MAX808L Datasheet | Maxim Integrated

Description The MAX801/MAX808 microprocessor (µP) supervisory circuits monitor and control the activities of +5V µPs by providing backup-battery switchover, low-line indication, and µP reset. Additional features include a watchdog for the MAX801 and CMOS RAM write protection for the MAX808. The MAX801/MAX808 offer a choice of reset-threshold voltage (denoted by suffix letter): 4.675V (L), 4.575V (N), and 4.425V (M). These devices are available in 8-pin DIP and SO packages. ________________________Applications puters Controllers Intelligent Instruments Critical µP Power Monitoring Portable/Battery-Powered Equipment Embedded Systems Pin Configurations appear at end of data sheet. __________Typical Operating Circuit +5V 0.1μF 0.1μF VCC OUT BATT 0.1μF LOWLINE RESET MAX808 CE IN CE OUT GND POWER FOR μP CMOS RAM POWER NMI RESET µP SYSTEM FROM I/O SYSTEM OR ADDRESS DECODER TO CMOS RAM ____________________________Features - Precision Voltage Monitoring, ±1.5% Reset Accuracy - 200ms Power-OK/Reset Time Delay - RESET Output (MAX808) RESET and RESET Outputs (MAX801) - Watchdog Timer (MAX801) - On-Board Gating of Chip-Enable Signals (MAX808): Memory Write-Cycle pletion 3ns CE Gate Propagation Delay - 1µA Standby Current - Power Switching: 250m A in VCC Mode 20m A in Battery-Backup Mode - Max Cap™/Super Cap™ patible - RESET Guaranteed Valid to VCC = 1V - Low-Line Threshold 52m V Above Reset Threshold Max Cap is a trademark of The Carborundum Corp. Super Cap is a trademark of Baknor Industries. ______________Ordering Information PART- TEMP RANGE PIN-PACKAGE MAX801_CPA 0°C to...