Datasheet

bq34z100

www.ti.com

SLUSAU1B –MAY 2012–REVISED DECEMBER 2012

Table 3. Control() Subcommands (continued)

CNTL FUNCTION CNTL DATA SEALED ACCESS DESCRIPTION

Returns the instantaneous current measured by the

CURRENT 0x0018 Yes

gauge

SEALED 0x0020 No Places the device in SEALED access mode

IT_ENABLE 0x0021 No Enables the Impedance Track algorithm

CAL_ENABLE 0x002D No Toggle calibration mode

RESET 0x0041 No Forces a full reset of the bq34z100

EXIT_CAL 0x0080 No Exit calibration mode

ENTER_CAL 0x0081 No Enter calibration mode

OFFSET_CAL 0x0082 No Reports internal CC offset in calibration mode

CONTROL_STATUS: 0x0000

Instructs the fuel gauge to return status information to Control addresses 0x00/0x01. The status word includes

the following information.

Table 4. CONTROL_STATUS Flags

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

High Byte — FAS SS CALMODE CCA BCA CSV —

Low Byte — — FULLSLEEP SLEEP LDMD RUP_DIS VOK QEN

FAS: Status bit that indicates the bq34z100 is in FULL ACCESS SEALED state. Active when set.

SS: Status bit that indicates the bq34z100 is in the SEALED State. Active when set.

CSV: Status bit that indicates a valid data flash checksum has been generated. Active when set.

CALMODE: Status bit that indicates the bq34z100 calibration function is active. True when set.

Default is 0.

CCA: Status bit that indicates the bq34z100 Coulomb Counter Calibration routine is active. Active

when set.

BCA: Status bit that indicates the bq34z100 Board Calibration routine is active. Active when set.

FULLSLEEP: Status bit that indicates the bq34z100 is in FULLSLEEP mode. True when set. The state

can only be detected by monitoring the power used by the bq34z100 because any

communication will automatically clear it.

SLEEP: Status bit that indicates the bq34z100 is in SLEEP mode. True when set.

LDMD: Status bit that indicates the bq34z100 Impedance Track algorithm using constant-power

mode. True when set. Default is 0 (constant-current mode).

RUP_DIS: Status bit that indicates the bq34z100 Ra table updates are disabled. True when set.

VOK: Status bit that indicates cell voltages are OK for Qmax updates. True when set.

QEN: Status bit that indicates the bq34z100 Qmax updates are enabled. True when set.

DEVICE TYPE: 0x0001

Instructs the fuel gauge to return the device type to addresses 0x00/0x01.

FW_VERSION: 0x0002

Instructs the fuel gauge to return the firmware version to addresses 0x00/0x01.

HW_VERSION: 0x0003

Instructs the fuel gauge to return the hardware version to addresses 0x00/0x01.

Product Folder Links: bq34z100