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BQ76952: How to perform selective OTP using bqStudio

Kyungjae Lee
Intellectual 425 points
Part Number: BQ76952
Other Parts Discussed in Thread: BQSTUDIO

Tool/software:

Hi,

Is there a way to perform OTP for the data memory registers of my choice?

Or is it that when I press the "Program Data Memory to OTP Memory" button on bqStudio all values of the data memory registers will get written to the OTP memory?

I thought the following thread might be relevant, but wanted to double-check.

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1190999/bq76952-using-bqstudio-to-partially-program-otp

Thank you,

Kyungjae Lee

  • +1
    TI__Expert 8560 points

    Hello Kyungjae,

    Kyungjae Lee said:
    Or is it that when I press the "Program Data Memory to OTP Memory" button on bqStudio all values of the data memory registers will get written to the OTP memory?

    Yes, that is correct. As mentioned in the previous forum you found, all the data memory registers that have been modified will get written to OTP memory and will use one of the eight signatures.

    Best Regards,
    Alexis

  • 0 in reply to Alexis_H
    Intellectual 425 points

    Thank you for confirming Alexis,

    I see when I first open the bqStudio, not all data memory register values that appear on the "Data Memory" window seem to reflect what's actually stored in the actual data memory registers until you press the "Read All" button.

    To make sure that I OTP program only the registers I have changed, shall I "Read All" first to make sure all the values on the "Data Memory" window are refreshed, change the value I want to OTP program, and then perform the OTP programming?

    Thank you,

    Kyungjae

  • +1 in reply to Kyungjae Lee
    TI__Expert 8560 points

    Hello Kyungjae,

    Kyungjae Lee said:
    To make sure that I OTP program only the registers I have changed, shall I "Read All" first to make sure all the values on the "Data Memory" window are refreshed, change the value I want to OTP program, and then perform the OTP programming?

    Yes, that would be a good idea to make sure every register has been updated to show what has been changed.

    Best Regards,
    Alexis