NM24C09UFLZM8

更新时间： 2024-11-12 23:53:55

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		可编程只读存储器电动程控只读存储器电可擦编程只读存储器
页数	文件大小	规格书
13页	102K
描述
I2C Serial EEPROM

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NM24C09UFLZM8 数据手册

August 1999

NM24C08U/NM24C09U

8K-Bit Serial EEPROM

2-Wire Bus Interface

General Description,

Functions

I I²C™ compatible interface

The NM24C08U/09U devices are 8K (8,192) bit serial interface

CMOS EEPROMs (Electrically Erasable Programmable Read-

OnlyMemory).ThesedevicesfullyconformtotheStandardI²C™

2-wire protocol which uses Clock (SCL) and Data I/O (SDA) pins

to synchronously clock data between the "master" (for example a

microprocessor) and the "slave" (the EEPROM device). In addi-

tion, the serial interface allows a minimal pin count packaging

designed to simplify PC board layout requirements and offers the

designer a variety of low voltage and low power options.

I 8,192 bits organized as 1,024 x 8

I Extended 2.7V – 5.5V operating voltage

I 100 KHz or 400 KHz operation

I Self timed programming cycle (6ms typical)

I "Programming complete" indicated by ACK polling

I NM24C09U: Memory "Upper Block" Write Protect pin

Features

NM24C09U incorporates a hardware "Write Protect" feature, by

which, the upper half of the memory can be disabled against

programming by connecting the WP pin to V_CC. This section of

memory then effectively becomes a ROM (Read-Only Memory)

andcannolongerbeprogrammedaslongasWPpinisconnected

I The I²C™ interface allows the smallest I/O pincount of any

EEPROM interface

I 16 byte page write mode to minimize total write time per byte

to V_CC

I Typical 200µA active current (I_CCA)

I Typical 1µA standby current (I_SB) for "L" devices and 0.1µA

standby current for "LZ" devices

Fairchild EEPROMs are designed and tested for applications requir-

ing high endurance, high reliability and low power consumption for a

continuously reliable non-volatile solution for all markets.

I Endurance: Up to 1,000,000 data changes

I Data retention greater than 40 years

Block Diagram

H.V. GENERATION

TIMING &CONTROL

START

STOP

SDA

LOGIC

CONTROL

LOGIC

SLAVE ADDRESS

PROM

COMPARATOR

XDEC

ARRAY

SCL

WORD

ADDRESS

COUNTER

R/W

YDEC

OUT

DATA REGISTER

DS800009-1

I²C™ is a registered trademark of Philips Electronics N.V.

NM24C08U/09U Rev. B.1

www.fairchildsemi.com

12 3 4 5 6 7...13

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