Document Number: 002-10634 Rev. *J
Page
177 of 307
S6J3350 Series
9.1.4.5
Power-on Conditions
(T
A
: Recommended operating conditions, V
SS
= 0.0 V)
Parameter
Symbol
Pin
Name
Conditions
Value
Unit
Remarks
Min
Typ
Max
Level detection
voltage
-
VCC5
-
2.2
2.4
2.6
V
Level detection
hysteresis width
-
VCC5
-
-
100
-
mV
Level detection time
-
-
-
-
-
40
μs
*1
Power off time
t
OFF
VCC5
-
100
-
-
μs
*2
Power ramp rate
dV/dt
VCC5
VCC5:
1.5V to 2.6V
-
-
1
V/µs
*3
Maximum ramp rate
guaranteed to not
generate power-on
reset
|dV/dt|
VCC5
VCC5:
Between 2.4V
and 4.5V
-
-
50
mV/µs
*4
*1: This specification is at 1V/μs of power ramp rate.
*2: VCC5 must be held below 1.5V for a minimum period of t
OFF
.
*3: Power ramp rate must be 1V/us or less from 1.5V to 2.6V.
Power-on can detect by satisfying power ramp rate when power off time is satisfied.
*4: This specification is specified the power supply fluctuation after power on detection. When VCC5 voltage is between 2.4V and
4.5V, the power supply fluctuation is below 50mV/us, the detection of power-on is suppressed. The power-on does not detect in
any power fluctuation between 4.5V and 5.5V.
Notes:
When using S6J3350, *2 and *3 must be satisfied. When neither *2 nor *3 can be satisfied, assert external reset (RSTX) at
power up and any brownout event.
Power off time, Power ramp rate
VCC
t
OFF
1.5V
1.5V
dV/dt
2.6V
Maximum ramp rate guaranteed to not generate power-on reset
VCC
2.4V
|dV/dt|
5.5V
|dV/dt|
4.5V