DESCRIPTION

The DS1707/DS1708 3.3 or 5.0 Volt MicroMonitor monitors three vital conditions for a microprocessor: power supply, voltage sense, and external override. A precision temperature–compensated reference and comparator circuit monitors 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.

FEATURES

• Holds microprocessor in check during power transients

• Automatically restarts microprocessor after power failure

• Monitors pushbutton for external override

• Accurate 5, 10 or 20 resets for 3.3 systems and 5 or 10 resets for 5.0 volt systems

• Eliminates the need for discrete components

• 20 tolerance compatible with 3.0 volt systems

• Pin compatible with the MAXIM MAX707/MAX708 in 8–pin DIP and 8–pin SOIC packages

• 8–pin DIP, 8–pin SOIC and 8–pin µ–SOP packages available

• Industrial temperature range –40°C to +85°C