BQ2060SS Datasheet, PDF (32/59 Pages) Texas Instruments – SBS V1.1-COMPLIANT GAS GAUGE IC

bq2060
SLUS035E – JANUARY 2000 – REVISED OCTOBER 2005
0x8000
0x4000
0x2000
0x1000
0x0800
0x0400
0x0200
0x0100
0x0080
0x0040
0x0020
0x0010
0x0007
0x0006
0x0005
0x0004
0x0003
0x0002
0x0001
0x0000
ALARM BITS
OVER_CHARGED_ALARM
TERMINATE_CHARGE_ALARM
reserved
OVER_TEMP_ALARM
TERMINATE_DISCHARGE_ALARM
reserved
REMAINING_CAPACITY_ALARM
REMAINING_TIME_ALARM
STATUS BITS
INITIALIZED
DISCHARGING
FULLY_CHARGED
FULLY_DISCHARGED
ERROR CODES
Unknown Error
BadSize
Overflow/Underflow
AccessDenied
UnsupportedCommand
ReservedCommand
Busy
OK
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Alarm Bits
OVER_CHARGED_ALARM bit is set whenever the bq2060 detects that the battery is being charged beyond the
Maximum Overcharge limit. This bit is cleared when the bq2060 detects that the battery is no longer being
charged (i.e., the bq2060 detects discharge activity or no activity for the digital filter timeout periods. The digital
filter timeout period (seconds) equates to 10 times the value shared in Digital Filter EE0x52.)
TERMINATE_CHARGE_ALARM bit is set when the bq2060 detects that one or more of the battery’s charging
parameters are out of range (e.g., its voltage, current, or temperature is too high) or when the bq2060 detects a
primary charge termination. This bit is cleared when the parameter falls back into the allowable range, the
termination condition ceases, or when the bq2060 detects that the battery is no longer being charged.
OVER_TEMP_ALARM bit is set when the bq2060 detects that the internal battery temperature is greater than or
equal to the MaxT limit. This bit is cleared when the internal temperature falls back into the acceptable range.
TERMINATE_DISCHARGE_ALARM bit is set when the bq2060 detects that Voltage() is less than EDV0 or
when the CVUV bit in Pack Status is set indicating that a Li-ion cell voltage has dropped below the limit
programmed in Cell Under / Over Voltage. The bit is cleared when Voltage() is greater than EDV0 or when the
CVUV bit is cleared.
REMAINING_CAPACITY_ALARM bit is set when the bq2060 detects that RemainingCapacity() is less than that
set by the RemainingCapacityAlarm() function. This bit is cleared when either the value set by the
RemainingCapacityAlarm() function is lower than the RemainingCapacity() or when the RemainingCapacity() is
increased by charging.
REMAINING_TIME_ALARM bit is set when the bq2060 detects that the estimated remaining time at the present
discharge rate is less than that set by the RemainingTimeAlarm() function. This bit is cleared when either the
value set by the RemainingTimeAlarm() function is lower than the AverageTimeToEmpty() or when the
AverageTimeToEmpty() is increased by charging.
Status Bits
INITIALIZED bit is set when the bq2060 is has detected a valid load of EEPROM. It is cleared when the bq2060
detects an improper EEPROM load.
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