PRODUCT OVERVIEW S3C84BB/F84BBTable 1-1. S3C84BB/F84BB Pin Descriptions (80-QFP) (Continued)PinNamePinTypePinDescriptionCircuitTypePinNumberSharePinsAD0 - AD7 I Analog input pins for A/D converter module.Alternatively used as general-purpose digitalinput port 7.E 48–4542–39P7.0–P7.7AVREF, AVSS - A/D converter reference voltage and ground - 43, 44 -RxD0, RxD1 I/O Serial data RxD pin for receive input andtransmit output (mode 0)D 18, 21 P5.3, P5.1TxD0, TxD1 O Serial data TxD pin for transmit output andshift clock input (mode 0)D 20, 22 P5.2, P5.0TACK I External clock input pins for timer A D 3 P2.5TACAP I Capture input pins for timer A D 2 P2.6TAOUT O Pulse width modulation output pins for timer A D 1 P2.7TBPWM O Carrier frequency output pins for timer B D 4 P2.4TCOUT0TCOUT1O Timer C 8-bit PWM mode output or countermatch toggle output pinsD 24,23 P3.6,P3.7T1CK0T1CK1I External clock input pins for timer 1 D 39,30 P3.0,P3.1T1CAP0T1CAP1I Capture input pins for timer 1 D 28,27 P3.2,P3.3T1OUT0T1OUT1O Timer 1 16-bit PWM mode output or countermatch toggle output pinsD 26,25 P3.4,P3.5SI,SO,SCK I/O Synchronous SIO pins D 7,8,9 P2.1,P2.0,P2.2RESETB I System reset pin (pull-up resistor: 240 kΩ) B 19 -TEST I Pull – down register connected internally - 16 -VDD1, VDD2,VSS1, VSS2- Power input pins - 12,53,13,52-XIN, XOUT - Main oscillator pins - 15,14 -AVR330 harman/kardon92