| 전자부품 데이터시트 검색엔진 |
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STWD100 데이터시트(PDF) 10 Page - STMicroelectronics |
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STWD100 데이터시트(HTML) 10 Page - STMicroelectronics |
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10 / 25 page ![]() Watchdog timing STWD100 10/25 3 Watchdog timing Figure 6. Power-up X X STWD100xP STWD100xW, STWD100xX, STWD100xY AI12662 Power up: Watchdog timer starts running as soon as VCC rises above ~ 2.2 V. Power up: Watchdog timer starts running as soon as VCC rises above ~ 2.2 V. At power up, WDI is a don't care. It can be 1 or 0. Can also transition from high to low. Low-to-high transition on WDI will reset timer. But no input transition is required to begin timing. At power up, WDI is a don't care. It can be 1 or 0. Low-to-high or high-to-low transition on WDI will reset timer. But no input transition is required to begin timing. ~ 2.2 V ~ 2.2 V VCC VCC WDI WDI WDO WDO EN EN X (ie, 1 or 0 but not floating) X (ie, 1 or 0 but not floating) tWD tWD |
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