Give the alternate functions for the port pins of port3?
RD - Read data control output.
WR - Write data control output.
T1 - Timer / Counter1 external input or test pin.
T0 - Timer / Counter0 external input or test pin.
INT1- Interrupt 1 input pin.
INT 0 - Interrupt 0 input pin.
TXD - Transmit data pin for serial port in UART mode.
RXD - Receive data pin for serial port in UART mode