SLUSAT1B March 2013 – March 2020 BQ27510-G3
The fuel gauge has different power modes: BAT INSERT CHECK, NORMAL, SNOOZE, SLEEP, and HIBERNATE. In NORMAL mode, the fuel gauge is fully powered and can execute any allowable task. In SNOOZE mode, both low-frequency and high-frequency oscillators are active. Although the SNOOZE mode has higher current consumption than the SLEEP mode, it is also a reduced-power mode. In SLEEP mode, the fuel gauge turns off the high-frequency oscillator and exists in a reduced-power state, periodically taking measurements and performing calculations. In HIBERNATE mode, the fuel gauge is in a low-power state, but can be woken up by communication or certain IO activity. Finally, the BAT INSERT CHECK mode is a powered up, but low-power halted, state, where the fuel gauge resides when no battery is inserted into the system.