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NM24C02U/NM24C03U – 2K-Bit Serial EEPROM 2-Wire Bus Interface
August 1999
NM24C02U/NM24C03U
2K-Bit Serial EEPROM
2-Wire Bus Interface
General Description
The NM24C02U/NM24C03U are 2K (2,048) bit serial interface
CMOS EEPROMs (Electrically Erasable Programmable Read-
Only Memory). These devices fully conform to the
Standard
I
2
C™
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.
NM24C03U 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)
and can no longer be programmed as long as WP pin is connected
to V
CC
.
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.
Functions
I
I
2
C™ compatible interface
I
2,048 bits organized as 256 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
NM24C03U: Memory "Upper Block" Write Protect pin
Features
I
The I
2
C™ interface allows the smallest I/O pincount of any
EEPROM interface
I
16 byte page write mode to minimize total write time per byte
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
I
Endurance: Up to 1,000,000 data changes
I
Data retention greater than 40 years
Block Diagram
VCC
VSS
WP
H.V. GENERATION
TIMING &CONTROL
START
STOP
LOGIC
CONTROL
LOGIC
SLAVE ADDRESS
REGISTER &
COMPARATOR
E2PROM
ARRAY
SDA
SCL
XDEC
A2
A1
A0
WORD
ADDRESS
COUNTER
R/W
YDEC
CK
DIN
DATA REGISTER
DOUT
DS800007-1
I
2
C™ is a registered trademark of Philips Electronics N.V.
© 1998 Fairchild Semiconductor Corporation
NM24C02U/NM24C03U Rev. B.1
1
www.fairchildsemi.com
NM24C02U/NM24C03U – 2K-Bit Serial EEPROM 2-Wire Bus Interface
Connection Diagrams
Dual-in-Line Package (N), SO Package (M8), and TSSOP Package (MT8)
A0
A1
A2
VSS
1
2
3
4
8
7
VCC
NC
SCL
SDA
DS800007-2
NM24C02U
6
5
Top View
See Package Number N08E, M08A, and MTC08
Pin Names
A0,A1,A2
V
SS
SDA
SCL
NC
V
CC
Device Address Inputs
Ground
Serial Data I/O
Serial Clock Input
No Connection
Power Supply
Dual-in-Line Package (N), SO Package (M8), and TSSOP Package (MT8)
A0
A1
A2
VSS
1
2
3
4
8
7
VCC
WP
SCL
SDA
DS800007-3
NM24C03U
6
5
Top View
See Package Number N08E, M08A, and MTC08
Pin Names
A0,A1,A2
V
SS
SDA
SCL
WP
V
CC
Device Address Inputs
Ground
Serial Data I/O
Serial Clock input
Write Protect
Power Supply
2
NM24C02U/NM24C03U Rev. B.1
www.fairchildsemi.com
NM24C02U/NM24C03U – 2K-Bit Serial EEPROM 2-Wire Bus Interface
Ordering Information
NM
24
C
XX
U
F
LZ
E
XX
Package
Letter
N
M8
MT8
None
V
E
Blank
L
LZ
Description
8-pin DIP
8-pin SOIC
8-pin TSSOP
0 to 70°C
-40 to +125°C
-40 to +85°C
4.5V to 5.5V
2.7V to 5.5V
2.7V to 5.5V and
<1µA Standby Current
100KHz
400KHz
CS100UL Process
2K
2K with Write Protect
CMOS Technology
Total Array Write Protect
IIC
Fairchild Non-Volatile
Memory
Temp. Range
Voltage Operating Range
SCL Clock Frequency
Blank
F
Ultralite
Density
02
03
C
W
Interface
24
NM
3
NM24C02U/NM24C03U Rev. B.1
www.fairchildsemi.com
NM24C02U/NM24C03U – 2K-Bit Serial EEPROM 2-Wire Bus Interface
Product Specifications
Absolute Maximum Ratings
Ambient Storage Temperature
All Input or Output Voltages
with Respect to Ground
Lead Temperature
(Soldering, 10 seconds)
ESD Rating
–65°C to +150°C
6.5V to –0.3V
+300°C
2000V min.
Operating Conditions
Ambient Operating Temperature
NM24C02U/03U
NM24C02UE/03UE
NM24C02UV/03UV
Positive Power Supply
NM24C02U/03U
NM24C02UL/03UL
NM24C02ULZ/03ULZ
0°C to +70°C
-40°C to +85°C
-40°C to +125°C
4.5V to 5.5V
2.7V to 5.5V
2.7V to 5.5V
Standard V
CC
(4.5V to 5.5V) DC Electrical Characteristics
Symbol
Parameter
Test Conditions
Min
I
CCA
I
SB
I
LI
I
LO
V
IL
V
IH
V
OL
Active Power Supply Current
Standby Current
Input Leakage Current
Output Leakage Current
Input Low Voltage
Input High Voltage
Output Low Voltage
I
OL
= 3 mA
f
SCL
= 400 KHz
f
SCL
= 100 KHz
V
IN
= GND or V
CC
V
IN
= GND to V
CC
V
OUT
= GND to V
CC
–0.3
V
CC
x 0.7
Limits
Typ
(Note 1)
0.2
10
0.1
0.1
Units
Max
1.0
50
1
1
V
CC
x 0.3
V
CC
+ 0.5
0.4
mA
µA
µA
µA
V
V
V
Low V
CC
(2.7V to 5.5V) DC Electrical Characteristics
Symbol
Parameter
Test Conditions
Min
I
CCA
I
SB
Active Power Supply Current f
SCL
= 400 KHz
f
SCL
= 100 KHz
Standby Current
V
IN
= GND
or V
CC
V
CC
= 2.7V - 4.5V
V
CC
= 2.7V - 4.5V
V
CC
= 4.5V - 5.5V
Limits
Typ
(Note 1)
0.2
1
0.1
10
0.1
0.1
Units
Max
1.0
10
1
50
1
1
V
CC
x 0.3
V
CC
+ 0.5
0.4
mA
µA
µA
µA
µA
µA
V
V
V
I
LI
I
LO
V
IL
V
IH
V
OL
Input Leakage Current
Output Leakage Current
Input Low Voltage
Input High Voltage
Output Low Voltage
V
IN
= GND to V
CC
V
OUT
= GND to V
CC
–0.3
V
CC
x 0.7
I
OL
= 3 mA
Capacitance
T
A
= +25°C, f = 100/400 KHz, V
CC
= 5V
(Note 2)
Symbol
C
I/O
C
IN
Test
Input/Output Capacitance (SDA)
Input Capacitance (A0, A1, A2, SCL)
Conditions
V
I/O
= 0V
V
IN
= 0V
Max
8
6
Units
pF
pF
Note 1:
Typical values are T
A
= 25°C and nominal supply voltage (5V).
Note 2:
This parameter is periodically sampled and not 100% tested.
4
NM24C02U/NM24C03U Rev. B.1
www.fairchildsemi.com
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