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MB90487BPMC Datasheet(PDF) 94 Page - Fujitsu Component Limited. |
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MB90487BPMC Datasheet(HTML) 94 Page - Fujitsu Component Limited. |
94 / 124 page MB90480B/485B Series 94 DS07-13722-11E (4) Power-on Reset Standards (VCC = 2.7 V to 3.6 V, VSS = 0.0 V, TA = − 40 °C to + 85 °C) * : Power rise time requires VCC < 0.2 V. Notes: • The above standards are for the application of a power-on reset. • Within the device, the power-on reset should be applied by switching the power supply off and on again. Note : Rapid fluctuations in power supply voltage may trigger a power-on reset in some cases. As shown below, when changing supply voltage during operation, it is recommended that voltage changes be suppressed and a smooth restart be applied. Parameter Symbol Pin name Conditions Value Unit Remarks Min Max Power rise time tR VCC ⎯ 0.05 30 ms * Power down time tOFF VCC 1 ⎯ ms In repeated operation VCC tR tOFF 2.7 V 0.2 V 0.2 V 0.2 V VCC VSS The slope of voltage increase should be kept within 50 mV/ms. RAM data maintenance Main power supply voltage Sub power supply voltage |
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