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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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SPC574S60 Fiches technique(PDF) 33 Page - STMicroelectronics |
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SPC574S60 Fiches technique(HTML) 33 Page - STMicroelectronics |
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33 / 77 page  DS10601 Rev 6 33/77 SPC574Sx Electrical characteristics 76 Figure 4. Start-up reset requirements Figure 5 describes the device behavior depending on the supply signal on PORST: 1. PORST does not go low enough: it is filtered by input buffer hysteresis. The device remains in the current state. 2. PORST goes low enough, but not for long enough: it is filtered by a low pass filter. The device remains in the current state. 3. The PORST generates a reset: a) PORST low but initially filtered during at least WFRST. Device remains initially in current state. b) PORST potentially filtered until WNFRST. Device state is unknown. It may either be reset or remains in current state depending on extra condition (PVT — process, voltage, temperature). c) PORST asserted for longer than WNFRST. The device is under hardware reset. VIL VDD device reset forced by RESET VDDMIN RESET VIH device start-up phase |
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