Clocking Structure

  • High-Precision Internal Oscillator Block (HFINTOSC):
    • Selectable frequencies up to 64 MHz
    • ±1% at calibration
    • Active Clock Tuning of HFINTOSC for better accuracy
  • 31 kHz Low-Power Internal Oscillator (LFINTOSC)
  • External 32 kHz Crystal Oscillator (SOSC)
  • External High-Frequency Oscillator Block:
    • Three crystal/resonator modes
    • Digital Clock Input mode
    • 4x PLL with external sources
  • Fail-Safe Clock Monitor:
    • Allows for operational recovery if external clock stops
  • Oscillator Start-up Timer (OST):
    • Ensures stability of crystal oscillator sources