S6J3350 Datasheet, PDF (187/249 Pages) Cypress Semiconductor – 32-bit Microcontroller Spansion® TraveoTM Family

PRELIMINARY
S6J3350 Series
9.1.4.5 Power-on Conditions
Parameter
Symbol
Pin
Name
Condition
s
Min
Level detection
voltage
-
VCC5
-
2.2
Level detection
hysteresis width
-
VCC5
-
-
Level detection
time
-
-
-
-
Power off time
-
VCC5
-
50
(TA: Recommended operating conditions, VSS=0.0 V)
Value
Unit
Typ
Max
Remarks
2.4
2.6
V
100
-
mV
-
40
μs
*1
-
-
ms
*2
VCC5:
Power ramp rate
dV/dt VCC5
0.2V to
-
-
1
V/µs ^*3
2.6V
Maximum ramp
VCC5:
rate guaranteed to
not generate
|dV/dt|
VCC5
Between
2.4V and
-
power-on reset
4.5V
*1: This specification is at 1V/μs of power ramp rate.
-
50
mV/µs ^*4
*2: VCC5 must be held below 0.2V for a minimum period of tOFF.
*3: Power ramp rate must be 1V/us or less from 0.2V 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
0.2V
tOFF
0.2V
2.6V
dV/dt
 Undetected power ramp rate
VCC
|dV/dt|
5.5V
4.5V
|dV/dt|
2.4V
Document Number: 002-10634 Rev.**
Page 187 of 249