Other Parts Discussed in Thread: BQ76940, BQ78350, BQSTUDIO, GPCCEDV
Dear,
In our design, we are using a CEDV Li-Ion Gas Gauge and Battery Management Controller BQ78350-R1 coupled with bq76940 Monitor Family which is managing 14S cells. And we need your assessment:
First, we need a help to generate a golden file and to adjust different calibrations (Cell Voltage, courant….etc) for production process? any procedure, datasheet, either an example is welcome!
Secondly, when a permanent fail (PF) arises, we need to know how to erase it and to know if it’s secure to do so, especially for a production process?
Lastly, how to set a Packet Error (PEC) Checking on BQ78350, and how to set the PEC calculation ? (The datasheet is not so clear)
Notices:
The datasheet (Literature Number: SLUUAN7B July 2014–Revised June 2015), indicates (page 112):
- That when 0x0024 is written to ManufacturerAccess() when ManufacturingStatus()[PF_EN] = 0, then the Permanent Failure feature is enabled and ManufacturingStatus()[PF_EN] is set to 1. If 0x0024 is written to ManufacturerAccess() once again, then the Permanent Failure feature is disabled and ManufacturingStatus()[PF_EN] is cleared to 0.
- This command resets PF data in data flash for ease of manufacturing. When 0x0029 is written to ManufacturerAccess(), the Permanent Failure data stored in data flash is cleared.
Best Regards,