DS1819A|DS1819B|DS1819C - 5V及3.3V MicroMonitor

DS1819A|DS1819B|DS1819C是Maxim美信半导体公司的一款监控电路、电压监测、排序产品，DS1819A|DS1819B|DS1819C是5V及3.3V MicroMonitor，本站介绍了DS1819A|DS1819B|DS1819C的封装应用图解、特点和优点、功能等，并给出了与DS1819A|DS1819B|DS1819C相关的Maxim元器件型号供参考。

DS1819A|DS1819B|DS1819C - 5V及3.3V MicroMonitor - 监控电路、电压监测、排序 - Maxim美信半导体高性能芯片品质 - 美信半导体

产品概述

The DS1814 5-Volt MicroMonitor and the DS1819 3.3V MicroMonitor monitor three vital conditions for a microprocessor: power supply, software execution, and external override. First, a precision temperature-compensated reference and comparator circuit monitor the status of VCC. When an out-of-tolerance condition occurs, an internal power-fail signal is generated which forces the reset(s) to an active state. When VCC returns to an in-tolerance condition, the reset signal is kept in the active state for a minimum of 140ms to allow the power supply and processor to stabilize.The DS1814/DS1819 ‘A' and ‘C' perform pushbutton reset control. They debounce the pushbutton input and generate an active reset pulse width of 140ms minimum. The DS1814/9 'A' and 'B' versions perform a watchdog function. The watchdog is an internal timer that forces the reset signals to the active state if the strobe input does not change state every 1.12 seconds. The watchdog timer function can be disabled by leaving the watchdog strobe input disconnected.

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