CAT24C44LA-G

更新时间： 2024-10-28 13:06:35

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安森美 - ONSEMI		/
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数据手册

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CAT24C44LA-G 数据手册

CAT24C44

256-Bit Serial Nonvolatile CMOS Static RAM

FEATURES

■ Single 5V Supply

■ JEDEC Standard Pinouts:

–8-lead DIP

■ Infinite EEPROM to RAM Recall

■ CMOS and TTL Compatible I/O

–8-lead SOIC

■ 100,000 Program/Erase Cycles (EEPROM)

■ Auto Recall on Power-up

■ Low CMOS Power Consumption:

–Active: 3mA Max.

–Standby: 30µA Max.

■ Commercial, Industrial and Automotive

Temperature Ranges

■ Power Up/Down Protection

■ 10 Year Data Retention

DESCRIPTION

store protection circuitry prohibits STORE operations

when V_CCis less than 3.5V (typical) ensuring EEPROM

data integrity.

The CAT24C44 Serial NVRAM is a 256-bit nonvolatile

memory organized as 16 words x 16 bits. The high

speed Static RAM array is bit for bit backed up by a

nonvolatile EEPROM array which allows for easy trans-

fer of data from RAM array to EEPROM (STORE) and

from EEPROM to RAM (RECALL). STORE operations

are completed in 10ms max. and RECALL operations

typically within 1.5µs. The CAT24C44 features unlim-

ited RAM write operations either through external RAM

writes or internal recalls from EEPROM. Internal false

The CAT24C44 is manufactured using Catalyst’s ad-

vancedCMOSfloatinggatetechnology.Itisdesignedto

endure 100,000 program/erase cycles (EEPROM) and

has a data retention of 10 years. The device is available

in JEDEC approved 8-lead plastic DIP and SOIC

packages.

PIN CONFIGURATION

PIN FUNCTIONS

Pin Name

Function

Serial Clock

Serial Input

Serial Data Output

Chip Enable

Recall

DIP Package (L)

SOIC Package ( V)

STORE

STORE SK

RECALL DI

RECALL

STORE

V_CC

Store

+5V

V_SS

Ground

Characteristics subject to change without notice

Doc. No. MD-1083, Rev. T

12 3 4 5 6 7...9

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