View max690r-max806t datasheet:

19-0243; Rev 1; 9/94 3.0V/3.3V Microprocessor Supervisory Circuits _______________General Description ____________________________Features – — — — — – These microprocessor (µP) supervisory circuits reduce RESET and RESET Outputs the complexity and number of components required for Manual Reset Input power-supply monitoring and battery-control functions Precision Supply-Voltage Monitor in µP systems. They significantly improve system relia- 200ms Reset Time Delay bility and accuracy compared to separate ICs or discrete components. Watchdog Timer (1.6sec timeout) These devices are designed for use in systems powered Battery-Backup Power Switching— by 3.0V or 3.3V supplies. See the selector guide in the Battery Can Exceed VCC in Normal Operation back of this data she