39.10.2 XOSC32K

Table 39-10. 32.768 kHz Crystal Oscillator (XOSC32K) Specifications
Symbol	Description	Min.	Typ. ✝	Max.	Unit	Conditions
f_XOSC32	Frequency	—	32.768	—	kHz
C_XTAL1/XTAL2 *	Parasitic pin capacitance	—	5	—	pF
C_L *	Crystal load capacitance	—	—	18	pF	XOSC32KCTRLA.LPMODE = `0`
C_L *	Crystal load capacitance	—	—	8	pF	XOSC32KCTRLA.LPMODE = `1`
ESR *	Equivalent Series Resistance	—	100	—	kΩ	XOSC32KCTRLA.LPMODE = `0`
ESR *	Equivalent Series Resistance	—	50	—	kΩ	XOSC32KCTRLA.LPMODE = `1`
t_{XOSC32_ST} *	XOSC32 start-up time	—	300	—	ms	XOSC32KCTRLA.LPMODE = `0`
t_{XOSC32_ST} *	XOSC32 start-up time	—	1000	—	ms	XOSC32KCTRLA.LPMODE = `1`
✝ Data found in the “Typ.” column is at T_A = 25°C and V_DD = 3.0V unless otherwise specified. These parameters are not tested and are for design guidance only. * These parameters are characterized but not tested in production.