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Fairchild Semiconductor - NM24C03

Numéro de référence 24C03
Description NM24C03
Fabricant Fairchild Semiconductor 
Logo Fairchild Semiconductor 





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24C03 fiche technique
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February 1999
NM24C02/03 – 2048-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 I2C™ 2-wire protocol and are designed to minimize
device pin count, and simplify PC board layout requirements.
The upper half of the memory of the 24C03 can be disabled (Write
Protected) by connecting the WP pin to VCC. This section of
memory then becomes unalterable unless WP is switched to VSS.
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).
In addition, this bus structure allows for a maximum of 16K of
EEPROM memory. This 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 (not to exceed 16K). For devices with densities greater
than 16K, a different protocol is used. Refer to 32K or higher
densities for additional details.
Fairchild EEPROMs are designed and tested for applications
requiring high endurance, high reliability and low power consump-
tion.
Block Diagram
VCC
VSS
WP
SDA
SCL
START
STOP
LOGIC
SLAVE ADDRESS
REGISTER &
COMPARATOR
CONTROL
LOGIC
Features
s Extended operating voltage 2.7V – 5.5V
s 400 kHz clock frequency (F) at 2.7V - 5.5V
s 500µA active current typical
10µA standby current typical
1µA standby typical (L)
0.1µA standby typical (LZ)
s I2C compatible interface
– Provides bidirectional data transfer protocol
s Sixteen byte page write mode
– Minimizes total write time per byte
s Self timed write cycle
Typical write cycle time of 6ms
s Hardware write protect for upper block (NM24C03 only)
s Endurance: 1,000,000 data changes
s Data retention greater than 40 years
s Packages available: 8-pin DIP, 8-pin SO, and 8-pin TSSOP
s 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
XDEC
E2PROM
ARRAY
A2 WORD
A1 ADDRESS
A0 COUNTER
R/W YDEC
DIN
DOUT
ACK
CK
DATA REGISTER
DOUT
DS500069-1
© 1998 Fairchild Semiconductor Corporation
NM24C02/03 Rev.C
1
www.fairchildsemi.com

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