5.2 MPU Clocks

Two clock sources are necessary for the module microprocessor:

• 24-MHz main oscillator for the SAMA5D27 MPU
• 32.768-kHz oscillator for slow clock oscillator input and embedded RTC of the SAMA5D27 MPU

The 24-MHz clock is generated by a small size crystal. It delivers a 24-MHz clock to the SAMA5D27 Oscillator IP.

The 32.768-kHz clock is generated by a small size crystal. It delivers an accurate 32.768-kHz clock to the SAMA5D27 for its embedded RTC.