BQ2084-V140_14 Datasheet, PDF (56/64 Pages) Texas Instruments – SBS v1.1-COMPLIANT GAS GAUGE FOR USE WITH THE bq29312

bq2084-V140
SLUS664B – JULY 2005 – REVISED AUGUST 2006
VOD
The VOD bit enables a 1-s time delay in the setting of the CVOV and CVUV bits in PackStatus.
0 No delay
1 1-s delay
Misc Configuration (low) DF 0x2b
b7
b6
b5
b4
b3
b2
b1
LEDRCA
PFET1
PFET0
NR
CHGFET
0
0
www.ti.com
b0
DSGOT
LEDRCA
The LEDRCA bit programs the LED to blink when there is a RemainingCapacityAlarm.
0 The LEDs blink when there is a RemainingCapacityAlarm.
1 The LEDs are off when there is a RemainingCapacityAlarm.
PFET1, PFET0
The PFETx bits define the precharge FET operation. See the bq29312 data sheet for more detail.
0,0 The bq29312 ZVCHG FET is turned on for precharge. Assumes charger has precharge function.
0,1 The charge FET is turned on for precharge. Assumes charger has precharge function.
1,0 The bq29312 OD FET is turned on for precharge. Assumes charger does not have precharge function.
1,1 Not defined, unpredictable operation
NR
The NR bit defines whether the bq2084-V140 is to be used with a nonremovable system battery. If set to
indicate a nonremovable system battery there are additional clear conditions for a battery failure due to
overcharge, overcurrent, and overload. The additional conditions besides battery removal (defined as the loss
system present pin going high) are either detection of an opposite current of that caused the failure or when
AverageCurrent() is less than Clear Fail Current DF 0x61, 0x62 for a time defined by Fault Reset Time DF
0x130. Also, for a nonremovable battery the charge FET is left on for discharge current failures and the
discharge FET is left on for charge current failures.
0 Removable battery, battery fail conditions cleared by battery removal only.
1 Nonremovable system battery.
CHGFET
The CHGFET bit programs the charge FET to remain on even after a charge terminate condition.
0 The charge FET is turned off after a charge termination condition.
1 The charge FET is turned on after a charge termination condition.
DSGOT
When this bit is set, it allows the DSG FET to remain on after overtemperature in charge conditions
0 bq2084-V140 turns both FETs off during an overtemperature in charge
1 bq2084-V140 only turns off the CHG FET during overtemperature in charge
Misc Configuration 2 (low byte) (0x139)
b7
b6
b5
0
0
SSTRING
b4
NVCELL
b3
CCDSG
b2
SOCL
b1
CVFC
b0
DEPFET
SSTRING
When this bit is set, it enables an additional 15 characters of storage for both SBS.ManufacturerName( ) and
SBS.DeviceName( ). (Storage is in separate area of data flash)
0 ManufacturerName( ) and DeviceName( ) strings are 11 and 7 characters respectively
56
Submit Documentation Feedback