View max691a-max800m datasheet:

19-0094; Rev 8; 12/99 Microprocessor Supervisory Circuits General Description ____________________________Features The MAX691A/MAX693A/MAX800L/MAX800M micro- 200ms Power-OK/Reset Timeout Period processor (µP) supervisory circuits are pin-compatible 1µA Standby Current, 30µA Operating Current upgrades to the MAX691, MAX693, and MAX695. They improve performance with 30µA supply current, 200ms On-Board Gating of Chip-Enable Signals, typ reset active delay on power-up, and 6ns chip- 10ns max Delay enable propagation delay. Features include write pro- MaxCap™ or SuperCap™ Compatible tection of CMOS RAM or EEPROM, separate watchdog R E S E T outputs, backup-battery switchover, and a RESET out- Guaranteed RESET Assertion to VCC = +1V put that is valid with VCC down to 1V.