DESCRIPTION

The CAT1021, CAT1022 and CAT1023 are complete memory and supervisory solutions for microcontroller-based systems. A 2k-bit serial EEPROM memory and a system power supervisor with brown-out protection are integrated together in low power CMOS technology.

Memory interface is via a 400kHz I2C bus.

FEATURES

■ Precision Power Supply Voltage Monitor

— 5V, 3.3V and 3V systems

— Five threshold voltage options

■ Watchdog Timer

■ Active High or Low Reset

— Valid reset guaranteed at VCC = 1V

■ 400kHz I2C Bus

■ 2.7V to 5.5V Operation

■ Low power CMOS technology

■ 16-Byte Page Write Buffer

■ Built-in inadvertent write protection

— WP pin (CAT1021)

■ 1,000,000 Program/Erase cycles

■ Manual Reset Input

■ 100 year data retention

■ Industrial and extended temperature ranges

■ 8-pin DIP, SOIC, TSSOP, MSOP or TDFN (3 x 3mm foot-print) packages

— TDFN max height is 0.8mm