Data Sheet

bq27441-G1

www.ti.com

SLUSBH1C –NOVEMBER 2013–REVISED DECEMBER 2014

9.4 Device Functional Modes

To minimize power consumption, the fuel gauge has several power modes: INITIALIZATION, NORMAL, SLEEP,

and HIBERNATE. The fuel gauge passes automatically between these modes, depending upon the occurrence

of specific events, though a system processor can initiate some of these modes directly. More details are found

in the bq27441-G1 Technical Reference Manual (SLUUAC9).

9.5 Programming

9.5.1 Standard Data Commands

The fuel gauge 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

each command consists of two bytes of data, two consecutive I

C transmissions must be executed both to

initiate the command function, and to read or write the corresponding two bytes of data. Additional details are

found in the bq27441-G1 Technical Reference Manual (SLUUAC9).

Table 1. Standard Commands

NAME COMMAND UNIT SEALED ACCESS

CODE

Control() CNTL 0x00 and 0x01 NA RW

Temperature() TEMP 0x02 and 0x03 0.1°K RW

Voltage() VOLT 0x04 and 0x05 mV R

Flags() FLAGS 0x06 and 0x07 NA R

NominalAvailableCapacity() 0x08 and 0x09 mAh R

FullAvailableCapacity() 0x0A and 0x0B mAh R

RemainingCapacity() RM 0x0C and 0x0D mAh R

FullChargeCapacity() FCC 0x0E and 0x0F mAh R

AverageCurrent() 0x10 and 0x11 mA R

StandbyCurrent() 0x12 and 0x13 mA R

MaxLoadCurrent() 0x14 and 0x15 mA R

AveragePower() 0x18 and 0x19 mW R

StateOfCharge() SOC 0x1C and 0x1D % R

InternalTemperature() 0x1E and 0x1F 0.1°K R

StateOfHealth() SOH 0x20 and 0x21 num / % R

RemainingCapacityUnfiltered() 0x28 and 0x29 mAh R

RemainingCapacityFiltered() 0x2A and 0x2B mAh R

FullChargeCapacityUnfiltered() 0x2C and 0x2D mAh R

FullChargeCapacityFiltered() 0x2E and 0x2F mAh R

StateOfChargeUnfiltered() 0x30 and 0x31 % R

TrueRemainingCapacity() 0x6A and 0x6B mAh R

Product Folder Links: bq27441-G1