STANDARD DATA COMMANDS

bq27541

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. Because

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.

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

Reserved

RSVD

0x28 / 0x29

N/A

R

CycleCount( )

CC

0x2a / 0x2b

Counts

R

StateOfCharge( )

SOC

0x2c / 0x2d

%

R

Copyright © 2008, Texas Instruments Incorporated

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