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BQ28Z610: I can't write Data Flash

Hong Tam Le
Prodigy 120 points
Part Number: BQ28Z610

Hi.

I design a custom BQ28z610 board. I use MCU to communicate with BQ28z610 via I2C bus. It works Ok.

I can read/write Standard Command and AltManufacturerAccess Command.

I can read Data flash via AltManufacturerAccess Command but I can't write new data to Data Flash. New Data don't update to Data Flash.

I read  Operation Status 0x0054 via  AltManufacturerAccess Command and know that the device is Full Access mode.

I have no Battery Fuel Gauge Evaluation.

How do I write to BQ28z610's Data Flash without Battery Fuel Gauge Evaluation?

Thanks.

Tam.