Internal Oscillator Parameters

Table 1. Internal Oscillators Characteristics⁽¹⁾
Symbol	Description	Min.	Typ.	Max.	Units	Conditions
f_OSCHF	Precision calibrated OSCHF frequency	—	1⁽²⁾ 2⁽²⁾ 3⁽²⁾ 4 8⁽²⁾ 12⁽²⁾ 16⁽²⁾ 20⁽²⁾ 24⁽²⁾	—	MHz
%_CAL	OSCHF tune step size	—	0.4	—	%
t_{OSCHF_ST}	OSCHF wake-up from sleep start-up time	—	24	—	μs	Device in Idle or Standby mode VREGCTRL.PMODE = FULL
t_{OSCHF_ST}	OSCHF wake-up from sleep start-up time	—	100	—	μs	Device in Power-Down mode VREGCTRL.PMODE = AUTO
f_OSC32K	Internal OSC32K frequency	—	32.768	—	kHz
t_{OSC32K_ST}	OSC32K wake-up from sleep start-up time	—	400	—	μs
Notes: 1.To ensure these oscillator frequency tolerances, V_DD and GND must be capacitively decoupled as close to the device as possible. 0.1 μF and 0.01 μF values in parallel are recommended. 2.These parameters are not calibrated.