GENERAL DESCRIPTIONThe ADM690–ADM695 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 warn ing. The complete family provides a variety of configurations to satisfy most microprocessor system requirements.

FEATURES   Superior Upgrade for MAX690–MAX695   Specified Over Temperature   Low Power Consumption (5 mW)   Precision Voltage Monitor   Reset Assertion Down to 1 V VCC   Low Switch On-Resistance 1.5 V Normal, 20 Ω in Backup   High Current Drive (100 mA)   Watchdog Timer—100 ms, 1.6 s, or Adjustable   600 nA Standby Current   Automatic Battery Backup Power Switching   Extremely Fast Gating of Chip Enable Signals (5 ns)   Voltage Monitor for Power Fail

APPLICATIONS   Microprocessor Systems   Computers   Controllers   Intelligent Instruments   Automotive Systems