BQ27505-J3 Datasheet, PDF (10/44 Pages) Texas Instruments – System-Side Impedance Track™ Fuel Gauge

bq27505-J3
Not Recommended for New Designs
SLUS986A – OCTOBER 2009 – REVISED FEBRUARY 2010
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4.1 DATA COMMANDS
4.1.1 STANDARD DATA COMMANDS
The bq27505 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 4-1.
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 of Communication.
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 4.4, Access Modes.)
NAME
Control( )
AtRate( )
AtRateTimeToEmpty( )
Temperature( )
Voltage( )
Flags( )
NominalAvailableCapacity( )
FullAvailableCapacity( )
RemainingCapacity( )
FullChargeCapacity( )
AverageCurrent( )
TimeToEmpty( )
TimeToFull( )
StandbyCurrent( )
StandbyTimeToEmpty( )
MaxLoadCurrent( )
MaxLoadTimeToEmpty( )
AvailableEnergy( )
AveragePower( )
TTEatConstantPower( )
StateOfHealth()
StateOfCharge( )
NormalizedImpedanceCal( )
InstaneousCurrent Reading( )
Table 4-1. Standard Commands
CNTL
AR
ARTTE
TEMP
VOLT
FLAGS
NAC
FAC
RM
FCC
AI
TTE
TTF
SI
STTE
MLI
MLTTE
AE
AP
TTECP
SOH
SOC
NIC
ICR
COMMAND CODE
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
0x2c / 0x2d
0x2e / 0x2f
0x30 / 0x31
UNITS
N/A
mA
Minutes
0.1 K
mV
N/A
mAh
mAh
mAh
mAh
mA
Minutes
Minutes
mA
Minutes
mA
Minutes
mWh
mW
Minutes
% / num
%
mohm
mA
SEALED
ACCESS
R/W
R/W
R
R/W
R
R
R
R
R
R
R
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/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
10
GENERAL DESCRIPTION
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