5.3.1 AC Parameters: All I/O Interfaces

Table 5-2. AC Parameters: All I/O InterfacesUnless otherwise indicated, these values are applicable over the specified operating range from T_A = -40℃ to +105℃, V_CC =+1.65V to +5.5V.
Parameter	Sym.	Direction		Min.	Typ.	Max.	Units	Conditions
Power-up Delay	t_PU⁽¹⁾	To ECC204-TFLXAUTH	Clock Divider = 1x	1.0	—	—	ms	Minimum time prior to V_CC > V_CC min.
			Clock Divider = 2x	1.2	—	—	ms
			Clock Divider = 4x	1.8	—	—	ms
Watchdog Timer (WDT) Delay	t_WDT⁽¹⁾	N/A		0.7	1	1.3	s	Time that the WDT will run after a command is sent, prior to automatically resetting the chip.

Note:

These parameters are ensured through characterization but not production tested.