way to keep the CF HIGH after a reset?

    Regards

  • 0 in reply to Enrique Garcia1
    TI__Guru** 105770 points

    Hello Enrique,

    Is your MaxError() over the threshold you set in dataflash for the condition flag to set? Can you share your .gg file export so we can take a look?

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    Prodigy 156 points

    Hello Wyatt,

    Many thanks for taking the time to check this out. The MaxError() is 1% ,so is not over the Max Error Limit. I successfully made the CF HIGH by setting the registers to:

    • Time Cycle Equivalent = 6h
    • Cycle Delta = 0.5%

    Could you explain why does the Max Error jumps exactly after the settings are changed? Is is possible to calculate how much the Max Error() will immediately change when changing this settings?

    Regards,

    -Enrique