BQ27546-G1 Datasheet, PDF (20/38 Pages) Texas Instruments – nullSingle-Cell Li-Ion Battery Fuel Gauge

bq27546-G1
SLUSC53A – MAY 2015 – REVISED DECEMBER 2015
www.ti.com
9.5 Programming
9.5.1 Standard Data Commands
The bq27546-G1 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 7. 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.
COMMAND NAME
Control()
AtRate()
UnfilteredSOC()
Temperature()
Voltage()
Flags()
NomAvailableCapacity()
FullAvailableCapacity()
RemainingCapacity()
FullChargeCapacity()
AverageCurrent()
TimeToEmpty()
FullChargeCapacityFiltered()
SafetyStatus()
FullChargeCapacityUnfiltered()
Imax()
RemainingCapacityUnfiltered()
RemainingCapacityFiltered()
BTPSOC1Set()
BTPSOC1Clear()
InternalTemperature()
CycleCount()
StateofCharge()
StateofHealth()
ChargingVoltage()
ChargingCurrent)
PassedCharge()
DOD0()
SelfDischargeCurrent()
Table 7. Standard Commands
COMMAND CODE
0x00 and 0x01
0x02 and 0x03
0x04 and 0x05
0x06 and 0x07
0x08 and 0x09
0x0A and 0x0B
0x0C and 0x0D
0x0E and 0x0F
0x10 and 0x11
0x12 and 0x13
0x14 and 0x15
0x16 and 0x17
0x18 and 0x19
0x1A and 0x1B
0x1C and 0x1D
0x1E and 0x1F
0x20 and 0x21
0x22 and 0x23
0x24 and 0x25
0x26 and 0x27
0x28 and 0x29
0x2A and 0x2B
0x2C and 0x2D
0x2E and 0x2F
0x30 and 0x31
0x32 and 0x33
0x34 and 0x35
0x36 and 0x37
0x34 and 0x35
UNIT
—
mA
%
0.1°K
mV
—
mAh
mAh
mAh
mAh
mA
min
mAh
—
mAh
mA
mAh
mAh
mAh
mAh
0.1°K
Counts
%
% / num
mV
mA
mAh
hex
mA
SEALED ACCESS
RW
RW
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
RW
RW
R
R
R
R
R
R
R
R
R
9.5.1.1 Control(): 0x00 and 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
bq27546-G1 during normal operation and additional features when the bq27546-G1 is in different access modes,
as described in Table 8.
SUBCOMMAND NAME
CONTROL_STATUS
DEVICE_TYPE
Table 8. Control() Subcommands
SUBCOMMAND
CODE
0x0000
0x0001
SEALED
ACCESS
Yes
Yes
DESCRIPTION
Reports the status of DF Checksum, Impedance Track, and so on
Reports the device type of 0x0541 (indicating bq27546-G1)
20
Submit Documentation Feedback
Product Folder Links: bq27546-G1
Copyright © 2015, Texas Instruments Incorporated