PS401-I/SS Microchip Technology, PS401-I/SS Datasheet - Page 20

• Manufacturer Part Number: PS401-I/SS
• Description: IC FUEL GAUGE BATTERY MGR 28SSOP
• Manufacturer: Microchip Technology

Specifications of PS401-I/SS

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PS401
7.1.15
Returns the predicted remaining battery capacity
expressed as a percentage of DesignCapacity (%).
Note that AbsoluteStateOfCharge can return values
greater than 100%.
7.1.16
Returns the predicted remaining battery capacity. The
RemainingCapacity value is expressed in either current
(mAh) or power (10 mWh), depending on the setting of
the BatteryMode's CAPACITY_MODE bit.
7.1.17
Returns the predicted pack capacity when it is fully
charged. It is based on either current or power,
depending on the setting of the BatteryMode's
CAPACITY_MODE bit.
7.1.18
Returns the predicted remaining battery life at the
present rate of discharge (minutes). The RunTime-
ToEmpty value is calculated based on either current or
power, depending on the setting of the BatteryMode's
CAPACITY_MODE bit. This is an important distinction
because use of the wrong Calculation mode may result
in inaccurate return values.
7.1.19
Returns a one-minute rolling average of the predicted
remaining battery life (minutes). The AverageTime-
ToEmpty value is calculated based on either current or
power, depending on the setting of the BatteryMode's
CAPACITY_MODE bit. This is an important distinction
because use of the wrong Calculation mode may result
in inaccurate return values.
7.1.20
Returns a one-minute rolling average of the predicted
remaining time until the Smart Battery reaches full
charge (minutes).
7.1.21
Sets the maximum charging current for the Smart
Charger to charge the battery. This can be written to the
Smart Charger from the Smart Battery, or requested by
the Smart Charger from the battery.
DS40238B-page 20
AbsoluteStateOfCharge (0x0e)
RemainingCapacity (0x0f)
FullChargeCapacity (0x10)
RunTimeToEmpty (0x11)
AverageTimeToEmpty (0x12)
AverageTimeToFull (0x13)
ChargingCurrent (0x14)
7.1.22
Sets the maximum charging voltage for the Smart
Charger to charge the battery. This can be written to the
Smart Charger from the Smart Battery, or requested by
the Smart Charger from the battery.
7.1.23
Returns the Smart Battery's status word (flags). Some
of
CAPACITY_ALARM and REMAINING_TIME_ALARM,
are calculated based on either current or power,
depending on the setting of the BatteryMode's
CAPACITY_MODE bit. This is important because use
of the wrong Calculation mode may result in an
inaccurate alarm. The BatteryStatus function is used by
the power management system to get alarm and status
bits, as well as error codes from the Smart Battery. This
is basically the same information returned by the
SBData AlarmWarning function, except that the
AlarmWarning function sets the Error Code bits all high
before sending the data.
Battery Status Bits:
The Host system assumes responsibility for detecting
and responding to Smart Battery alarms by reading
the BatteryStatus to determine if any of the alarm bit
flags are set. At a minimum, this requires the system to
poll the Smart Battery BatteryStatus every 10 seconds
at all times the SMBus is active.
7.1.24
CycleCount is updated to keep track of the total usage
of the battery. CycleCount is increased whenever an
amount of charge has been delivered to, or removed
from, the battery equivalent to the full capacity.
the
bit 15:
bit 14:
bit 13:
bit 12:
bit 11:
bit 10:
bit 9:
bit 8:
bit 7:
bit 6:
bit 5:
bit 4:
BatteryStatus
ChargingVoltage (0x15)
BatteryStatus (0x16)
CycleCount (0x17)
OVER_CHARGED_ALARM
TERMINATE_CHARGE_ALARM
Reserved
OVER_TEMP_ALARM
TERMINATE_DISCHARGE_ALARM
Reserved
REMAINING_CAPACITY_ALARM
REMAINING_TIME_ALARM
INITIALIZED
DISCHARGING
FULLY_CHARGED
FULLY_DISCHARGED
 2003 Microchip Technology Inc.
flags,
like
REMAINING_