BQ27531-G1: Bq27531 program df.fs fail

Che yi Su

Part Number: BQ27531-G1
Other Parts Discussed in Thread: BQ27531EVM, BQEVSW, BQSTUDIO

Dear all：
I face a issue which can't re-program Bq27531EVM and my steps as below.

1. Use bqEVSW to program .senc default file and the resault is successful.
2. Use Bqstudio software to program customer's df.fs file. After this step that I can't re-program, it seems Bq27531 latch.

Althought change I2C address 0x16 or 0xaa via bqEVSW software, I read data at "Read I2C Data Block" and show error code=772.

May I have a solution to un-latch Bq27531?

Thanks!

over 7 years ago

0 Onyx Ahiakwo over 7 years ago

TI__Guru* 76230 points

hi Che yi.
Incases like this the chip is usually non recoverable. pls replace your gauge IC or see if you can program the senc again, and then use a bqfs to program the chip instead of a dffs incase you do not know what firmware version was on the chip the customer extracted the dffs from.

thanks
Onyx

0 Che yi Su over 7 years ago in reply to Onyx Ahiakwo

Expert 1695 points

Thanks!

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BQ27531-G1: Bq27531 program df.fs fail