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MB90800 Datasheet(PDF) 76 Page - fujitsu semiconductor |
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MB90800 Datasheet(HTML) 76 Page - fujitsu semiconductor |
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76 / 92 page  MB90800 Series 76 DS07-13733-6E (3) Power-on reset (VCC = AVCC = 3.3 V ± 0.3 V, VSS = AVSS = 0.0 V, TA = − 40 °C to + 85 °C) Notes : • VCC should be set under 0.2 V before power-on rising up. • These value are for power-on reset. • In the device, there are internal registers which is initialized only by a power-on reset. If these initialization is executing, power-on procedure must be obeyed by these value. Note : Sudden change of power supply voltage may activate the power-on reset function. When changing power supply voltages during operation, raise the power smoothly by suppressing variation of voltages as shown below. Parameter Symbol Pin name Condi- tions Value Unit Remarks Min Max Power supply rising time tR VCC ⎯ ⎯ 30 ms At normal operating Power supply shutdown time tOFF VCC 1 ⎯ ms Wait time until power on VCC tR 0.2 V 0.2 V 2.7 V tOFF 0.2 V VCC 2.7 ± 0.3 V VSS RAM data hold Limiting the slope of rising within 50 mV/ms is recommended. |
Similar Part No. - MB90800_09 |
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Similar Description - MB90800_09 |
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