Datasheet > CAT24C042PA-28

CAT24C042PA-28

更新时间： 2023-01-03 00:23:24

品牌	Logo	应用领域
CATALYST		光电二极管
页数	文件大小	规格书
12页	71K
描述
Microprocessor Circuit, CMOS, PDIP8, PLASTIC, DIP-8

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CAT24C042PA-28 数据手册

CAT24C161/162 (16K), CAT24C081/082 (8K)

CAT24C041/042 (4K), CAT24C021/022 (2K)

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

■ Active high or low reset

FEATURES

— Precision power supply voltage monitor

— 5V, 3.3V and 3V systems

■ Watchdog monitors SDA for the CAT24CXX1

■ 400 KHz I²C bus compatible

■ 2.7 to 6.0 Volt operation

— Five threshold voltage options

■ 1,000,000 Program/Erase cycles

■ 100 Year data retention

■ Low power CMOS technology

■ 16-Byte page write buffer

■ Built-in inadvertent write protection

— V_CClock out

■ 8-pin DIP or 8-pin SOIC

■ Commercial, industrial and automotive

temperature ranges

— Write protect pin, WP

and against brownout conditions. Five reset threshold

voltages support 5V, 3.3V and 3V systems. If power supply

voltages are out of tolerance reset signals become active,

preventing the system microcontroller, ASIC or peripherals

from operating. Reset signals become inactive typically 200

ms after the supply voltage exceeds the reset threshold

level. With both active high and low reset signals, interface

to microcontrollers and other ICs is simple. In addition, a

reset pin can be used as a debounced input for push-button

manual reset capability.

DESCRIPTION

TheCAT25Cxx1isacompletememoryandsupervisory

solution for microcontroller-based systems. A serial

EEPROM memory (2/4/8/16K) with hardware memory

write protection, a system power supervisor with brown

out protection and a watchdog timer are integrated

together in low power CMOS technology. Memory

interface is via an I²C bus.

The 1.6-second watchdog circuit returns a system to a

known good state if a software or hardware glitch halts

or “hangs” the system. The CAT24Cxx1 watchdog

monitors the SDA line, making an additional PC board

trace unnecessary. The lower cost CAT24Cxx2 does

not have a watchdog timer.

TheCAT24Cxxxmemoryfeaturesa16-bytepage.Inaddition,

hardware data protection is provided by a write protect pin

WP and by a V_CCsense circuit that prevents writes to

memory whenever V_CCfalls below the reset threshold or

until V_CCreaches the reset threshold during power up.

The power supply monitor and reset circuit protects

memory and system controllers during power up/down

Available packages include an 8-pin DIP and a surface

mount, 8-pin SO package.

BLOCK DIAGRAM

PIN CONFIGURATION

EXTERNAL LOAD

SENSE AMPS

SHIFT REGISTERS

OUT

ACK

RESET

CAT

24CXX1/2

RESET

WORD ADDRESS

BUFFERS

COLUMN

DECODERS

GND

SCL

SDA

START/STOP

LOGIC

SDA

E²PROM

XDEC

CONTROL

LOGIC

DC = Do not connect

Part Dash Minimum Maximum

Number Threshold Threshold

DATA IN STORAGE

-45

-42

4.50

4.25

4.75

4.50

HIGH VOLTAGE/

TIMING CONTROL

RESET Controller

STATE COUNTERS

SCL

-30

-28

-25

3.00

2.85

2.55

3.15

3.00

2.70

Precision

SLAVE

ADDRESS

COMPARATORS

WATCHDOG

Only for

CAT24C161

Vcc Monitor

24C1601 BLOCK

RESET RESET

Doc No. 3000, Rev. A

Characteristics subject to change without notice

12 3 4 5 6 7...12

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与CAT24C042PA-28相关器件

型号	品牌	描述	获取价格	数据表
CAT24C042PA-28TE13	CATALYST	Supervisory Circuits with I2C Serial CMOS E2PROM, Precision Reset Controller and Watchdog	获取价格
CAT24C042PA-30TE13	CATALYST	Supervisory Circuits with I2C Serial CMOS E2PROM, Precision Reset Controller and Watchdog	获取价格
CAT24C042PA-42TE13	CATALYST	Supervisory Circuits with I2C Serial CMOS E2PROM, Precision Reset Controller and Watchdog	获取价格
CAT24C042PA-45	CATALYST	Microprocessor Circuit, CMOS, PDIP8, PLASTIC, DIP-8	获取价格
CAT24C042PA-45TE13	CATALYST	Supervisory Circuits with I2C Serial CMOS E2PROM, Precision Reset Controller and Watchdog	获取价格
CAT24C042PI-25	CATALYST	Microprocessor Circuit, CMOS, PDIP8, PLASTIC, DIP-8	获取价格

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