BQ2084-V140_14 Datasheet, PDF (53/64 Pages) Texas Instruments – SBS v1.1-COMPLIANT GAS GAUGE FOR USE WITH THE bq29312

bq2084-V140
www.ti.com
SLUS664B – JULY 2005 – REVISED AUGUST 2006
Cycle Count Initialization
Cycle Count DF 0x0c-0x0d stores the initial value for the CycleCount() function. It should be programmed to
0x0000.
Cycle Count Threshold
Cycle Count Threshold 0x37-0x38 sets the number of mAh that must be removed from the battery to increment
CycleCount(). Cycle Count threshold is a 16-bit value stored in mAh.
Charge Efficiency
The bq2084-V140 applies the efficiency factor, EFF%, to all charge added to the battery. EFF% is encoded in
Charge Efficiency DF 0x54 according to the following equation:
Charge Efficiency = (EFF% w 2.56-1)
PACK OPTIONS
Pack Configuration
Pack Configuration DF 0x28 contains bit-programmable features.
b7
b6
b5
b4
b3
b2
b1
b0
DMODE
LED1
LED0
HPE
CPE
SM
CC1
CC0
DMODE
The DMODE bit determines whether the LED outputs indicate AbsoluteStateOfCharge() or
RelativeStateOfCharge().
0 LEDs reflect AbsoluteStateOfCharge()
1 LEDs reflect RelativeStateOfCharge()
LED1–LED0
The LED bits set the number of LEDs for Remaining Capacity () indication.
0-0 Configures the bq2084-V140 for five LEDs
0-1 Configures the bq2084-V140 for three LEDs
1-0 Configures the bq2084-V140 for four LEDs
1-1 Configures the bq2084-V140 for five LEDs
HPE
The HPE bit enables/disables PEC transmissions to the smart battery host for master mode alarm messages.
0 No PEC byte on alarm warning to host
1 PEC byte on alarm warning to host
CPE
The CPE bit enables/disables PEC transmissions to the smart battery charger for master mode messages.
0 No PEC byte on broadcasts to charger
1 PEC byte on broadcasts to charger
SM
The SM bit enables/disables master mode broadcasts by the bq2084-V140.
0 Broadcasts to host and charger enabled
1 Broadcasts to host and charger disabled
If the SM bit is set, modifications to bits in BatteryMode() do not re-enable broadcasts.
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