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參數(shù)資料
| 型號(hào)： | NM34C02 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | 2K-Bit Standard 2-Wire Bus Interface |
| 中文描述： | 的2K位標(biāo)準(zhǔn)2線總線接口 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大小： | 90K |
| 代理商： | NM34C02 |
1
www.fairchildsemi.com
NM34C02 Rev. D.2
N
1999 Fairchild Semiconductor Corporation
March 1999
NM34C02
2K-Bit Standard 2-Wire Bus Interface
Designed with Permanent Write-Protection for First 128 Bytes for Serial Presence
Detect Application on Memory Modules
General Description
The NM34C02 is 2048 bits of CMOS non-volatile electrically
erasable memory. It is designed to support Serial Presence
Detect circuitry in memory modules. This communications proto-
col uses CLOCK (SCL) and DATA I/O (SDA) lines to synchro-
nously clock data between the master (for example a micropro-
cessor) and the slave EEPROM device(s).
The contents of the non-volatile memory allows the CPU to
determine the capacity of the module and the electrical character-
istics of the memory devices it contains. This will enable "plug and
play" capability as the module is read and PC main memory
resources utilized through the memory controller.
The first 128 bytes of the memory of the NM34C02 can be
permanently Write Protected by writing to the "WRITE PROTECT"
Register. Write Protect implementation details are described
under the section titled
Addressing the WP Register
.
The NM34C02 is available in a JEDEC standard TSSOP package
for low profile memory modules for systems requiring efficient
space utilization such as in a notebook computer. Two options are
available: L - Low Voltage and LZ - Low Power, allowing the part
to be used in systems where battery life is of primary importance.
Block Diagram
Features
I
Extended Operating Voltage: 2.7V-5.5V
I
Write-Protection for first 128 bytes
I
200
μ
A active current typical
– 10
μ
A standby current typical
– 1.0
μ
A standby current typical (L)
– 0.1
μ
A standby current typical (LZ)
I
IIC compatible interface
– Provides bidirectional data transfer protocol
I
Sixteen byte page write mode
– Minimizes total write time per byte
I
Self timed write cycle
- Typical write cycle time of 6ms
I
Endurance: 1,000,000 data changes
I
Data retention greater than 40 years
I
Packages available: 8-pin TSSOP and 8-pin SO
DS012821-1
H.V. GENERATION
TIMING &CONTROL
E2PROM
ARRAY
16 x 16 x 8
16
YDEC
8
DATA REGISTER
XDEC
CONTROL
LOGIC
WORD
ADDRESS
COUNTER
SLAVE ADDRESS
REGISTER &
COMPARATOR
START
STOP
LOGIC
START CYCLE
16
4
4
CK
DIN
R/W
LOAD
INC
SDA
VSS
VCC
DOUT
A2
A1
A0
Device Address Bits
0/1/2/3
SCL
Write Protect
Register
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| NM34W02M8X | 2K-Bit Standard 2-Wire Bus Interface Serial EEPROM with Full Array Write Protect |
| NM34W02EM8X | 2K-Bit Standard 2-Wire Bus Interface Serial EEPROM with Full Array Write Protect |
| NM34W02EMT8X | 2K-Bit Standard 2-Wire Bus Interface Serial EEPROM with Full Array Write Protect |
| NM34W02LEM8X | 2K-Bit Standard 2-Wire Bus Interface Serial EEPROM with Full Array Write Protect |
| NM34W02LEMT8X | 2K-Bit Standard 2-Wire Bus Interface Serial EEPROM with Full Array Write Protect |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NM34C02EM8 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:2K-Bit Standard 2-Wire Bus Interface |
| NM34C02EMT8 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:I2C Serial EEPROM |
| NM34C02LEM8 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:2K-Bit Standard 2-Wire Bus Interface |
| NM34C02LEMT8 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:2K-Bit Standard 2-Wire Bus Interface |
| NM34C02LM8 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:2K-Bit Standard 2-Wire Bus Interface |
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