Datasheet

29. OSC32KCTRL – 32KHz Oscillators Controller
29.1 Overview
The 32KHz Oscillators Controller (OSC32KCTRL) provides a user interface to the 32.768kHz oscillators:
XOSC32K and OSCULP32K.
The OSC32KCTRL sub-peripherals can be enabled, disabled, calibrated, and monitored through
interface registers.
All sub-peripheral statuses are collected in the Status register (STATUS). They can additionally trigger
interrupts upon status changes through the INTENSET, INTENCLR, and INTFLAG registers.
29.2 Features
• 32.768kHz Crystal Oscillator (XOSC32K)
– Programmable start-up time
– Crystal or external input clock on XIN32 I/O
– Clock failure detection with safe clock switch
– Clock failure event output
• 32.768kHz Ultra Low-Power Internal Oscillator (OSCULP32K)
– Ultra low-power, always-on oscillator
– Frequency fine tuning
• Calibration value loaded from Flash factory calibration at Reset
• 1.024 kHz clock outputs available
SAM D5x/E5x Family Data Sheet
OSC32KCTRL – 32KHz Oscillators Controller
© 2019 Microchip Technology Inc.
Datasheet
DS60001507E-page 811