CAT1027WI-45

Dual Voltage Supervisory Circuits with I2C Serial 2Kbit CMOS EEPROM

DESCRIPTION

The CAT1026 and CAT1027 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 VCC Power Supply Voltage Monitor

— 5V, 3.3V and 3V systems

— Five threshold voltage options

„ Additional voltage monitoring

— Externally adjustable down to 1.25V

„ Watchdog timer CAT1027 only

„ 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

„ 1,000,000 Program/Erase cycles

„ Manual Reset capability

„ 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