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www.fairchildsemi.com

NM24C02/03 Rev. G

February 2000

© 1998 Fairchild Semiconductor Corporation

NM24C02/03 – 2K-Bit Standard 2-Wire Bus

Interface Serial EEPROM

General Description

The NM24C02/03 devices are 2048 bits of CMOS non-volatile

electrically erasable memory. These devices conform to all speci-

fications in the Standard IIC 2-wire protocol and are designed to

minimize device pin count, and simplify PC board layout require-

ments.

The upper half (upper 1Kbit) of the memory of the NM24C03 can be

memory then becomes unalterable unless WP is switched to V

This communications protocol uses CLOCK (SCL) and DATA

I/O (SDA) lines to synchronously clock data between the master

(for example a microprocessor) and the slave EEPROM device(s).

The Standard IIC protocol allows for a maximum of 16K of

EEPROM memory which is supported by the Fairchild family in

2K, 4K, 8K, and 16K devices, allowing the user to configure the

memory as the application requires with any combination of

EEPROMs. In order to implement higher EEPROM memory

densities on the IIC bus, the Extended IIC protocol must be used.

(Refer to the NM24C32 or NM24C65 datasheets for more infor-

mation.)

Fairchild EEPROMs are designed and tested for applications requir-

ing high endurance, high reliability and low power consumption.

Block Diagram

Features

I Extended operating voltage 2.7V – 5.5V

I 400 KHz clock frequency (F) at 2.7V - 5.5V

I 200µA active current typical

10

µA standby current typical

1

µA standby current typical (L)

0.1

µA standby current typical (LZ)

I IIC compatible interface

– Provides bi-directional data transfer protocol

I Schmitt trigger inputs

I Sixteen byte page write mode

– Minimizes total write time per byte

I Self timed write cycle

Typical write cycle time of 6ms

I Hardware Write Protect for upper half (NM24C03 only)

I Endurance: 1,000,000 data changes

I Data retention greater than 40 years

I Packages available: 8-pin DIP, 8-pin SO, and 8-pin TSSOP

I Available in three temperature ranges

- Commercial: 0

° to +70°C

- Extended (E): -40

° to +85C

- Automotive (V): -40

° to +125°C

H.V. GENERATION

TIMING &CONTROL

E2PROM

ARRAY

YDEC

DATA REGISTER

XDEC

CONTROL

LOGIC

WORD

ADDRESS

COUNTER

SLAVE ADDRESS

REGISTER &

COMPARATOR

START

STOP

LOGIC

CK

DIN

R/W

SDA

SCL

VSS

WP

VCC

DOUT

A2

A1

A0

DS500069-1