46.12 RSTCTRL

Table 46-16. Reset, WDT, Oscillator Start-up Timer, Power-up Timer, Brown-out Detector Specifications
Symbol	Description	Min.	Typ. ✝	Max.	Units	Conditions
t_RST *	RESET pin pulse-width low to ensure a Reset	2.5			µs
R_{RST_UP}*	RESET pin pull-up resistor		35		kΩ
T_WDT *	Watchdog Timer time-out period		15.6		ms	1:512 Prescaler
T_SUT *	Power-up timer period		64		ms	SUT=7
V_BOD	Brown-out Detect Voltage⁽¹⁾		1.9		V	BODLEVEL0
		2.3	2.45	2.65	V	BODLEVEL1
		2.55	2.7	2.9	V	BODLEVEL2
		2.7	2.85	3.05	V	BODLEVEL3
V_{BOD_HYS}	Brown-out Detect hysteresis		70		mV	BODLEVEL1
t_{BOD_ST}	Brown-out Detect start-up time		1.9		µs
t_{BOD_128HZ}	BOD Response Time Sampling mode @128 Hz		7.81		ms	SAMPFREQ = 0
t_{BOD_32HZ}	BOD Response Time Sampling mode @32 Hz		31.25		ms	SAMPFREQ = 1
t_{BOD_RST}	Brown-out reset response time		3		µs
✝ Unless otherwise specified, data in the “Typ.” column is at T_A = 25°C and V_DD = 3.0V. These parameters are not tested and are for design guidance only. * These parameters are characterized but not tested in production. Note: To ensure these voltage tolerances, V_DD and V_DDIO2 must be capacitively decoupled to GND as close to the device as possible. See the Connection for Power Supply section of the Hardware Guidelines section for details.

Table 46-17. Voltage Level Monitor Threshold Specifications
Symbol	Description	Min.	Typ. ✝	Max.	Units	Conditions
V_DET *	Voltage detection threshold	1	5	10	% of BOD threshold	VLMLVL = 0x01
		9	15	22		VLMLVL = 0x02
		19	25	32		VLMLVL = 0x03
✝ Unless otherwise specified, data in the “Typ.” column is at T_A = 25°C and V_DD = 3.0V. These parameters are not tested and are for design guidance only. * These parameters are characterized but not tested in production.