50.11 Internal Oscillator Parameters⁽¹⁾

Table 50-8. Internal Oscillator
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	0.9	1	1.1	MHz	-40°C ≤ T_A ≤ +85°C
OS51A			1.8	2	2.2	MHz	-40°C ≤ T_A ≤ +85°C
OS51B			0.88	1	1.12	MHz	+85°C ≤ T_A ≤ +125°C
OS51C			1.76	2	2.24	MHz	+85C ≤ T_A ≤ +125°C
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	—	19	—	μs	VREGPM = `'b00` System Clock at 4 MHz
OS54A*			—	30	—	μs	VREGPM = `'b01` System Clock at 4 MHz
OS54B*			—	115	—	μs	VREGPM = `'b10` System Clock at 4 MHz
OS54C*			—	120	—	μs	VREGPM = `'b11` System Clock at 4 MHz
OS56B*	T_LFOSCST	LFINTOSC Wake-up from Sleep Start-up Time	—	900	—	μs	VREGPM = `'b10` or`'b11`
* 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.

50.11 Internal Oscillator Parameters(1)