43.4.2 Internal Oscillator Parameters

Table 43-8.
Standard Operating Conditions (unless otherwise stated)⁽¹⁾
Param No.	Sym.	Characteristic	Min.	Typ. †	Max.	Units	Conditions
OS50	F_HFOSC	Precision Calibrated HFINTOSC Frequency⁽²⁾	—	4 8 12 16 32	—	MHz
OS51*	F_HFOSCLP	Low-Power Optimized HFINTOSC Frequency	— —	1 2	— —	MHz MHz
OS52*	F_MFOSC	Internal Calibrated MFINTOSC Frequency	—	500	—	kHz
OS53*	F_LFOSC	Internal LFINTOSC Frequency	—	31	—	kHz
OS54*	T_HFOSCST	HFINTOSC Wake-up from Sleep Start-up Time	—	20	—	μs	System Clock at 4 MHz
OS56*	T_LFOSCST	LFINTOSC Wake-up from Sleep Start-up Time	—	332	—	μs
OS57*	%CAL	OSCTUNE Step Size	—	0.25	—	%
† Data in “Typ” column is at 3.0V, 25°C unless otherwise stated. * These parameters are characterized but not tested. Note: To ensure these oscillator frequency tolerances, V_DD and V_SS must be capacitively decoupled as close to the device as possible. 0.1 μF and 0.01 μF values in parallel are recommended. See the figure below.

Figure 43-5. Precision Calibrated HFINTOSC Frequency Accuracy Over Device V_DD and Temperature