Fairchild NM24C16U, NM24C17U service manual

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NM24C16U/NM24C17U
16K-Bit Serial EEPROM
2-Wire Bus Interface

NM24C16U/NM24C17U – 16K-Bit Serial EEPROM 2-Wire Bus Interface

August 1999

General Description

The NM24C16U/17U devices are 16K (16,384) bit serial interface
CMOS EEPROMs (Electrically Erasable Programmable Read­Only Memory). These devices fully conform to the Standard I2C™
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 addi­tion, 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.

NM24C17U 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 VCC. This section of
memory then effectively becomes a ROM (Read-Only Memory)
and can no longer be programmed as long as WP pin is connected
to VCC.

Fairchild EEPROMs are designed and tested for applications requir­ing high endurance, high reliability and low power consumption for a
continuously reliable non-volatile solution for all markets.

Block Diagram

V

CC

V

SS

WP

SDA

START

STOP

LOGIC

Functions

■ I2C™ compatible interface

■ 4,096 bits organized as 512 x 8

■ Extended 2.7V – 5.5V operating voltage

■ 100 KHz or 400 KHz operation

■ Self timed programming cycle (6ms typical)

■ "Programming complete" indicated by ACK polling

■ NM24C17U: Memory "Upper Block" Write Protect pin

Features

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

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

■ Typical 200µA active current (I

■ Typical 1µA standby current (ISB) for "L" devices and 0.1µA

standby current for "LZ" devices

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

■ Data retention greater than 40 years

H.V. GENERATION

TIMING &CONTROL

CCA

)

SCL

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

© 1999 Fairchild Semiconductor Corporation
NM24C16U/17U Rev. B.1

SLAVE ADDRESS

REGISTER &

COMPARATOR

R/W

CONTROL

LOGIC

WORD
ADDRESS
COUNTER

D

IN

XDEC

CK

1

E2PROM

ARRAY

YDEC

DATA REGISTER

D

OUT

DS800010-1

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Connection Diagrams

Dual-In-Line Package (N),

8-Pin SO Package (M8)

NM24C16U/NM24C17U – 16K-Bit Serial EEPROM 2-Wire Bus Interface

8-Pin TSSOP Package (MT8)

Rotated Die (24C16UT)

NC
NC
NC

V

SS

Pin Names

V

SS

SDA Serial Data I/O
SCL Serial Clock Input

NC No Connection
V

CC

Dual-In-Line Package (N),

NC
NC
NC

V

SS

1
2

NM24C16U

3
4

8
7
6
5

DS800010-2

See Package Number N08E,

Ground

Power Supply

8-Pin SO Package (M8)

1
2

NM24C17U

3
4

8
7
6
5

DS800010-4

See Package Number N08E,

V

CC

NC
SCL
SDA

V

CC

WP
SCL
SDA

Top View

Top View

NC

V

CC
NC

NC

1
2

NM24C16UT

3
4

M08A and MTC08

8-Pin TSSOP Package (MT8)

Rotated Die (24C17UT)

WP

V

CC
NC

NC

1
2

NM24C17UT

3
4

M08A and MTC08

8
7
6
5

DS800010-3

8
7
6
5

DS800010-5

SCL
SDA
V

SS

NC

SCL
SDA
V

SS

NC

Pin Names

V

SS

SDA Serial Data I/O
SCL Serial Clock input

WP Write Protect
V

CC

NC No Connection

NM24C16U/17U Rev. B.1

Ground

Power Supply

2

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Ordering Information
NM 24 C XX U F T LZ E XX Letter Description

NM24C16U/NM24C17U – 16K-Bit Serial EEPROM 2-Wire Bus Interface

Package N 8-pin DIP

Temp. Range None 0 to 70°C

Voltage Operating Range Blank 4.5V to 5.5V

SCL Clock Frequency Blank 100KHz

Density 16 16K

M8 8-pin SOIC
MT8 8-pin TSSOP

V -40 to +125°C
E -40 to +85°C

L 2.7V to 5.5V
LZ 2.7V to 5.5V and

<1µA Standby Current

Blank Normal Pin Out
T Rotated Die Pin Out

F 400KHz

Ultralite CS100UL Process

17 16K with Write Protect

C CMOS Technology
W Total Array Write Protect

Interface 24 IIC

NM Fairchild Non-Volatile

Memory

NM24C16U/17U Rev. B.1

3

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Product Specifications

NM24C16U/NM24C17U – 16K-Bit Serial EEPROM 2-Wire Bus Interface

Absolute Maximum Ratings

Ambient Storage Temperature –65°C to +150°C
All Input or Output Voltages

with Respect to Ground 6.5V to –0.3V

Lead Temperature

(Soldering, 10 seconds) +300°C

ESD Rating 2000V min.

Operating Conditions

Ambient Operating Temperature

NM24C16U/17U 0°C to +70°C
NM24C16UE/17UE -40°C to +85°C
NM24C16UV/17UV -40°C to +125°C

Positive Power Supply

NM24C16U/17U 4.5V to 5.5V
NM24C16UL/17UL 2.7V to 5.5V
NM24C16ULZ/17ULZ 2.7V to 5.5V

Standard VCC (4.5V to 5.5V) DC Electrical Characteristics

Symbol Parameter Test Conditions Limits Units

Min Typ Max

(Note 1)

I

V

V

CCA

I

SB

I

LI

I

LO

V

OL

IL

IH

Active Power Supply Current f

Standby Current VIN = GND or V
Input Leakage Current VIN = GND to V
Output Leakage Current V

= 400 KHz 0.2 1.0 mA

SCL

f

= 100 KHz

SCL

10 50 µA

0.1 1 µA

0.1 1 µA

= GND to V

OUT

CC

CC

CC

Input Low Voltage –0.3 VCC x 0.3 V
Input High Voltage VCC x 0.7 VCC + 0.5 V
Output Low Voltage I

= 3 mA 0.4 V

OL

Low VCC (2.7V to 5.5V) DC Electrical Characteristics

Symbol Parameter Test Conditions Limits Units

Min Typ Max

(Note 1)

I

CCA

I

SB

I

LI

I

LO

V

IL

V

IH

V

OL

Capacitance T

Active Power Supply Current f

= 400 KHz 0.2 1.0 mA

SCL

f

= 100 KHz

SCL

Standby Current VIN = GND VCC = 2.7V - 4.5V 1 10 µA

or V

CC

VCC = 2.7V - 4.5V 0.1 1 µA

VCC = 4.5V - 5.5V 10 50 µA
Input Leakage Current VIN = GND to V
Output Leakage Current V

= GND to V

OUT

CC

CC

Input Low Voltage –0.3 V

0.1 1 µA

0.1 1 µA
x 0.3 V

CC

Input High Voltage VCC x 0.7 VCC + 0.5 V
Output Low Voltage IOL = 3 mA 0.4 V

= +25°C, f = 100/400 KHz, VCC = 5V (Note 2)

A

Symbol Test Conditions Max Units

C

I/O

C

IN

Note 1: Typical values are TA = 25°C and nominal supply voltage (5V).
Note 2: This parameter is periodically sampled and not 100% tested.

Input/Output Capacitance (SDA) V

= 0V 8 pF

I/O

Input Capacitance (A0, A1, A2, SCL) VIN = 0V 6 pF

NM24C16U/17U Rev. B.1

4

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