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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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IMP1817 датащи(PDF) 34 Page - A1 PROs co., Ltd. |
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IMP1817 датащи(HTML) 34 Page - A1 PROs co., Ltd. |
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34 / 36 page  4 408-432-9100/www.impweb.com © 1999 IMP, Inc. IMP1 IMP1233M 233M Application Information Operation – Power Monitor The IMP1233M detects out-of-tolerance power supply conditions. It resets a processor during power-up and issues a reset to the system processor when the monitored power supply voltage is below the reset threshold (power-down). When an out-of- tolerance VCC voltage is detected, the RESET signal is asserted. On power-up, RESET is kept active (LOW) for approximately 350ms after the power supply voltage has reached the selected tolerance. This allows the power supply and microprocessor to stabilize before RESET is released. Figure 1. Timing Diagram: Power-Up Figure 2. Timing Diagram: Power-Down VHTL VCCTP VLTL VCC RESET tR tRPU VOH 1233M_05.eps VHTL VCCTP VLTL VCC RESET tF VOL tRPD 1233M_06.eps |
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