ADM696AR

ADM696AR FEATURES

Superior Upgrade for MAX696/MAX697

ADM696AR GENERAL DESCRIPTION

The ADM696/ADM697 supervisory circuits offer completesingle chip solutions for power supply monitoring and batterycontrol functions in microprocessor systems. These functionsinclude µP reset, backup-battery switchover, watchdog timer,CMOS RAM write protection, and power failure warning.The ADM696/ADM697 are available in 16-pin DIP and smalloutline packages and provide the following functions:1. Power-On Reset output during power-up, power-down andbrownout conditions. The RESET voltage threshold isadjustable using an external voltage divider. The RESEToutput remains operational with VCC as low as 1 V.2. A Reset pulse if the optional watchdog timer has not beentoggled within specified time.3. Separate watchdog time-out and low line status outputs.4. Adjustable reset and watchdog timeout periods.5. A 1.3 V threshold detector for power fail warning, low bat-tery detection, or to monitor a power supply other than VCC.6. Battery backup switching for CMOS RAM, CMOS micro-processor or other low power logic (ADM696).7. Write protection of CMOS RAM or EEPROM (ADM697).The ADM696/ADM697 is fabricated using an advanced epitaxialCMOS process combining low power consumption (5 mW),extremely fast Chip Enable gating (5 ns) and high reliability.RESET assertion is guaranteed with VCC as low as 1 V. Inaddition, the power switching circuitry is designed for minimalvoltage drop thereby permitting increased output current driveof up to 100 mA without the need for an external pass transistor.

ADM696AR APPLICATIONS