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BQ27411-G1: BQ27411-G1 Programming OTP using MCU

Namdeo Panore
Prodigy 40 points
Part Number: BQ27411-G1
Other Parts Discussed in Thread: BQ27542-G1, , BQSTUDIO

Hello TI Team,

We were using battery fuel gauge part No: BQ27542-G1 and now since TI is not promoting this part, we got suggessition to use part number BQ27411-G1 which is best fit for BQ27542. However, during our analysis it is observed that the new part (BQ27411-G1) has OTP memory and need to write it with .OTFS file.

Will you please suggest can we write .OTFS file into the OTP memory using host controller(MCU) in production without using SmartFlash sotware. If yes, is there any sample code available to write OTP memory using host controller? And can you please provide us code to integrate in our application.

Aslo, the OTP programming document says that this device need to supply with 7.4V during programming. Please confirm if that is mandatory or any other voltage level which can be used to program the device?

  • 0
    TI__Guru 57697 points

    Hello Mandeo,

    bq27542-G1 is still available for ordering.

    bqStudio can generate an OTFS file for bq27411 that can be used to send commands for programming OTP. The 7.4V programming voltage is required.

  • 0 in reply to Shirish
    Prodigy 40 points

    Is OTFS file similar to .bq.fs file or it is similar to .df.fs file? I am asking this because .bq.fs file contains firmware & configuration for the chip while .df.fs file contains only the configuration. Can you please provide us one sample OTFS file for our review?

     

    Also, can we conclude that sample programming code given for BQ27542 can also be used for programming BQ27411? may be with slight tweaking?

  • 0 in reply to Namdeo Panore
    TI__Guru 57697 points

    OTFS is similar to DFFS in content.

    A DFFS programmer can program OTFS files without changes