BQ34Z100 Datasheet, PDF (10/50 Pages) Texas Instruments – Wide Range Fuel Gauge with Impedance Track™ Technology

bq34z100
SLUSAU1 – MAY 2012
DATA COMMANDS
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STANDARD DATA COMMANDS
The bq34z100 uses a series of 2-byte standard commands to enable host reading and writing of battery
information. Each standard command has an associated command-code pair, as indicated in Table 2. Because
each command consists of two bytes of data, two consecutive HDQ/I²C transmissions must be 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. Also, two block commands are available to read Manufacturer Name and
Device Chemistry. Read/Write permissions depend on the active access mode.
NAME
Control()
StateOfCharge()
RemainingCapacity()
FullChargeCapacity()
Voltage()
AverageCurrent()
Temperature()
Flags()
Mfr Date
Mfr Name Length
Mfr Name
Device Chemistry
Length
Device Chemistry
Serial Number
CNTL
SOC
RM
FCC
VOLT
AI
TEMP
FLAGS
DATE
NAMEL
NAME
CHEML
CHEM
SERNUM
Table 2. Standard Commands
COMMAND CODE
0x00 / 0x01
0x02 / 0x03
0x04 / 0x05
0x06 / 0x07
0x08 / 0x09
0x0a / 0x0b
0x0c / 0x0d
0x0e / 0x0f
0x6B / 0x6c
0x6d
0x6e – 0x78
0x79
0x7a – 0x7d
0x7e / 0x7f
UNITS
N/A
%
mAh
mAh
mV
mA
0.1ºK
N/A
N/A
N/A
N/A
N/A
N/A
N/A
SEALED ACCESS
R/W
R
R
R
R
R
R
R
R
R
R
R
R
R
UNSEALED
ACCESS
R/W
R
R
R
R
R
R
R
R
R
R
R
R
R
Control(): 0x00/0x01
Issuing a Control() command requires a subsequent two-byte sub-command. These additional bytes specify the
particular control function desired. The Control() command allows the host to control specific features of the
bq34z100 during normal operation, and additional features when the bq34z100 is in different access modes, as
described in Table 3.
CNTL FUNCTION
CONTROL_STATUS
DEVICE_TYPE
FW_VERSION
HW_VERSION
RESET_DATA
PREV_MACWRITE
CHEM_ID
BOARD_OFFSET
CC_OFFSET
CC_OFFSET_SAVE
DF_VERSION
SET_FULLSLEEP
STATIC_CHEM_CHKSUM
Table 3. Control() Subcommands
CNTL DATA
0x0000
0x0001
0x0002
0x0003
0x0005
0x0007
0x0008
0x0009
0x000A
0x000B
0x000C
0x0010
0x0017
SEALED ACCESS
Yes
Yes
Yes
Yes
No
No
Yes
No
No
No
Yes
No
Yes
DESCRIPTION
Reports the status of DF Checksum, IT, for example.
Reports the device type of 0x0541 (indicating
bq34z100)
Reports the firmware version on the device type
Reports the hardware version of the device type
Returns reset data
Returns previous MAC command code
Reports the chemical identifier of the Impedance Track
configuration
Forces the device to measure and store the board offset
Forces the device to measure the internal CC offset
Forces the device to store the internal CC offset
Reports the data flash version on the device
Set the [FULLSLEEP] bit in the control register to 1
Calculates chemistry checksum
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