Port pin

Alternate function

P1.0

T2 external count input to timer.counter 2, clock out

P1.1

T2EX timer/counter 2 capture/reload trigger and direction flag

P1.4

/SS Slave port select input

P1.5

MOSI Master data output, slave data input pin for SPI channel

P1.6

MISO Master data input, slave data output pin for SPI channel

P1.7

SCK Master clock output, slave clock input pin for SPI channel

P3.0

RxD serial input port

P3.1

TxD serial output port

P3.2

/INT0 external interrupt 0

P3.3

/INT1 external interrupt 1

P3.4

T0 timer 0 external input

P3.5

T1 timer 1 external input

P3.6

/WR external data memory write strobe

P3.7

/RD external data memory read strobe