BQ4050: BQ4050 MAXERROR

user44411751

Intellectual 940 points

Part Number: BQ4050
Other Parts Discussed in Thread: BQ3060

In advanced comm SMB, MAXERROR value change to 2 is unsuccessful.Register address OC.

BQ4050 can modify FCC value, but can't modify MAXERROR value.Is that right?

over 7 years ago

0 Batt over 7 years ago

TI__Mastermind 42535 points

Maxerror can't be written unless you are sealed. Was your gauge sealed?

0 user44411751 over 7 years ago in reply to Batt

Intellectual 940 points

All operations in unseal,we can chage FCC value,only not chage MAXERROR value.

0 Batt over 7 years ago in reply to user44411751

TI__Mastermind 42535 points

Please allow me until Tuesday to get an evm and check this out for you.

0 Batt over 7 years ago in reply to Batt

TI__Mastermind 42535 points

I checked it out on the evm. Maxerror is not writable. It still only change on learning after a cycle. On reset it will change to 100%.

0 user44411751 over 7 years ago in reply to Batt

Intellectual 940 points

I know this,but BQ3060 and SN8765 maxerror is writable.BQ4050 is application in the low-end market,many customers are not to learning,so they will change this value directly.

0 Batt over 7 years ago in reply to user44411751

TI__Mastermind 42535 points

I just checked it again and it's not writable. We have referred it to the fw engineers to see if this needs to be changed. But that would involve a fw release which might be a far lengthier process. As of now, it is not a writable register.

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BQ4050: BQ4050 MAXERROR