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Original question:

BQ78350-R1: About BQ78350-R1 how to recovery from Permanent Fail ??

BQ78350-R1: bq78350-r1

bms studio
Prodigy 80 points
Part Number: BQ78350-R1
Other Parts Discussed in Thread: BQSTUDIO

Hi Sir 

what is the use of seal mode and what is the advantage of it.

  • 0
    TI__Guru* 77343 points

    Hi,

    Sealed mode is described in the BQ78350-R1 Technical Reference Manual. It is used to secure the battery so that someone cannot change the settings who does not know the passcode to unseal the device. Here is the description from the manual:

    The Seal Device command instructs the device to limit access to the SBS functions and data flash space
    and sets the [SEC1][SEC0] flags. In SEALED mode, standard SBS functions have access per the Smart
    Battery Data Specification. Extended SBS functions and data flash are not accessible.

    Best regards,

    Matt

  • 0 in reply to Matt Sunna
    Prodigy 80 points

    Hii  sir

    how to solve this problem?

  • 0 in reply to bms studio
    TI__Guru* 77343 points

    Are you still able to communicate with the device? Try to cycle power on the EVM and restart BQStudio and re-try this.

    Matt

  • 0 in reply to Matt Sunna
    Prodigy 80 points

    what is meant by cycle power on the EVM.

  • 0 in reply to bms studio
    TI__Guru* 77343 points

    Cycle power - turn power to the EVM off and on. Are you applying power to the EVM BAT+ and BAT- terminals?

  • 0 in reply to Matt Sunna
    Prodigy 80 points

    Hii sir

    we already cycle powered the EVM but still the error exists. How can we contact  local FAE in india since we are facing many issues regarding this project and unable to complete the job from 2months.

    will be very thankful if you can provide their contact info or email id. or else any local TI sales representative info in india.

    thank you  

  • 0 in reply to bms studio
    TI__Guru* 77343 points

    Hi, 

    I am also working with Pavani on a different question which may be related. The other question is about why the cell voltages are not updating. 

    If the cell voltages are not updating and the device cannot enter ROM mode, they device may have been damaged. I suggest replacing the IC because it is not behaving normally.

    I'm sorry, I cannot help you find FAE support - please contact your distributor or local TI sales office. E2E is not the place to request local support.

    Best regards,

    Matt