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具有复位功能的电源监视器ADM709数据表
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The ADM709 contains a power supply monitor which generates a system reset during power-up， power-down and brownout conditions. When VCC falls below the reset threshold， RESET goes low and holds the µP in reset. On power-up the RESET output is held low for 140 ms after VCC rises above the threshold. The RESET output remains operational with VCC as low as 1 V. Three supply-voltage threshold levels are available suitable for +5 V， +3.3 V and for +3 V supply monitoring. The actual reset voltage threshold is given below. The ADM709 is available in 8-pin DIP and SOIC packages.
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