BQ27741-G1_14 Datasheet, PDF (21/39 Pages) Texas Instruments – Single Cell Li-Ion Battery Fuel Gauge with Integrated Protection

bq27741-G1
www.ti.com
SLUSBF2 – JULY 2013
Control( ): 0x00 and 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
fuel gauge during normal operation and additional features when the fuel gauge is in different access modes, as
described in Table 5.
CNTL FUNCTION
CONTROL_STATUS
DEVICE_TYPE
FW_VERSION
HW_VERSION
PROTECTOR_VERSION
RESET_DATA
Reserved
PREV_MACWRITE
CHEM_ID
BOARD_OFFSET
CC_OFFSET
CC_OFFSET_SAVE
DF_VERSION
SET_FULLSLEEP
SET_SHUTDOWN
CLEAR_SHUTDOWN
SET_HDQINTEN
CLEAR_HDQINTEN
STATIC_CHEM_CHKSUM
ALL_DF_CHKSUM
STATIC_DF_CHKSUM
SEALED
IT_ENABLE
START_FET_TEST
CAL_ENABLE
RESET
EXIT_CAL
ENTER_CAL
OFFSET_CAL
Table 5. Control( ) Subcommands
CNTL DATA
0x0000
0x0001
0x0002
0x0003
0x0004
0x0005
0x0006
0x0007
0x0008
0x0009
0x000A
0x000B
0x000C
0x0010
0x0013
0x0014
0x0015
0x0016
0x0017
0x0018
0x0019
0x0020
0x0021
0x0024
0x002D
0x0041
0x0080
0x0081
0x0082
SEALED
ACCESS
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
DESCRIPTION
Reports the status of DF Checksum, Impedance Track™, etc.
Reports the device type of 0x0741 (indicating bq27741-G1)
Reports the firmware version on the device type
Reports the hardware version of the device type
Reports the hardware version of the protector portion of the device
Returns reset data
Not to be used
Returns previous Control( ) subcommand code
Reports the chemical identifier of the Impedance Track™ configuration
Forces the device to measure and store the board offset
Forces the device to measure internal CC offset
Forces the device to store the internal CC offset
Reports the data flash version on the device
Sets the CONTROL_STATUS [FULLSLEEP] bit to 1
Sets the CONTROL_STATUS [SHUTDN_EN] bit to 1
Clears the CONTROL_STATUS [SHUTDN_EN] bit to 0
Forces the CONTROL_STATUS [HDQIntEn] bit to 1
Forces the CONTROL_STATUS [HDQIntEn] bit to 0
Calculates chemistry checksum
Reports checksum for all data flash excluding device specific variables
Reports checksum for static data flash excluding device specific variables
Places the fuel gauge in SEALED access mode
Enables the Impedance Track™ algorithm
Starts FET Test based on data entered in FET Test register. Sets and clears
the [FETTST] bit in CONTROL_STATUS register
Toggle calibration mode
Forces a full reset of the fuel gauge
Exit calibration mode
Enter calibration mode
Reports internal CC offset in calibration mode
Copyright © 2013, Texas Instruments Incorporated
Product Folder Links: bq27741-G1
Submit Documentation Feedback
21