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TC1232CUA713 Scheda tecnica(PDF) 4 Page - Microchip Technology |
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TC1232CUA713 Scheda tecnica(HTML) 4 Page - Microchip Technology |
4 / 24 page TC1232 DS20001370E-page 4 2002-2014 Microchip Technology Inc. FIGURE 1-2: Push Button Reset and Watchdog Timer Reset Timing Waveforms. AC CHARACTERISTICS (CONTINUED) Electrical Specifications: Unless otherwise noted, TA = TMIN to TMAX; VCC = +4.0V to 5.5V. Parameters Sym. Min. Typ. Max. Units Conditions PB RST Pulse Width tPB 20 — — ms Note 1 PB RST Falling Edge Low to Reset Active tPBD 14 20 ms PB RST Rising Edge High to Reset Inactive tRST 250 610 1000 ms ST Pulse Width tST 20 — — ns ST Time-out Period tTD 62.5 150 250 ms TD Pin = 0V 250 600 1000 ms TD Pin = Open 500 1200 2000 ms TD Pin = VCC Note 1: PB RST must be held low for a minimum of 20 ms to ensure a Reset. RST VIL tPB RST tPBD VIH tRST PB RST The debounced PB RST input ignores input pulses less than 1 ms and is designed to recognize pulses of 20 ms or greater. tST ST tTD RST (when tTD tTD (min)) “H” RST (when tTD(min) tTD tTD(max)) (when tTD tTD(max)) RST RST (when tTD tTD(min)) “L” RST (when tTD(min) tTD tTD(max)) (when tTD tTD(max)) RST |
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