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The condition of power (VDD=3.3V, 2.5V, 1.5V) rising and falling
(1)Power Supply rising
These contents are the important items which influence the reliability guarantee of the IC.
It is necessary to satisfy the following condition.
(1) P ow er rising condition
V D D =3.3V
m ore than 0.4V
V D D =2.5V
m ore than 0.4V
V D D =1.5V
m ore than 0.4V
Term inal 30： R E S E T
IIC -B us IN
Term inal31： S D A
Term inal 32： S C L
*note1
S uch the pow er term inal are em bedded the protective diode .
It m ust not send a penetration electric current.
C ondition:
P ow er level of 3.3V line ≧ P ow er level of 2.5V line ≧ P ow er level of 1.5V line
W hen the pow er level of 1.5V line is m ore than 0.4V , 3.3V line and 2.5V line m ust
reach the level of pow er m ore than 0.4V .
A nd w hen the pow er level of 2.5V line is m ore than 0.4V, 3.3V line m ust reach
the level of pow er m ore than 0.4V .
(2) P ow er falling condition
It is necessary to fall the pow er of 1.5V line before 3.3V line and 2.5V line are fallen, and to fall the pow er of
2.5V line before 3.3V line is fallen.
It m ust not send a penetration electric current too .
Feb./2005
3.3V (pow er range : 3.0〜 3.6V )
m ore than 3.0V
*note1
2.5V (pow er range : 2.3〜 2.7V )
m ore than 2.3V
*note1
1.5V (pow er range : 1.4〜 1.65V )
m ore than 1.4V
*note1
It needs to rise less than 40m s from starting to rise the pow er of 2.5V .
(reset release)
A fter all pow ers rising, it is necessary to keep resetting m ore
than 0.5m s.
A nd it m ust not keep the reset conditions m ore than one
m inute.
A fter reset release, it is necessary to be m ore than 100ns for
IIC B U S control starting.
TC90101FG
3.3V pow er
term inal
2.5V pow er
term inal
1.5V pow er
term inal
31
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