MB90F474LPF datasheet(92/118 Pages) FUJITSU

92 / 118 page

MB90470 Series

(4) Power On Ratings (Power-on reset)

(VCC

= 2.7 V to 3.6 V, VSS = 0.0 V, TA = −40 °C to +85 °C)

* : Power supply rise time requires VCC

< 0.2 V.

Notes :

• VCC = VCC3 = VCC5

• The above ratings are values for power-on reset.

• A power-on reset should be applied by restarting the power supply inside the device.

Parameter

Sym-

bol

name

Condi-

tions

Value

Unit

Remarks

Min

Max

Power rise time

VCC



Power cutoff time

tOFF

VCC



For continuous operation

VCC

VSS

tOFF

2.7 V

Hold RAM data

0.2 V

Main supply voltage

Sub supply voltage

A rise slope of 50 mV

or less is recommended

Extreme variations in supply voltage may activate a power-on reset. As the illustration shows below ,

when varying supply voltage during operation the use of a smooth voltage rise with suppressed fluctuation

is recommended.

MB90F474LPF Datasheet(PDF) 92 Page - fujitsu semiconductor

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