BQ2063_15 Datasheet, PDF (25/60 Pages) Texas Instruments – SBS v1.1-COMPLIANT Li-ION GAS-GAUGE IC

Not Recommended For New Designs
bq2063
SBS v1.1ĆCOMPLIANT LiĆION GASĆGAUGE IC
WITH PROTECTOR INTERFACE
SLUS468E− MAY 2001 − REVISED APRIL 2002
RemainingCapacityAlarm( ) (0x01); [0x01]
Description: Sets or gets the low-capacity threshold value. Whenever the RemainingCapacity( ) falls below
the low capacity value, the bq2063 sends AlarmWarning( ) messages to the SMBus Host with the
REMAINING_CAPACITY_ALARM bit set. A low-capacity value of 0 disables this alarm. The bq2063 initially
sets the low-capacity value to Remaining Capacity Alarm value programmed in EE 0x04−0x05. The
low-capacity value remains unchanged until altered by the RemainingCapacityAlarm( ) function. The
low-capacity value may be expressed in either current (mA) or power (10 mWh) depending on the setting of the
BatteryMode( ) CAPACITY_MODE bit.
Purpose: The RemainingCapacityAlarm( ) function can be used by systems that know how much power they
require to save their operating state. It enables those systems to more finely control the point at which they
transition into suspend or hibernate state. The low-capacity value can be read to verify the value in use by the
bq2063’s low capacity alarm.
SMBus Protocol: Read or Write Word
Input/Output: Unsigned integer-value below which Low Capacity messages are sent.
Units
Range
Granularity
Accuracy
BATTERY MODES
CAPACITY_MODE
BIT = 0
CAPACITY_MODE
BIT = 1
mAh at C/5
10 mWh at P/5
0–65,535 mAh
0–65,535 10 mWh
Not applicable
See RemainingCapacity( )
Description: Sets or gets the remaining time alarm value. Whenever the AverageTimeToEmpty( ) falls below
the remaining time value, the bq2063 sends AlarmWarning( ) messages to the SMBus Host with the
REMAINING_TIME_ALARM bit set. A remaining time value of 0 effectively disables this alarm. The bq2063
initially sets the remaining time value to the Remaining Time Alarm value programmed in EE 0x02−0x03. The
remaining time value remains unchanged until altered by the RemainingTimeAlarm( ) function.
Purpose: The RemainingTimeAlarm( ) function can be used by systems that want to adjust when the remaining
time alarm warning is sent. The remaining time value can be read to verify the value in use by the bq2063
RemainingTimeAlarm( ).
SMBus Protocol: Read or Write Word
Input/Output: Unsigned integer—the point below which remaining time messages are sent.
Units: minutes
Range: 0 to 65,535 minutes
Granularity: Not applicable
Accuracy: see AverageTimeToEmpty( )
BatteryMode( ) (0x03); [0x03]
Description: Selects the various battery operational modes and reports the battery’s mode and requests.
Defined modes include
D Whether the battery’s capacity information is specified in mAh or 10 mWh (CAPACITY_MODE bit)
D Whether the ChargingCurrent( ) and ChargingVoltage( ) values are broadcast to the Smart Battery Charger
when the bq2063 detects the battery requires charging (CHARGER_MODE bit)
D Whether all broadcasts to the Smart Battery Charger and Host are disabled
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