User's Manual

Specification Number : SP-xxxx
P.11/18
7. Power Sequences
8.1 Power Up/Down Sequence
VCC
RST_N
GPIO
Ta
Tb
Tc
Td
H
L
H
L
H
L
Power Up
Power Down
8.2 Reset and Power Cycle Sequence
VCC
RST_N
Te
H
H
L
Symbol
Description
Typ.
Unit
Ta
Time between VCC valid and
RST_N ramped-up
Ta > 0
usec
Tb
Time between VCC valid
and GPIO enabled
Tb > 400
Tc
Time between RST_N invalid
and VCC invalid
Tc > 0
Td
Time between GPIO invalid
and VCC invalid
Td > 0
Te
Length of RST_N pulse
Te > 1