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BQ78350-R2-DEVICE-FW: Time since last charge

LOIC REBOUSSIN
Expert 1620 points

Part Number: BQ78350-R2-DEVICE-FW

Hi everybody !

I have right a valid charge termination but the Time since last charge found in lifetime counter never grown. Do you have a sugest for activate this counter ?

Regards,

Loic

  • 0
    TI__Guru* 81034 points

    Hi Loic,

    Chapter 10 of the BQ78350-R1 TRM has the following description of when Lifetime flash is updated. It is not updated often.

    The data is collected in
    RAM and only written to DF under the following conditions to avoid wear out of the data flash:

    • Every 10 hours if RAM content is different from flash.
    • In permanent fail, before data flash updates are disabled.
    • Before scheduled shutdown
    • Before low voltage shutdown

    The lifetime data stops collecting under following conditions:

    • After permanent fail
    • Lifetime Data Collection is disabled by setting ManufacturingStatus[LF_EN] = 0.

    Hopefully this explains what you are seeing,

    Matt