27.2 Features
- Up to Four External Pins (EXTINTx) Plus One Non-Maskable Pin (NMI)
- Dedicated, Individually Maskable Interrupt for Each Pin
- Interrupt on Rising, Falling or Both Edges
- Synchronous or Asynchronous Edge Detection Mode
- Interrupt Pin Debouncing
- Interrupt on High or Low Levels
- Asynchronous Interrupts for Sleep Modes without Clock
- Filtering of External Pins
- Event Generation from EXTINTx