Panasonic KX-HCM110A

-TheCPUchecksthestateofthisportregularlytodetectachangeinthis
signal.
-TheOutputterminaliscontrolledbytheOutputPortoftheIC103.When
thePortoutputisL,thetransistor(Q501)onthefollowinglevelisOFF
and,whentheoutputisH,thetransistorisON.Thistransistorhasopen
collectoroutputanditcontrolsexternalequipmentviaexternalpull-up.
13.8.2.ClearSettingSW
-TheClearSettingSW(SW101)isconnectedtotheInputPortofthe
GPIO.ItisusuallyatHlevelandgoestoLlevel,whentheSWis
pressed.
-TheCPUmonitorsthisInputPortregularlyand,ifitdetectsthatthisSW
ispressedlongerthanaspecifiedperiod,thesettingvaluesotherthan
theRTCarereturnedtofactorysettings.
13.8.3.LED
-TheLED(LED601)hastwo-colorLEDs(redandgreen).Whenthe
transistor(Q601,Q602)connectedtoeachLEDisturnedON/OFFvia
theOutputPortoftheIC103,itcontrolstheON/OFFoftheLED.
14.TERMINALGUIDEOFICS,TRANSISTORSAND
DIODES
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