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