SAMA5D2 datasheet(41/56 Pages) MICROCHIP

41 / 56 page

on VDDFUSE only when the Customer Fuse Matrix is accessed in Write mode, and to turn off VDDFUSE

otherwise.

Figure 8-1. Recommended Power-up Sequence

VDDANA

VDDOSC

VDDUTMII

VDDAUDIOPLL

VDDIOP0

Group 2

No specific order and no

specific timing required

among these channels except

DDRM_VDD12 and DDRM_VDD18

VDDIOP1

VDDBU

VDDCORE

VDDPLLA

VDDHSIC

tRSTPU

time

NRST

VDDUTMIC

VDDIOP2

VDDISC

VDDSDMMC

VDDFUSE

Group 1

DDRM_VDD18

DDRM_VDD12, VDDIODDR

Table 8-1. Power-up Timing Specification

Symbol Parameter

Conditions

Min

Max

Unit

Group 2 to Group 1 delay

Delay from the last Group 2 established(1) supply to the

first Group 1 supply turn-on

–

Group 1 delay

Delay from the first Group 1 established supply to the

last Group 1 established supply

–

VDDFUSE to VDDBU delay

Delay from VDDBU established to VDDFUSE turn-on

–

DDRM_VDD18 to

DDRM_VDD12 delay

Delay from the DDRM_VDD18 established to

DDRM_VDD12 turn-on

–

LPDDR2 power-on delay

Delay from DDRM_VDD18 turn-on to DDRM_VDD12

established

–

tRSTPU

Reset delay at power-up

From the last established supply to NRST high

–

Note:

An “established” supply refers to a power supply established at 90% of its final value.

SAMA5D2 SIP

Electrical Characteristics

Datasheet

DS60001484D-page 41

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