FEATURES

? Dual voltage monitoring

? Active high and active low reset outputs

? Four standard reset threshold voltages

(4.6/2.9, 4.6/2.6, 2.9/1.6, 2.6/1.6)

—User programmable thresholds

? Lowline Output — Zero delayed POR

? Reset signal valid to VCC = 1V

? System battery switch-over circuitry

? Long battery life with low power consumption

—<50μA max standby current, watchdog on

—<30μA max standby current, watchdog off

? Selectable watchdog timer

—(0.15s, 0.4s, 0.8s, off)

? 64Kbits of EEPROM

? Built-in inadvertent write protection

—Power-up/power-down protection circuitry

—Protect none(0), or all of EEPROM array with

programmable Block Lock? protection

—In circuit programmable ROM mode