DATA COMMANDS

Standard Data Commands

bq27510

The bq27510 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. Read/Write permissions depend on the active access mode, SEALED or

UNSEALED (for details on the SEALED and UNSEALED states, refer to Section Access Modes.)

Table 1. Standard Commands

NAME

COMMAND CODE

UNITS

SEALED

UNSEALED

ACCESS

ACCESS

Control( )

CNTL

0x00 / 0x01

N/A

R/W

R/W

AtRate( )

AR

0x02 / 0x03

mA

R/W

R/W

AtRateTimeToEmpty( )

ARTTE

0x04 / 0x05

Minutes

R

R/W

Temperature( )

TEMP

0x06 / 0x07

0.1K

R

R/W

Voltage( )

VOLT

0x08 / 0x09

mV

R

R/W

Flags( )

FLAGS

0x0a / 0x0b

N/A

R

R/W

NominalAvailableCapacity( )

NAC

0x0c / 0x0d

mAh

R

R/W

FullAvailableCapacity( )

FAC

0x0e / 0x0f

mAh

R

R/W

RemainingCapacity( )

RM

0x10 / 0x11

mAh

R

R/W

FullChargeCapacity( )

FCC

0x12 / 0x13

mAh

R

R/W

AverageCurrent( )

AI

0x14 / 0x15

mA

R

R/W

TimeToEmpty( )

TTE

0x16 / 0x17

Minutes

R

R/W

TimeToFull( )

TTF

0x18 / 0x19

Minutes

R

R/W

StandbyCurrent( )

SI

0x1a / 0x1b

mA

R

R/W

StandbyTimeToEmpty( )

STTE

0x1c / 0x1d

Minutes

R

R/W

MaxLoadCurrent( )

MLI

0x1e / 0x1f

mA

R

R/W

MaxLoadTimeToEmpty( )

MLTTE

0x20 / 0x21

Minutes

R

R/W

AvailableEnergy( )

AE

0x22 / 0x23

mWhr

R

R/W

AveragePower( )

AP

0x24 / 0x25

mW

R

R/W

TTEatConstantPower( )

TTECP

0x26 / 0x27

Minutes

R

R/W

Reserved

RSVD

0x28 / 0x29

N/A

R

R/W

CycleCount( )

CC

0x2a / 0x2b

Counts

R

R/W

StateOfCharge( )

SOC

0x2c / 0x2d

%

R

R/W

Control(): 0x00/0x01

Issuing a Control( ) command requires a subsequent 2-byte subcommand. These additional bytes specify the

particular control function desired. The Control( ) command allows the system to control specific features of the

bq27510 during normal operation and additional features when the bq27510 is in different access modes, as

described in Table 2.

Table 2. Control( ) Subcommands

CNTL FUNCTION

CNTL DATA

SEALED

DESCRIPTION

ACCESS

CONTROL_STATUS

0x0000

Yes

Reports the status of DF Checksum, Hibernate, IT, etc.

DEVICE_TYPE

0x0001

Yes

Reports the device type (bq27510)

FW_VERSION

0x0002

Yes

Reports the firmware version on the device type

HW_VERSION

0x0003

Yes

Reports the hardware version of the device type

DF_CHECKSUM

0x0004

No

Enables a data flash checksum to be generated and reports on a read

8

Submit Documentation Feedback

Copyright © 2008, Texas Instruments Incorporated

Product Folder Link(s): bq27510