BQ2060SS Datasheet, PDF (25/59 Pages) Texas Instruments – SBS V1.1-COMPLIANT GAS GAUGE IC

bq2060
www.ti.com
Units
Charge Range
Discharge Range
Granularity
Accuracy
SLUS035E – JANUARY 2000 – REVISED OCTOBER 2005
BATTERY MODES
CAPACITY_MODE
bit = 0
CAPACITY_MODE
bit = 1
mA
10 mW
1 to 32,767 mA
1 to 32,768 10 mW
–1 to –32,768 mA –1 to –32,768 10 mW
1 Unit
NA
AtRateTimeToFull() (0x05);[0x05]
DESCRIPTION
Returns the predicted remaining time to fully charge the battery at the AtRate( ) value (mA).
PURPOSE
The AtRateTimeToFull() function is part of two-function call-set used to determine the predicted
remaining charge time at the AtRate value in mA. The bq2060 updates AtRateTimeToFull() within
1.3 s after the SMBus Host sets the AtRate value. If read before this delay, the command is No
Acknowledged and the error code in BatteryStatus is set to not ready. The bq2060 automatically
updates AtRateTimeToFull() based on the AtRate() value every 20 s.
SMBus PROTOCOL ReadWord
OUTPUT
Unsigned integer—predicted time in minutes to fully charge the battery.
Units: minutes
Range: 0 to 65,534 min
Granularity: 2 min or better
Accuracy: ±MaxError() *
FullChargeCapacity()/|AtRate()|
Invalid Data Indication: 65,535 indicates the battery is not being charged.
AtRateTimeToEmpty() (0x06); [0x06]
DESCRIPTION
Returns the predicted remaining operating time if the battery is discharged at the AtRate() value.
PURPOSE
The AtRateTimeToEmpty() function is part of a two-function call-set used to determine the
remaining operating time at the AtRate()value. The bq2060 updates AtRateTimeToEmpty() within
1.3s after the SMBus Host sets the AtRate() value. If read before this delay, the command is No
Acknowledged, and the error code in BatteryStatus is set to not ready. The bq2060 automatically
updates AtRateTimeToEmpty() based on the AtRate() value every 20s.
SMBus PROTOCOL ReadWord
OUTPUT
Unsigned integer—estimated operating time left.
Units: minutes
Granularity: 2 min or better
Range: 0 to 65,534 min
Accuracy: –0, +MaxError()
FullChargeCapacity/|AtRate()|
Invalid Data Indication: 65,535 indicates the battery is not being charged.
25