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看门狗和5引脚SOT-23手动复位低电压监控电路ADM6823数据表
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The ADM6823 is supervisory circuit that monitors power supply voltage levels and code execution integrity in microprocessor-based systems. As well as providing poweron reset signals， an on-chip watchdog timer can reset the microprocessor if it fails to strobe within a preset timeout period. A reset signal can also be asserted by means of an external push-button through a manual reset input. The part is available in nine reset threshold options， ranging from 1.58 V to 4.63 V. The reset and watchdog timeout periods are fixed at 140 ms （minimum） and 1.6 sec （typical）， respectively. The ADM6823 is available in a 5-lead SOT-23 package and typically consumes only 7 µA， making it suitable for use in low power， portable applications.
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