Datasheet

• Fractional Digital Phase Locked Loop (FDPLL96M)
– 48MHz to 96MHz output clock frequency
– 32KHz to 2MHz input reference clock frequency range
– Three possible sources for the reference clock
– Adjustable proportional integral controller
– Fractional part used to achieve 1/16th of reference clock step
• 3.3V Brown-Out Detector (BOD33)
– Programmable threshold
– Threshold value loaded from Flash User Calibration at startup
– Triggers resets or interrupts
– Operating modes:
• Continuous mode
• Sampled mode for low power applications (programmable refresh frequency)
– Hysteresis
• Internal Voltage Regulator system (VREG)
– Operating modes:
• Normal mode
• Low-power mode
– With an internal non-configurable Brown-out detector (BOD12)
• 1.2V Brown-Out Detector (BOD12)
– Programmable threshold
– Threshold value loaded from Flash User Calibration at start-up
– Triggers resets or interrupts
– Operating modes:
• Continuous mode
• Sampled mode for low power applications (programmable refresh frequency)
– Hysteresis
• Voltage Reference System (VREF)
– Bandgap voltage generator with programmable calibration value
– Temperature sensor
– Bandgap calibration value loaded from Flash Factory Calibration at start-up
SAM D21 Family
SYSCTRL – System Controller
© 2018 Microchip Technology Inc.
Datasheet Complete
DS40001882D-page 173