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M48Z128Y-85PM1 Datasheet(PDF) 6 Page - STMicroelectronics |
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M48Z128Y-85PM1 Datasheet(HTML) 6 Page - STMicroelectronics |
6 / 17 page M48Z128, M48Z128Y 6/17 Table 8. Power Down/Up AC Characteristics (TA = 0 to 70 °C) Note: 1. VPFD (max) to VPFD (min) fall time of less than tF may result in deselection/write protection not occurring until 200µs after VCC pass- es VPFD (min). 2. VPFD (min) to VSO fall time of less than tFB may cause corruption of RAM data. Symbol Parameter Min Max Unit tF (1) VPFD (max) to VPFD (min) VCC Fall Time 300 µs tFB (2) VPFD (min) to VSO VCC Fall Time 10 µs tWP Write Protect Time from VCC =VPFD 40 150 µs tR VSO to VPFD (max) VCC Rise Time 0 µs tER E Recovery Time 40 120 ms Figure 6. Power Down/Up Mode AC Waveforms AI01031 VCC E (PER CONTROL INPUT) OUTPUTS DON’T CARE HIGH-Z tF tFB tR tWP tDR VALID VALID (PER CONTROL INPUT) RECOGNIZED RECOGNIZED VPFD (max) VPFD (min) VSO tER |
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