4.2.3.3 Power ON/OFF Sequences for Multiple Supplies

Figure 4-9. ATSAMA5D27-WLSOM1 Multiple Supplies Connections: Power-On Sequence

Figure 4-10. ATSAMA5D27-WLSOM1 Multiple Supplies Connections: Power-Off Sequence

Table 4-3. ATSAMA5D27-WLSOM1 Multiple Supplies Timing Table
Symbol	Description	Min.	Typ.	Max.	Unit
t1	Power-Up Request Timing	0.5	–	2000	ms
t2	VDDSDHC Power-Up Timing	–	35	100	µs
t3	VDDISC Power-Up Timing	–	40	100	µs
t4	VDD_DDR Power-Up Timing	–	8	–	ms
t5	NRST Timing for Release	–	16	–	ms
t6	VLDO2 Power-Up Timing after I²C Request	–	0.5	1	ms
t7	VLDO2 Power-Down Timing after I²C Request	–	–	1	ms
t8	VDD_3V3 Power-Down Timing	–	10	–	µs
t9	NRST Forced to Low Timing	–	–	10	µs