ADM693AARWZ-REEL

Processor Supervisor 4.4V 4.75V to 5.5V 16Pin SOIC W T/R

Product Details

The ADM691A/ADM693A/ADM800L/ADM800M family of supervisory circuits offers complete single chip solutions for power supply monitoring and battery control functions in microprocessor systems. These functions include mP reset, backup-battery switchover, watchdog timer, CMOS RAM write protection, and power-failure warning. The family of products provides an upgrade for the MAX691A/93A/800M family of products.

All parts are available in 16-pin DIP and SO packages. The ADM691A is also available in a space-saving TSSOP package. The following functionality is provided:

1. Power-on reset output during power-up, power-down and brownout conditions. The circuitry remains operational with VCC as low as 1 V.

2. Battery backup switching for CMOS RAM, CMOS micro-processor or other low power logic.

3. A reset pulse if the optional watchdog timer has not been toggled within a specified time.

4. A 1.25 V threshold detector for power fail warning, low battery detection, or to monitor a power supply other than +5 V.

### Features and Benefits

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Low Power Consumption

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Precision Voltage Monitor

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±2% Tolerance on ADM800L/M

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Reset Time Delay—200 ms, or Adjustable

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1 µA Standby Current

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Automatic Battery Backup Power Switching

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Fast Onboard Gating of Chip Enable Signals

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Also Available in TSSOP Package ADM691A