GENERAL DESCRIPTION
The ADM8690–ADM8695 family of supervisory circuits offers complete single chip solutions for power supply monitoring and battery control functions in microprocessor systems. These functions include µP reset, backup battery switchover, watchdog timer, CMOS RAM write protection and power failure warning. The complete family provides a variety of configurations to satisfy most microprocessor system requirements.

FEATURES
   Upgrade for ADM690/ADM695, MAX690–MAX695
   Specified Over Temperature
   Low Power Consumption (0.7 mW)
   Precision Voltage Monitor
   Reset Assertion Down to 1 V VCC
   Low Switch On-Resistance 0.7 Ω Normal,
      7 Ω in Backup
   High Current Drive (100 mA)
   Watchdog Timer—100 ms, 1.6 s, or Adjustable
   400 nA Standby Current
   Automatic Battery Backup Power Switching
   Extremely Fast Gating of Chip Enable Signals (3 ns)
   Voltage Monitor for Power Fail
   Available in TSSOP Package

APPLICATIONS
   Microprocessor Systems
   Computers
   Controllers
   Intelligent Instruments
   Automotive Systems