CAT1022 Datasheet PDF - Catalyst Semiconductor Supervisory Circuits Specs

CAT1022 - Supervisory Circuits

This page provides the datasheet information for the CAT1022, a member of the CAT1021 Supervisory Circuits family.

Datasheet Summary

Description

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.

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) All supervisors have a 1.6 second watchdog timer circuit that resets a system to a known state if software or a Manual Reset Input hardware glitch.

Datasheet Details

Part number	CAT1022
Manufacturer	Catalyst Semiconductor
File Size	303.04 KB
Description	Supervisory Circuits
Datasheet	CAT1022 Datasheet
Additional preview pages of the CAT1022 datasheet.

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Full PDF Text Transcription

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CAT1021, CAT1022, CAT1023 Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer 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) All supervisors have a 1.6 second watchdog timer circuit that resets a system to a known state if software or a Manual Reset Input hardware glitch halts or “hangs” the system. For the www.DataSheet4U.com CAT1021 and CAT1022, the watchdog timer monitors 100 year data retention the SDA signal.

Published: Apr 19, 2007 |