BQ2063_15 Datasheet, PDF (41/60 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
SOV
The SOV bit indicates that the safety output limits have been exceeded. Once set, the FLAG stays set until the
bq2063 is reset.
0 Safety limits not exceeded
1 Safety limits exceeded
CVOV
The CVOV bit indicates that a secondary Li-Ion protection limit has been exceeded. It is set on a prolonged
overcurrent, overvoltage, or overtemperature condition. The bit is not latched and merely reflects the present
overvoltage status.
0 No secondary protection limits exceeded
1 A secondary protection limit exceeded
CVUV
The CVUV bit indicates that a secondary Li-Ion protection limit has been exceeded. It is set on an overload or
over-discharge condition. The bit is not latched and merely reflects the present undervoltage status.
0 No secondary protection limits exceeded
1 A secondary protection limit exceeded
VCELL4-VCELL1 (0x3c-0x3f); [0x3c-0x3f]
These functions return the calculated individual cell voltages in mV.
EEPROM
general
The bq2063 accesses the external EEPROM during reset and when storing historical data. During an EEPROM
access, the VOUT pin becomes active and the bq2063 uses the ESCL and ESDA pins to communicate with
the EEPROM. The EEPROM stores basic configuration information for use by the bq2063. The EEPROM must
be programmed correctly for proper bq2063 operation.
memory map
Table 12 shows the memory map for the EEPROM. It contains example data for a 3s3p Li-Ion battery pack with
a 0.05-Ω sense resistor.
Table 10. EEPROM Memory Map
EEPROM ADDRESS
NAME
Li-ION EXAMPLE
DATA
MSB LSB
0x00
0x01
Check Byte 1
15487
3c
7f
0x02
0x03
Remaining Time Alarm
10 minutes
00
0a
0x04
0x05
Remaining Capacity Alarm
400 mAh
01
90
0x06
EDV C1 Factor
0
00
0x07
EDV TC Factor
0
00
0x08
Safety Overtemperature
75°C
c3
0x09
Reserved
0
00
0x0a
0x0b
Charging Voltage
12600 mV
31
38
NOTE: Reserved locations must be set as shown. Locations marked with an * are calibration values that can be
adjusted for maximum accuracy. For these locations the table shows the appropriate default or initial setting.
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