BQ27531-G1 Datasheet, PDF (10/21 Pages) Texas Instruments – Battery Management Unit Impedance Track Fuel Gauge for Use With the bq2419x Charger Controller

bq27531-G1
SLUSBE7 – MARCH 2013
DATA COMMANDS
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STANDARD DATA COMMANDS
The bq27531-G1 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 2. 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 details are
found in the bq27531-G1 Technical Reference Manual.
Table 2. Standard Commands
NAME
COMMAND CODE
Control( )
AtRate( )
AtRateTimeToEmpty( )
Temperature( )
Voltage( )
Flags( )
NominalAvailableCapacity( )
FullAvailableCapacity( )
RemainingCapacity( )
FullChargeCapacity( )
AverageCurrent( )
TimeToEmpty( )
RemainingCapacityUnfiltered( )
StandbyCurrent( )
RemainingCapacityFiltered( )
ProgChargingCurrent( )
ProgChargingVoltage( )
FullChargeCapacityUnfiltered( )
AveragePower( )
FullChargeCapacityFiltered( )
StateOfHealth( )
CycleCount( )
StateOfCharge( )
TrueSOC( )
InstantaneousCurrentReading( )
InternalTemperature( )
ChargingLevel( )
LevelTaperCurrent( )
CalcChargingCurrent( )
CalcChargingVoltage( )
0x00 / 0x01
0x02 / 0x03
0x04 / 0x05
0x06 / 0x07
0x08 / 0x09
0x0a / 0x0b
0x0c / 0x0d
0x0e / 0x0f
0x10 / 0x11
0x12 / 0x13
0x14 / 0x15
0x16 / 0x17
0x18 / 0x19
0x1a / 0x1b
0x1c / 0x1d
0x1e / 0x1f
0x20 / 0x21
0x22 / 0x23
0x24 / 0x25
0x26 / 0x27
0x28 / 0x29
0x2a / 0x2b
0x2c / 0x2d
0x2e / 0x2f
0x30 / 0x31
0x32 / 0x33
0x34 / 0x35
0x6e / 0x6f
0x70 / 0x71
0x72 / 0x73
(1) Only writeable when Charger Options [BYPASS] is set.
UNITS
N/A
mA
Minutes
0.1 K
mV
N/A
mAh
mAh
mAh
mAh
mA
Minutes
mAh
mA
mAh
mA
mV
mAh
mW
mAh
% / num
Counters
%
%
mA
0.1 K
HEX
mA
mA
V
SEALED
ACCESS
R/W
R/W
R
R/W
R
R
R
R
R
R
R
R
R
R
R
R ⁽¹⁾
R ⁽¹⁾
R
R
R
R
R
R
R
R
R
R
R
R
R
UNSEALED
ACCESS
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R ⁽¹⁾
R ⁽¹⁾
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
10
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