Maxim DS1706PESA

Простой сброс/сброс при включении питания2.63V1

Overview

The DS1705/DS1706PESA 3.3- or 5.0-Volt MicroMonitor monitors three vital conditions for a microprocessor: power supply, software execution, and external override. A precision temperature compensated reference and comparator circuit monitor the status of VCC at the device and at an upstream point for maximum protection. When the sense input detects an out-of-tolerance condition a non-maskable interrupt is generated. As the voltage at the device degrades, an internal power fail signal is generated which forces the reset 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 130ms to allow the power supply and processor to stabilize. The second function the DS1705/DS1706PESA performs is pushbutton reset control. The DS1705/DS1706PESA debounces the pushbutton input and guarantees an active reset pulse width of 130ms minimum. The third function is a watchdog timer. The DS1705/DS1706PESA has an internal timer that forces the WDO signal to the active state if the strobe input is not driven low prior to time-out.

Features

Applications

• Power distribution systems of CCU
• emergency room
• Medical-specific isolation transformer
• Medical-specific insulation monitor
• Transformer load monitoring equipment
• External alarm
• Display equipment
• DC stabilized power supply module
• Insulation fault location system
• Magnetic resonance imaging