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参数资料
| 型号： | NM24W03ULEN |
| 厂商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分类： | PROM |
| 英文描述： | 256 X 8 I2C/2-WIRE SERIAL EEPROM, PDIP8 |
| 封装： | PLASTIC, DIP-8 |
| 文件页数： | 1/13页 |
| 文件大小： | 99K |
| 代理商： | NM24W03ULEN |
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www.fairchildsemi.com
NM24C02U/NM24C03U Rev. B.1
NM24C02U/NM24C03U
–
2K-Bit
Serial
EEPROM
2-Wire
Bus
Interface
August 1999
1998 Fairchild Semiconductor Corporation
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 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 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.
Block Diagram
Functions
I I2C 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 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
I Typical 200A active current (I
CCA)
I Typical 1A standby current (I
SB) for "L" devices and 0.1A
standby current for "LZ" devices
I Endurance: Up to 1,000,000 data changes
I Data retention greater than 40 years
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
DS800007-1
I2C is a registered trademark of Philips Electronics N.V.
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