We observed already on two of our BQ20Z45 equipped batteries a Data Flash Failure (DFF). Unfortunately, this happend in the field after the batteries were already working properly. So the batteries were OK before and then something caused this DFF. The datasheet explaings following posible causes:
False flash checksum after reset, data flash write not verified, data flash erase not verified.
None of these makes sense for our application since neither it will be written to the Data Flash in the field nor a reset wil be issued in the field.
What else could cause a DFF?
Regards,
Patrick