BQ27620-G1 Datasheet, PDF (13/45 Pages) Texas Instruments – System-Side Impedance Track™ Fuel Gauge

bq27620-G1
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SLUSAE3 – OCTOBER 2012
4.1.1.1.8 BAT_INSERT: 0X000D
This command is to force the BAT_DET bit to be set when the battery insertion detection is disabled.
When the BIE is set to 0, the battery insertion detection is disabled. The gauge relies on the host to inform
the battery insertion with this command to set the BAT_DET bit.
4.1.1.1.9 BAT_REMOVE: 0X000E
This command is to force the BAT_DET bit to be clear when the battery insertion detection is disabled.
When the BIE is set to 0, the battery insertion detection is disabled. The gauge relies on the host to inform
it of the battery removal with this command to clear the BAT_DET bit.
4.1.1.1.10 SET_HIBERNATE: 0x0011
Instructs the fuel gauge to force the CONTROL_STATUS [HIBERNATE] bit to 1. This will allow the gauge
to enter the HIBERNATE power mode after the transition to SLEEP power state is detected. The
[HIBERNATE] bit is automatically cleared upon exiting from HIBERNATE mode.
4.1.1.1.11 CLEAR_HIBERNATE: 0x0012
Instructs the fuel gauge to force the CONTROL_STATUS [HIBERNATE] bit to 0. This prevents the gauge
from entering the HIBERNATE power mode after the transition to the SLEEP power state is detected. It
can also be used to force the gauge out of HIBERNATE mode.
4.1.1.1.12 DF_VERSION: 0x001F
Instructs the fuel gauge to return the 16-bit data flash revision code to addresses 0x00/0x01. The code is
stored inData Flash Version and provides a simple method for the customer to control data flash
revisions. The default DF_VERSION is 0x0000.
4.1.1.1.13 SEALED: 0x0020
Instructs the fuel gauge to transition from the UNSEALED state to the SEALED state. The fuel gauge must
always be set to the SEALED state for use in end equipment.
4.1.1.1.14 OPTIMIZ: 0x0030
This MAC command should be issued at the end of full charge cycle before the full discharge cycle
begins. This command will set bit 0 (OPTMIZ) of the Control/Status register. When the bit is set and the
gauge detects discharge it will stop using estimated current for Q measurement. Instead it will use
DataFlash IT.LearnCurrent and accumulate charge using that current until discharge termination is
detected from the current estimation engine. At that point the current used by the gauge defaults to zero
mA. This command is only available when the fuel gauge is UNSEALED.
4.1.1.1.15 RESET: 0x0041
This command instructs the fuel gauge to perform a full reset. This command is only available when the
fuel gauge is UNSEALED.
4.1.1.2 AtRateTimeToEmpty( ): 0x04/0x05
This read-word function returns an unsigned integer value of the predicted remaining operating time if the
battery is discharged at the AtRate( ) value in minutes with a range of 0 to 65,534. A value of 65,535
indicates AtRate( ) = 0. The fuel gauge updates AtRateTimeToEmpty( ) within 1 s after the system sets the
AtRate( ) value. The fuel gauge automatically updates AtRateTimeToEmpty( ) based on the AtRate( )
value every 1 s. Both the AtRate( ) and AtRateTimeToEmpty( ) commands must only be used in NORMAL
mode.
Copyright © 2012, Texas Instruments Incorporated
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GENERAL DESCRIPTION
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