Features
   
      
      
         - All clocks and clock sources are
            automatically enabled when requested by peripherals
 
         - Internal oscillators:
               - 16/20MHz oscillator
                  (OSC20M)
 
               - 32KHz Ultra Low Power oscillator
                  (OSCULP32K)
 
               
            
 
         - External clock options:
 
         - Main clock features: 
               - Safe run-time switching
 
               - Prescaler with 1x to 64x division
                  in 12 different settings