12.1 Features

  • All Clocks and Clock Sources Are Automatically Enabled When Requested by Peripherals
  • Internal Oscillators:
    • Up to 20 MHz Internal High-Frequency Oscillator (OSCHF)
    • 32.768 kHz Ultra-Low Power Oscillator (OSC32K)
  • Auto-Tuning for Improved Internal Oscillator Accuracy
  • External Clock Options:
    • 32.768 kHz Crystal Oscillator (XOSC32K)
    • External clock input
  • Main Clock Features:
    • Fuse-selectable start-up clock source
    • Safe run-time switching
    • System clock output to I/O pin
    • Prescaler with a division factor ranging from 1 to 64
    • Status bit for observing when clock switching is complete