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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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MB90F474LPF 데이터시트(PDF) 92 Page - fujitsu semiconductor |
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MB90F474LPF 데이터시트(HTML) 92 Page - fujitsu semiconductor |
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92 / 118 page  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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