BQ2084-V140_14 Datasheet, PDF (46/64 Pages) Texas Instruments – SBS v1.1-COMPLIANT GAS GAUGE FOR USE WITH THE bq29312

bq2084-V140
SLUS664B – JULY 2005 – REVISED AUGUST 2006
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EDV2
The EDV2 bit indicates that pack or cell voltage (program option) is less than the EDV2 threshold.
0 Voltage > EDV2 threshold (discharging)
1 Voltage = EDV2 threshold
SS
The SS bit indicates the seal state of the bq2084-V140.
0 The bq2084-V140 is in the unsealed state.
1 The bq2084-V140 is in the sealed state.
AFEFAIL
The AFEFAIL bit indicates that AFE communications has failed.
0 AFE communications are okay.
1 AFE communications have failed.
VDQ
The VDQ bit indicates if the present discharge cycle is valid for an FCC update.
0 Discharge cycle not valid
1 Discharge cycle valid
PF
The PF bit indicates that the bq2084-V140 PF Flag has been set. It is cleared only when the PF Flag has been
cleared.
0 bq2084-V140 PF Flag = 0x00
1 bq2084-V140 PF Flag = 0x66
CVOV
The CVOV bit indicates that a protection limit has been exceeded including Prolonged Overcurrent,
Overvoltage, or Overtemperature conditions. The bit is not latched and merely reflects the present fault status.
0 No secondary protection limits exceeded
1 A secondary protection limit exceeded
CVUV
The CVUV bit indicates that a protection limit has been exceeded including overload or overdischarge
conditions. The bit is not latched and merely reflects the present fault status.
0 No secondary protection limits exceeded
1 A secondary protection limit exceeded
VCELL4-VCELL1 (0x3c-0x3f)
These functions return the calculated individual cell voltages in mV. If NVCELL is set in Misc Configuration 2
then the SMBus commands are changed to 0x38-0x3b). The alternative commands are NACK'ed when not
selected.
DATA FLASH
General
The bq2084-V140 accesses the internal data flash during reset and when storing historical data. The data flash
stores basic configuration information for use by the bq2084-V140. The data flash must be programmed
correctly for proper bq2084-V140 operation.
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