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WATCH DOG
It is possible that battery is overcharged if charger
stops operation by keeping on charging port by
external impact.
To avoid it, timer (U3-B) is prepared and MPU is
forced to be reset if MPU dosen't clear timer until a
specified time is elapsed.
Samsung Electronics
DISCHARGE CIRCUIT
Discharging battery is available in the rear port
and initiated once pin 22 of MPU acknowledges
the depression of discharge switch.
Discharging is controlled by pin 6 of MPU and
stops operation once the voltage is reached to
1V/cell and automatically starts charging routine.
Circuit Description
4-11
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