MAX800L Datasheet | Maxim Integrated

Description The MAX691A/MAX693A/MAX800L/MAX800M microprocessor (μP) supervisory circuits are pin-patible upgrades to the MAX691, MAX693, and MAX695. They improve performance with 30μA supply current, 200ms typ reset active delay on power-up, and 6ns chip-enable propagation delay. Features include write protection of CMOS RAM or EEPROM, separate watchdog outputs, backup-battery switchover, and a RESET output that is valid with VCC down to 1V. The MAX691A/ MAX800L have a 4.65V typical reset-threshold voltage, and the MAX693A/MAX800Ms’ reset threshold is 4.4V typical. The MAX800L/MAX800M guarantee power-fail accuracies to ±2%. Applications - - puters - - Controllers - - Intelligent Instruments - - Critical μP Power Monitoring Typical Operating Circuit 5V +8V REGULATOR 0.1µF 1N4148 0.47F- 35 VCC BATT ON VOUT 2 1 VBATT CE OUT 12 NO CONNECTION CMOS RAM MAX691A MAX693A MAX800L MAX800M GND 7 OSC IN PFO 10 8 OSC SEL RESET 15 LOW LINE WDO ADDRESS DECODE A0-A15 I/O µP RESET 6 14 AUDIBLE ALARM - Max Cap SYSTEM STATUS INDICATORS Max Cap is a registered trademark of Kanthal Globar, Inc. Features - - 200ms Power-OK/Reset Timeout Period - - 1μA Standby Current, 30μA Operating Current - - On-Board Gating of Chip-Enable Signals, 10ns max...