BQ27425-G2_14 Datasheet, PDF (8/35 Pages) Texas Instruments – System-Side Impedance Track™ Fuel Gauge With Integrated Sense Resistor

bq27425-G2
SLUSB23A – OCTOBER 2012 – REVISED FEBRUARY 2013
DATA COMMANDS
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Standard Data Commands
The bq27425 uses a series of 2-byte standard commands to enable system reading and writing of battery
information. Each standard command has an associated command-code pair, as indicated in Table 1. Because
each command consists of two bytes of data, two consecutive I²C transmissions must be executed both to
initiate the command function, and to read or write the corresponding two bytes of data. Additional options for
transferring data, such as spooling, are described in Section, I2C INTERFACE. Standard commands are
accessible in NORMAL operation. Read/Write permissions depend on the active access mode, SEALED or
UNSEALED (for details on the SEALED and UNSEALED states, refer to Section Access Modes.)
Note: Data values read by the host may be invalid during initialization for a period of up to 3 seconds.
NAME
Control( )
Temperature( )
Voltage( )
Flags( )
NominalAvailableCapacity( )
FullAvailableCapacity( )
RemainingCapacity( )
FullChargeCapacity( )
AverageCurrent( )
Debug1( )
AveragePower( )
StateOfCharge( )
IntTemperature( )
StateOfHealth( )
Debug2( )
Debug3( )
OperationConfiguration( )
DesignCapacity( )
Table 1. Standard Commands
CNTL
TEMP
VOLT
FLAGS
RM
FCC
SOC
SOH
OpConfig
COMMAND
CODE
0x00 / 0x01
0x02 / 0x03
0x04 / 0x05
0x06 / 0x07
0x08 / 0x09
0x0a / 0x0b
0x0c / 0x0d
0x0e / 0x0f
0x10 / 0x11
0x16 / 0x17
0x18 / 0x19
0x1c / 0x1d
0x1e / 0x1f
0x20 / 0x21
0x2c / 0x2d
0x32 / 0x33
0x3a / 0x3b
0x3c / 0x3d
UNITS
N/A
0.1°K
mV
N/A
mAh
mAh
mAh
mAh
mA
num
mW
%
0.1°K
%
num
num
N/A
mAh
SEALED ACCESS
R/W
R/W
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
8
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