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MB90F474LPF データシート(PDF) 92 Page - fujitsu semiconductor

部品番号 MB90F474LPF
部品情報  16-Bit Proprietary Microcontroller
PDF  118 Pages
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メーカー  FUJITSU [fujitsu semiconductor]
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MB90F474LPF データシート(HTML) 92 Page - fujitsu semiconductor

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MB90470 Series
92
(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
Pin
name
Condi-
tions
Value
Unit
Remarks
Min
Max
Power rise time
tR
VCC
30
ms
*
Power cutoff time
tOFF
VCC
1
ms
For continuous operation
VCC
VCC
VSS
tR
tOFF
2.7 V
Hold RAM data
0.2 V
0.2 V
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.



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