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CCS/BQ27542-G1: bq27542-G1 UNSEAL FULL ACCESS fail

user4315302
Prodigy 250 points
Part Number: BQ27542-G1

Tool/software: Code Composer Studio

first do UNSEAL,it is OK.but when do  UNSEAL FULL ACCESS operate，it is failure.

there are not all the battery do UNSEAL FULL ACCESS operate fail,there is a few battery do UNSEAL FULL ACCESS operate fail,it is about 1%.

What causes it?

How to solve it?

thank you.

  • 0
    TI__Guru 52115 points

    After you click the UNSEAL_FULL_ACCESS button,  does the FAS bit become 0?  Remember to click the Refresh button.

    One thing you can try is to program the default srec file to the failing device and check if the device can go to FULL ACCESS mode.

    Andy