35.10.2 XOSC32K

Table 35-11. 32.768 kHz Crystal Oscillator (XOSC32K) Specifications
SymbolDescriptionMin.Typ. ✝Max.UnitConditions
fXOSC32Frequency32.768kHz
CXTAL1/XTAL2Parasitic pin capacitance5pF
CLCrystal load capacitance24pFXOSC32KCTRLA.PMODE = 0x2
12.5pFXOSC32KCTRLA.PMODE = 0x1
8pFXOSC32KCTRLA.PMODE = 0x0
ESREquivalent Series Resistance100XOSC32KCTRLA.PMODE = 0x2
70XOSC32KCTRLA.PMODE = 0x1
50XOSC32KCTRLA.PMODE = 0x0
tXOSC32_ST*XOSC32 Start-up time< 200msXOSC32KCTRLA.PMODE = 0x2
< 1000msXOSC32KCTRLA.PMODE = 0x1
< 1000msXOSC32KCTRLA.PMODE = 0x0

Data in the “Typ.” column is at TA = 25°C and VDD = 3.0V unless otherwise specified. These parameters are not tested and are for design guidance only.

* Dependent on crystal type and external components.