13.8.OTHERS
13.8.1.I/OTerminal
-TheInputterminalhastwosystems;bothofthemareconnectedtothe
InputPortoftheIC103GPIO.
-DuetoInternalPull-upResistance,thePNPTransistor(Q504,Q503)on
thefollowinglevelisusuallyintheOFFstateandtheInputPort
connectedtothecollectorisatLlevel.
-Iftheterminalisshort-circuitedwiththeGNDorthesignalofLlevelis
input,thePNPTransistorgoesONandtheInputPortgoestoHlevel.
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