SLUUBT5C November 2018 – June 2021 BQ40Z80
The BQ40Z80 device detects the BATTERY PACK REMOVED mode if the [NR] bit is set to 0 AND the PRES input is high ([PRES] = 0).
On entry to the BATTERY PACK REMOVED mode, the [TCA] and [TDA] flags are set, ChargingCurrent() and ChargingVoltage() are set to 0, the CHG and DSG FETs are turned off, and the precharge FET is turned off (if used).
Polling of the PRES pin continues at a rate of once every 1 s.
The BQ40Z80 exits the BATTERY PACK REMOVED state if the [NR] flag is set to 0 AND the PRES input is low ([PRES] = 1). When this occurs, the [TCA] and [TDA] flags are reset.