SLUUB65B May 2015 – December 2022
Data flash can only be updated if Voltage() ≥ Flash Update OK Voltage. It is critical that data flash is not updated when the battery voltage is too low. Data flash programming takes much more current than normal operation of the gauge, and with a depleted battery, this current can cause the battery voltage to drop dramatically, forcing the gauge into reset before completing a data flash write. The effects of an incomplete data flash write can corrupt the memory, resulting in unpredictable and extremely undesirable results. The voltage setting in Flash Update OK Voltage prevents any writes to the data flash below this value. If a charger is detected, then Flash Update OK Voltage is ignored.
Ensure that Flash Update OK Voltage is set to a voltage where the battery has plenty of capacity to support data flash writes but below any normal battery operation conditions.
Subclass ID | Subclass | Offset | Name | Data Type | Value | Unit | ||
---|---|---|---|---|---|---|---|---|
Min | Max | Default | ||||||
68 | Power | 0 | Flash Update OK Voltage | I2 | 0 | 5000 | 2800 | mV |