CAT1021 Datasheet (Catalyst Semiconductor)

CAT1021, Supervisory Circuits

The CAT1021, CAT1022 and CAT1023 are complete memory and supervisory solutions for microcontrollerbased 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.

The C

CAT1021 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 in