PS810 查看數據表（PDF） - Microchip Technology
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PS810 Datasheet PDF : 46 Pages
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PS810
TABLE 4-3: CAPACITY MONITORING PARAMETERS
Parameter
Name
# of
Bytes
Units
Typical
Value
Operational Description
DesignCapacity 2
RemCap
2
NullCurr
1
PwrConsumption 1
ClrFullyChrg
1
ConfigCAP
1
mAh
mAh
mA
1/256 mA
%
bitmap
2200 Battery data value for DesignCapacity. This is the first capacity
loaded into the FullChargeCapacity upon power-up.
440 The initial capacity of the battery. When the PS810 is first
powered up and initialized, before a learning cycle takes place
to learn the full capacity, the full capacity will take the value
programmed into RemCap to compute relative
State-Of-Charge percentage.
3 A zero zone control is built into the PS810 so that any electrical
noise doesn’t actually drain the gas gauge, when in fact, the
current is zero. For this reason, current less than NullCurr mA
in either direction will be measured as zero.
31 Current consumption of the battery module. This is the average
current that the battery module typically draws from the battery
(255 = 1 mA).
90 Reset FULLY_CHARGED bit at this level, 100 = 100%. When
discharging begins, the FULLY_CHARGED bit must remain set
until the cell voltages are below EOCVolt, so that a small
current will not trigger a false End-Of-Charge trigger. Thus,
ClrFullyChrg is set at about 90%. FULLY_CHARGED bit will
be on until the battery has discharged to less than 90%.
11100100 bit 7:
Compensate remaining capacity – the displayed remaining
capacity actually equals FCC minus capacity used minus
residual capacity.
bit 6:
Remaining capacity decrease only – when compensating, if
temperature changed causing a decrease in residual capacity,
do not let remaining capacity rise to reflect this. Instead, hold it
steady until discharge catches up.
bit 5:
Only compensate on discharge.
bit 4:
Compensate on null current.
bit 3:
Unused.
bit 2:
Set capacity to positive immediately upon charging. If
discharged below zero, this allows capacity to count up
immediately upon charging.
bit 1:
Learn unconditionally – relearn FCC under any conditions.
Typically used for testing only.
bit 0:
Disable self-discharge.
DS21904C-page 16
© 2006 Microchip Technology Inc.
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