Clocking Structure

• High-Precision Internal Oscillator Block (HFINTOSC):
  • Selectable frequencies up to 32 MHz
  • ±2% at calibration
  • Active Clock Tuning of HFINTOSC for improved accuracy
• Internal 31 kHz Oscillator (LFINTOSC)
• External 32 kHz Secondary Oscillator (SOSC)
• External High-Frequency Clock Input:
  • Three Crystal/Resonator modes
  • Two External Clock (EC) Power modes
  • 4x PLL available for external sources
• Fail-Safe Clock Monitor:
  • Allows for operational recovery if the external clock source stops
• Oscillator Start-up Timer (OST):
  • Ensures the stability of crystal oscillator sources