BQ2063_15 Datasheet, PDF (37/60 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
command codes (continued)
CycleCount( )(0x17); [0x17]
Description: Returns the number of cycles the battery has experienced. The mAh value of each count is
determined by programming the Cycle Count Threshold value in EE 0x3c-0x3d. The bq2063 saves the cycle
count value to Cycle Count EE 0x0e-0x0f after an update to CycleCount( ).
Purpose: The CycleCount( ) function provides a means to determine the battery’s wear. It may be used to give
advance warning that the battery is nearing its end of life.
SMBus Protocol: Read Word
Output: Unsigned integer-count of total charge removed from the battery over its life.
Units: cycle
Range: 0 to 65,534 cycles; 65,535 indicates battery has experienced 65,535 or more cycles.
Granularity: 1 cycle
Accuracy: absolute count
DesignCapacity( ) (0x18); [0x18]
Description: Returns the theoretical or nominal capacity of a new pack. The DesignCapacity( ) value is
expressed in either current (mAh at a C/5 discharge rate) or power, (10 mWh at a P/5 discharge rate) depending
on the setting of the BatteryMode( ) CAPACITY_MODE bit.
Purpose: The DesignCapacity( ) function is used by the SMBus Host’s power management in conjunction with
FullChargeCapacity( ) to determine battery wear. The power management system may present this information
to the user and also adjust its power policy as a result.
SMBus Protocol: Read Word
Output: Unsigned integer-battery capacity in mAh or 10 mWh.
Units
Range
Granularity
Accuracy
BATTERY MODES
CAPACITY_MODE
BIT = 0
CAPACITY_MODE
BIT = 1
mAh
10 mWh
0–65,535 mAh
0–65,535 10 mWh
Not applicable
Not applicable
DesignVoltage( ) (0x19); [0x19]
Description: Returns the theoretical voltage of a new pack (mV). The bq2063 sets DesignVoltage( ) to the
value programmed in Design Voltage EE0x12-0x13.
Purpose: The DesignVoltage( ) function can be used to give additional information about a particular Smart
Battery’s expected terminal voltage.
SMBus Protocol: Read Word
Output: Unsigned integer-the battery’s designed terminal voltage in mV
Units: mV
Range: 0 to 65,535 mV
Granularity: not applicable
Accuracy: not applicable
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