CAT24C323J-28TE13 View Datasheet(PDF) - Catalyst Semiconductor => Onsemi

Part Name

Description

View to exact match

CAT24C323J-28TE13

Supervisory circuits with I2C serial CMOS E2EPROM, precision reset controller and watchdog timer

Catalyst Semiconductor => Onsemi 

Advanced

CAT24C323(32K), CAT24C643 (64K)

Supervisory Circuits with I2C Serial CMOS E2PROM, Precision Reset Controller and Watchdog Timer

FEATURES

s Watchdog Timer Input (WDI)

s Programmable Reset Threshold

s 400 KHz I2C Bus Compatible

s 2.7 to 6 Volt Operation

s Low Power CMOS Technology

s 32 - Byte Page Write Buffer

s Built-in inadvertent write protection

— VCC Lock Out

DESCRIPTION

s Active High or Low Reset Outputs

— Precision Power Supply Voltage Monitoring

— 5V, 3.3V and 3V options

s 1,000,000 Program/Erase Cycles

s 100 Year Data Retention

s 8-Pin DIP or 8-Pin SOIC

s Commercial, Industrial and Automotive

Temperature Ranges

The CAT24C323/643 is a single chip solution to three

popular functions of EEPROM memory, precision reset

controller and watchdog timer. The 24C323(32K) and

24C643 (64K) feature a I2C Serial CMOS EEPROM

Catalyst advanced CMOS technology substantially re-

duces device power requirements. The 24C323/643

features a 32-byte page and is available in 8-pin DIP or

8-pin SOIC packages.

The reset function of the 24C323/643 protects the sys-

tem during brown out and power up/down conditions.

During system failure the watchdog timer feature pro-

tects the microcontroller with a reset signal. 24C323

features active low reset on pin 2 and active high reset

on pin 7. 24C323/643 features watchdog timer on the

WDI input pin (pin 1).

PIN CONFIGURATION

24C323/643*

WDI

RESET

WP

VSS

VCC

RESET

SCL

SDA

BLOCK DIAGRAM

EXTERNAL LOAD

VCC

VSS

DOUT

ACK

WORD ADDRESS

BUFFERS

SENSE AMPS

SHIFT REGISTERS

COLUMN

DECODERS

*All products offered in P and J packages

PIN FUNCITONS

Pin Name

Function

SDA

Serial Data/Address

RESET/RESET Reset I/O

SCL

Clock Input

Vcc

Power Supply

VSS

Ground

WDI

Watchdog Timer Input

WP

Write Protect

SDA

WP

START/STOP

LOGIC

CONTROL

LOGIC

XDEC

E2PROM

RESET Controller

High

Precision

WATCHDOG

Vcc Monitor

DATA IN STORAGE

HIGH VOLTAGE/

TIMING CONTROL

STATE COUNTERS

SLAVE

ADDRESS

COMPARATORS

SCL

© 1998 by Catalyst Semiconductor, Inc.

Characteristics subject to change without notice

WDI RESET/RESET

1

Doc. No. 25084-00 12/98

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