FEATURES

• Selectable watchdog timer

• Low VCC detection and reset assertion

—Four standard reset threshold voltages

—Adjust low VCC reset threshold voltage using

special programming sequence

—Reset signal valid to VCC = 1V

• Low power CMOS

—<20μA max standby current, watchdog on

—<1μA standby current, watchdog OFF

—3mA active current

• 128Kbits of EEPROM

—64 byte page write mode

—Self-timed write cycle

—5ms write cycle time (typical)

• Built-in inadvertent write protection

—Power-up/power-down protection circuitry

—Protect 0, 1/4, 1/2, all or 64, 128, 256 or 512

bytes of EEPROM array with programmable

Block Lock™ protection

• 400kHz 2-wire interface

• 2.7V to 5.5V power supply operation

• Available packages

—8 Ld SOIC

—8 Ld TSSOP

• Pb-free plus anneal available (RoHS compliant)