— 13 —(2) Non-port pins (1/2)Pin NameINTP0INTP1INTP2INTP3INTP4INTP5SI0SI1SI2SO0SO1SO2SB0SB1SCK0SCK1SCK2STBBUSYRxD0RxD1TxD0TxD1ASCKTI00TI01TI1TI2TO0TO1TO2PCLBUZRTP0 to RTP7I/OI/OI/OOutputI/OI/OOutputInputInputOutputInputInputOutputOutputOutputOutpuFunctionExternal interrupt request inputs with specifiablevalid edges (rising edge, falling edge, both rising andfalling edges).Serial interface serial data inputSerial interface serial data outputSerial interface serial data input/outputSerial interface serial clock input/outputSerial interface automatic transmit/receive strobeoutputSerial interface automatic transmit/receive busy inputAsynchronous serial interface serial data inputAsynchronous serial interface serial data outputAsynchronous serial interface serial clock inputExternal count clock input to 16-bit timer (TM0)Capture trigger signal input to capture register (CR00)External count clock input to 8-bit timer (TM1)External count clock input to 8-bit timer (TM2)16-bit timer (TM0) output (also used for 14-bit PWMoutput)8-bit timer (TM1) output8-bit timer (TM2) outputClock output (for main system clock and subsystemclock trimming)Buzzer outputReal-time output port outputting data insynchronization with triggerAfter ResetInputInputInputInputInputInputInputInputInputInputInputInputInputInputAlternate FunctionP00/TI00P01/TI01P02P03P04P05P25/SB0P20P70/RxDP26/SB1P21P71/TxDP25/SI0P26/SO0P27P22P72/ASCKP23/TxD1P24/RxD1P70/SI2P24/BUSYP71/SO2P23/STBP72/SCK2P00/INTP0P01/INTP1P33P34P30P31P32P35P36P120 to P127