BQ27421-G1 Datasheet, PDF (11/20 Pages) Texas Instruments – System-Side Impedance Track™ Fuel Gauge With Integrated Sense Resistor

bq27421-G1
www.ti.com
SLUSB85 – MAY 2013
Control( ): 0x00/0x01
Issuing a Control( ) command requires a subsequent 2-byte subcommand. These additional bytes specify the
particular control function desired. The Control( ) command allows the system to control specific features of the
bq27421-G1 during normal operation and additional features when the device is in different access modes, as
described in . Additional details are found in the bq27421-G1 Technical Reference Manual (SLUUAC5).
CNTL FUNCTION
CONTROL_STATUS
DEVICE_TYPE
FW_VERSION
DM_CODE
PREV_MACWRITE
CHEM_ID
BAT_INSERT
BAT_REMOVE
SET_HIBERNATE
CLEAR_HIBERNATE
SET_CFGUPDATE
SHUTDOWN_ENABLE
SHUTDOWN
TOGGLE_GPOUT
SEALED
RESET
SOFT_RESET
CNTL DATA
0x0000
0x0001
0x0002
0x0004
0x0007
0x0008
0x000c
0x000d
0x0011
0x0012
0x0013
0x001b
0x001c
0x0023
0x0020
0x0041
0x0042
Table 2. Control( ) Subcommands
SEALED ACCESS
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
Yes
No
No
No
DESCRIPTION
Reports the status of device.
Reports the device type (0x0421).
Reports the firmware version of the device.
Reports the Data Memory Code number stored in NVM.
Returns previous MAC command code.
Reports the chemical identifier of the Impedance Track™ configuration
Forces the [BAT_DET] bit set when the [BIE] bit is 0.
Forces the [BAT_DET] bit clear when the [BIE] bit is 0.
Forces CONTROL_STATUS [HIBERNATE] to 1.
Forces CONTROL_STATUS [HIBERNATE] to 0.
Force CONTROL_STATUS [CFGUPMODE] to 1 and gauge enters
CONFIG UPDATE mode.
Enables device SHUTDOWN mode.
Commands the device to enter SHUTDOWN mode.
Commands the device to toggle the GPOUT pin for 1ms.
Places the device in SEALED access mode.
Performs a full device reset.
Gauge exits CONFIG UPDATE mode.
Refer to the bq27421-G1 Technical Reference Manual for detailed descriptions for the Standard Data
Commands and Control( ) subcommands.
Copyright © 2013, Texas Instruments Incorporated
Product Folder Links: bq27421-G1
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