GENERAL DESCRIPTION
The ADM8611/ADM8616/ADM8617/ADM8618 are supervisory circuits which monitor power supply voltage levels and code execution integrity in microprocessor-based systems. A power-on-reset signal is generated when the supply voltage rises to a preset threshold level. The ADM8611’s debounced manual reset input can be used to initiate a reset by means of an external push-button or logic signal. The ADM8616–ADM8618 have an on-chip watchdog timer which can reset the microprocessor if it fails to strobe within a preset timeout period.

FEATURES
   Precision 1.8V to 5V Power Supply Monitoring
   9 Reset Threshold Options:
      1.58V to 4.63V
   140ms (Min) Reset Timeout
   Manual Reset Input (ADM8611)
   Watchdog Timer (ADM8616–ADM8618)
   Reset Output Stages
      Push-Pull Active-Low
      Open-Drain Active-Low
      Push-Pull Active-High
   Low Power Consumption (3µA)
   Guaranteed Reset Output valid to VCC=1V
   Power Supply Glitch Immunity
   Specified Over -40°C to +85°C Temperature Range
   4-Lead SC70 Package

APPLICATIONS
   Microprocessor Systems
   Computers
   Controllers
   Intelligent Instruments
   Portable Equipment