ADM805L

The ADM690A/ADM692A/ADM802L/M/ADM805L/M 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, and power  failure warnin                                                                        The ADM690A/ADM692A/ADM802L/M/ADM805L/M are  available in 8-pin packages and provide:
1. Power-on reset output during power-up, power-down and brownout conditions. The RESET output remains opera-
tional with VCC as low as 1 V.
2. Battery backup switching for CMOS RAM, CMOS  microprocessor or other low power devices.
3. A reset pulse if the optional watchdog timer has not been  toggled within 1.6 seconds.
4. A 1.25 V threshold detector for power fail warning, low battery detection, or to monitor a power supply other than +5 V.On the ADM690A/ADM802L/ADM805L the reset voltage  threshold is 4.65 V. On theADM692A/ADM802MADM805M, the reset voltage threshold is 4.40 V.
The ADM802L/ADM802M guarantee power fail accuracies to ±2%.
The ADM805L/M provides an active high reset output, RESET  instead of RESET.
The family of products  is fabricated using an advanced epitaxial  CMOS process combining low power consumption and high reliability. RESET assertion is guaranteed with VCC as low as 1 V. They provide a pin-compatible upgrade for the MAX690A/MAX692A/MAX802L/MAX802M/MAX805L  All parts are available in 8-pin DIP and SOIC packages. ADM690A is also available in a new space-saving microSOICpackage.