BQ28400PWR Datasheet, PDF (16/24 Pages) Texas Instruments – Tablet PC and Netbook 2-Series Cell Li-Ion Battery Gas Gauge and Protection

bq28400
SLUSA61A – OCTOBER 2010 – REVISED DECEMBER 2010
COMMUNICATIONS
The bq28400 uses SMBus v1.1 in Slave Mode per the SBS specification.
SBS Commands
SBS
Command
0x00
0x03
0x08
0x09
0x0a
0x0b
0x0c
0x0d
0x0f
0x10
0x14
0x15
0x16
0x17
0x18
0x19
0x1a
0x1b
0x1c
0x20
0x21
0x22
0x23
0x2f
0x3e
0x3f
Mode
R/W
R/W
R
R
R
R
R
R
R/W
R
R
R
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
Table 1. SBS COMMANDS
Name
ManufacturerAccess
BatteryMode
Temperature
Voltage
Current
AverageCurrent
MaxError
RelativeStateOfCharge
RemainingCapacity
FullChargeCapacity
ChargingCurrent
ChargingVoltage
BatteryStatus
CycleCount
DesignCapacity
DesignVoltage
SpecificationInfo
ManufactureDate
SerialNumber
ManufacturerName
DeviceName
DeviceChemistry
ManufacturerData
Authenticate
CellVoltage2
CellVoltage1
Format
H2
H2
U2
U2
I2
I2
U1
U1
U2
U2
U2
U2
U2
U2
U2
U2
H2
U2
H2
S12
S8
S5
S9
S21
U2
U2
Min Value
0x0000
0x0000
0
0
–32768
–32768
0
0
0
0
0
0
0x0000
0
0
0
0x0000
—
0x0000
—
—
—
—
—
0
0
Max Value
0xffff
0xe383
65535
65535
32767
32767
100
100
65535
65535
65534
65534
0xdbff
65535
65535
65535
0xffff
—
0xffff
—
—
—
—
—
65535
65535
Default
Value
—
—
—
—
—
—
—
—
—
7200
2500
12600
—
0
7200
10800
0x0031
0
0x0001
Texas Inst.
bq28400
LION
—
—
—
—
www.ti.com
Unit
0.1°K
mV
mA
mA
%
%
mAh or 10
mWh
mAh
mA
mV
mAh
mV
ASCII
ASCII
ASCII
ASCII
ASCII
ASCII
mV
mV
Extended SBS Commands
Table 2 shows the extended SBS commands for the device.
SBS
Cmd
0x61
0x63
0x64
0x65
0x66
Mode
R/W
R/W
R/W
R/W
R/W
Table 2. Extended SBS Commands
Name
FullAccessKey
AuthenKey3
AuthenKey2
AuthenKey1
AuthenKey0
Format
Size in
Min Value Max Value
Default
Unit
Bytes
Value
hex
4
0x00000000 0xffffffff
—
hex
4
0x00000000 0xffffffff
—
hex
4
0x00000000 0xffffffff
—
hex
4
0x00000000 0xffffffff
—
hex
4
0x00000000 0xffffffff
—
16
Copyright © 2010, Texas Instruments Incorporated
Product Folder Link(s): bq28400