45.4.2 Internal Oscillator Parameters⁽¹⁾

Table 45-8.
Standard Operating Conditions (unless otherwise stated)
Param No.	Sym.	Characteristic	Min.	Typ. †	Max.	Units	Conditions
OS50	F_HFOSC	Precision Calibrated HFINTOSC Frequency	—	4 8 12 16 32 48 64	—	MHz	(Note 2)
OS51	F_HFOSCLP	Low-Power Optimized HFINTOSC Frequency	0.91	1	1.09	MHz	Fundamental Freq.1 MHz; -40°C to 85°C
			1.76	2	2.24	MHz	Fundamental Freq.2 MHz; -40°C to 85°C
			—	—	—	MHz	Fundamental Freq.1 MHz; -40°C to 125°C
			—	—	—	MHz	Fundamental Freq.2 MHz; -40°C to125°C
OS52	F_MFOSC	Internal Calibrated MFINTOSC Frequency	—	500	—	kHz
OS53*	F_LFOSC	Internal LFINTOSC Frequency	27.9	31	34.1	kHz
OS54*	T_HFOSCST	HFINTOSC Wake-up from Sleep Start-up Time	— — — —	13 30 84 93	40 — — —	μs μs μs μs	VREGPM = `00` VREGPM = `01` VREGPM = `10` VREGPM = `11` System Clock at 4 MHz
OS55	T_LFOSCST	LFINTOSC Wake-up from Sleep Start-up Time	—	0.3	—	ms
OS56	F_SFOSC	Internal Calibrated SFINTOSC Frequency	—	1	—	MHz
* These parameters are characterized but not tested. † Data in “Typ” column is at 3.0V, 25°C unless otherwise stated. These parameters are for design guidance only and are 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.

45.4.2 Internal Oscillator Parameters(1)