LV25450PNW Datasheet, PDF (3/40 Pages) Sanyo Semicon Device – For Automotive Applications DSP Tuner Front End

LV25450PNW
Power on/Power off Timing and the Power on Reset
Recommended Operating Ratings at Ta = 25°C, GND = 0V
Parameter
Operating supply voltage
Internal logic voltage
Power application time
(8.0 V → 5.0 V)
Internal register retention voltage
Internal register reset voltage
Internal register reset power
supply rise time
Power application time
(5.0 V → 8.0 V)
Symbol
Vcop H
Vcop L
VREG3
VREG4
T7
Vhmin3
Vhmin4
Voff
tPOR
T14
Conditions
Pin 3, 27, 35, 54, 55, 61
Pin 16, 25, 41
Pin 26
Pin 15
Pin 26 : Design reference value
Pin 15 : Design reference value
Pin 16, 25, 41 : Design reference value
Pin 16, 25, 41 : Design reference value
min
7.5
4.5
2.7
3.7
10
Ratings
typ
VREG3
VREG4
0
0.05
10
Unit
max
8.5
V
5.5
V
3.3
V
4.3
V
100
ms
2.2
V
2.2
V
0.2
V
3
ms
100
ms
Power-on Sequence and Power-on Reset
(1) Power on image and power on reset
Recommended Operating Ratings at Ta = 25°C, GND = 0V
Parameter
Operating supply voltage
Symbol
Vcop H
Conditions
Pins 3, 27, 35, and 61
min
7.5
Ratings
typ
Unit
max
8.5
V
Internal logic voltage
Vcop L
VREG3
Pins16, 25, and 41
Pin 26
4.5
5.5
V
2.7
3.3
V
VREG4
Pin 15
3.7
4.3
V
Internal register retention voltage
Vhmin3
Pin 26 : Design reference value
2.2
VREG3
V
Vhmin4
Pin 15 : Design reference value
2.2
VREG4
V
Internal register reset voltage
Voff
Pins 16, 25, and 41 : Design reference value
0
0.2
V
Internal register reset power
supply rise time
tPOR
Pins 16, 25, and 41 : Design reference value
0.05
3
ms
Note 1 : When reading out data from pin D0 connection (e.g., E2PROM) with the voltage at the pin 23 below 2.2V, be sure to read the data after transmitting
the control data and pin D0 being set “open” because the state of internal register cannot be specified.
Note 2 : It is necessary to set data when power is first applied or there is a momentary power interruption.
VCC_8Vop
VCC_5Vop
VREG4
VREG3
Vhmin3
Voff
Vhmin4
tPOR
Image of Supply Voltage
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