18.1 Features

  • General Purpose Input and Output Pins with Individual Configuration:
    • Pull-up
    • Inverted I/O
    • Input voltage threshold
  • Interrupts and Events:
    • Sense both edges
    • Sense rising edges
    • Sense falling edges
    • Sense low level
  • Optional Slew Rate Control per I/O Port
  • Asynchronous Pin Change Sensing That Can Wake the Device From All Sleep Modes
  • Efficient and Safe Access to Port Pins
    • Hardware Read-Modify-Write (RMW) through dedicated toggle/clear/set registers
    • Mapping of often-used PORT registers into bit-accessible I/O memory space (virtual ports)