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BQ27541-V200_1007 Datasheet(PDF) 9 Page - Texas Instruments

Part # BQ27541-V200_1007
Description  Single Cell Li-Ion Battery Fuel Gauge for Battery Pack Integration
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
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SLUSA11 – FEBRUARY 2010
DATA COMMANDS
STANDARD DATA COMMANDS
The bq27541 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. Each
protocol has specific means to access the data at each Command Code. DataRAM is updated and read by the
gauge only once per second. Standard commands are accessible in NORMAL operation mode.
Table 1. Standard Commands
NAME
COMMAND CODE
UNITS
SEALED
ACCESS
Control( )
CNTL
0x00 / 0x01
N/A
R/W
AtRate( )
AR
0x02 / 0x03
mA
R/W
AtRateTimeToEmpty( )
ARTTE
0x04 / 0x05
Minutes
R
Temperature( )
TEMP
0x06 / 0x07
0.1K
R
Voltage( )
VOLT
0x08 / 0x09
mV
R
Flags( )
FLAGS
0x0a / 0x0b
N/A
R
NominalAvailableCapacity( )
NAC
0x0c / 0x0d
mAh
R
FullAvailableCapacity( )
FAC
0x0e / 0x0f
mAh
R
RemainingCapacity( )
RM
0x10 / 0x11
mAh
R
FullChargeCapacity( )
FCC
0x12 / 0x13
mAh
R
AverageCurrent( )
AI
0x14 / 0x15
mA
R
TimeToEmpty( )
TTE
0x16 / 0x17
Minutes
R
TimeToFull( )
TTF
0x18 / 0x19
Minutes
R
StandbyCurrent( )
SI
0x1a / 0x1b
mA
R
StandbyTimeToEmpty( )
STTE
0x1c / 0x1d
Minutes
R
MaxLoadCurrent( )
MLI
0x1e / 0x1f
mA
R
MaxLoadTimeToEmpty( )
MLTTE
0x20 / 0x21
Minutes
R
AvailableEnergy( )
AE
0x22 / 0x23
10 mWhr
R
AveragePower( )
AP
0x24 / 0x25
10 mW
R
TTEatConstantPower( )
TTECP
0x26 / 0x27
Minutes
R
Internal_Temp( )
INTTEMP
0x28 / 0x29
0.1°K
R
CycleCount( )
CC
0x2a / 0x2b
Counts
R
StateOfCharge( )
SOC
0x2c / 0x2d
%
R
StateOfHealth( )
SOH
0x2e / 0x2f
% / num
R
PassedCharge( )
PCHG
0x34 / 0x35
mAh
R
DOD0( )
DOD0
0x36 / 0x37
HEX#
R
Copyright © 2010, Texas Instruments Incorporated
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