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8
During the charging operation, CHARGE CONTROL IC9501 outputs the status signals shown in Table.3-2 to MAIN SYSTEM CONTROLLER IC1003. And also, the status
signal from pin-3[STAT1] of IC9501 is used for the ON/OFF control signal of the diode (Charging LED) inside the USB Adaptor.
Table.3-2 Status signal
IC9501 Pin-3 [STAT1]
IC9501 Pin-4 [STAT2]
Status
Open
Open
Error Status
Battery is not connected
Detecting the abnormal temperature
Detecting the timer fault
Etc.
L
Open
When charging
Open
L
When the charging operation terminates
Table.3-3 Monitoring the charging operation by MAIN SYSTEM CONTROLLER IC1003
IC1003 Pin-148 [PQ2]
IC1003 Pin-149 [PQ3]
Status
L
H
Error Status
Battery is not connected
Detecting the abnormal temperature
Detecting the timer fault
Etc.
H
H
When charging
L
L
When the charging operation terminates
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