4.1 DATA COMMANDS

4.1.1

STANDARD DATA COMMANDS

bq27500-V120

System-Side Impedance Track™ Fuel Gauge

www.ti.com

SLUS880 – OCTOBER 2008

The bq27500 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.

executed both to initiate the command function, and to read or write the corresponding two bytes of data.

Standard commands are accessible in NORMAL operation.

Table 4-1. 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

0.1 K

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

mWh

R

AveragePower( )

AP

0x24 / 0x25

mW

R

TimeToEmptyAtConstantPower( )

TTECP

0x26 / 0x27

Minutes

R

Reserved

RSVD

0x28 / 0x29

N/A

R

CycleCount( )

CC

0x2a / 0x2b

Counts

R

StateOfCharge( )

SOC

0x2c / 0x2d

%

R

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GENERAL DESCRIPTION

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