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The CAT1640 and CAT1641 are complete memory and supervisory solutions for microcontroller-based systems.A 64kbit 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.
The CAT1640 provides a precision VCC sense circuit and drives an open drain output, RESET low whenever VCC falls below the reset threshold voltage.
The CAT1641 provides a precision VCC sense circuit that drives an open drain output, RESET high whenever VCC falls below the reset threshold voltage.
CAT1640 Features
Precision power supply voltage monitor - 5V, 3.3V and 3V systems - +5.0V (+/- 5%, +/- 10%) - +3.3V (+/- 5%, +/- 10%) - +3.0V (+/- 10%) Active low reset, CAT1640 Active high reset, CAT1641 Valid reset guaranteed at VCC=1V 400kHz I2C bus 3.0V to 5.5V operation Low power CMOS technology 64-Byte page write buffer 1,000,000 Program/Erase cycles 100 year data retention 8-pin DIP, SOIC, TSSOP and TDFN packages Industrial temperature range