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SRC0 数据表(PDF) 25 Page - STMicroelectronics |
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SRC0 数据表(HTML) 25 Page - STMicroelectronics |
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25 / 48 page  DocID026008 Rev 2 25/48 SRC0 Waveforms 48 Figure 19. Long push (option with enable deassertion) 1. tSRD period is set by external capacitor CSRD. 2. PB ignored during tINT_Min. 3. After tSRD expires EN is forced low. PB status ignored PB status ignored VCC undervoltage detection status ignored PB PS HOLD INT (2) EN (3) Push-button pressed and PB connected to GND tDEBOUNCE Push-button held even after tSRD expires and EN is deasserted t INT_Min tDEBOUNCE After tEN_OFF expires PB is monitored for falling edge tEN_OFF INT can go high, if PB goes high, but system freezes and processor won’t respond if system freezes, processor won’t respond to any INT status change tSRD (1) set by CSRD SR AM00253v2 |
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