BQ2060A_15 Datasheet, PDF (11/61 Pages) Texas Instruments – SBS v1.1-Compliant Gas Gauge IC

bq2060A
www.ti.com
SLUS500D – OCTOBER 2001 – REVISED OCTOBER 2011
FUNCTION
AverageTimeToEmpty
AverageTimeToFull
ChargingCurrent
ChargingVoltage
Battery Status
CycleCount
DesignCapacity
DesignVoltage
SpecificationInfo
ManufactureDate
SerialNumber
Reserved
ManufacturerName
DeviceName
DeviceChemistry
ManufacturerData
Pack Status
Pack Configuration
VCELL4
VCELL3
VCELL2
VCELL1
Table 3. bq2060A Register Functions (continued)
COMMAND CODE
SMBus
HDQ16
0x12
0x12
0x13
0x13
0x14
0x14
0x15
0x15
0x16
0x16
0x17
0x17
0x18
0x18
0x19
0x19
0x1a
0x1a
0x1b
0x1b
0x1c
0x1c
0x1d–0x1f
0x1d–0x1f
0x20
0x20–0x25
0x21
0x28–0x2b
0x22
0x30–0x32
0x23
0x38–0x3b
0x2f (LSB)
0x2f (LSB)
0x2f (MSB)
0x2f (MSB)
0x3c
0x3c
0x3d
0x3d
0x3e
0x3e
0x3f
0x3f
SMBus
ACCESS
read
read
read
read
read
read
read
read
read
read
read
–
read
read
read
read
read/write
read/write
read/write
read/write
read/write
read/write
UNITS
minutes
minutes
mA
mV
n/a
cycles
mAh, 10 mWh
mV
n/a
n/a
integer
–
string
string
string
string
n/a
n/a
mV
mV
mV
mV
MAIN GAS GAUGE REGISTERS
RemainingCapacity() (RM)
RM represents the remaining capacity in the battery. The bq2060A computes RM in either mAh or 10 mWh,
depending on the selected mode.
On initialization, the bq2060A sets RM to 0. RM counts up during charge to a maximum value of FCC and down
during discharge and self-discharge to 0. In addition to charge and self-discharge compensation, the bq2060A
calibrates RM at three low-battery-voltage thresholds, EDV2, EDV1, and EDV0 and three programmable
midrange thresholds VOC25, VOC50, and VOC75. This provides a voltage-based calibration to the RM counter.
DesignCapacity() (DC)
The DC is the user-specified battery full capacity. It is calculated from Pack CapacityEE 0x3a–0x3b and is
represented in mAh or 10 mWh. It also represents the full-battery reference for the absolute display mode.
FullChargeCapacity() (FCC)
FCC is the last measured discharge capacity of the battery. It is represented in either mAh or 10 mWh depending
on the selected mode. On initialization, the bq2060A sets FCC to the value stored in Last Measured Discharge
EE 0x38–0x39. During subsequent discharges, the bq2060A updates FCC with the last measured discharge
capacity of the battery. The last measured discharge of the battery is based on the value in the DCR register
after a qualified discharge occurs. Once updated, the bq2060A writes the new FCC value to EEPROM in mAh to
Last Measured Discharge. FCC represents the full battery reference for the relative display mode and relative
state of charge calculations.
Copyright © 2001–2011, Texas Instruments Incorporated
Product Folder Link(s): bq2060A
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