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参数资料
| 型号： | NM24W08 |
| 厂商： | Fairchild Semiconductor Corporation |
| 元件分类： | EEPROM |
| 英文描述： | 2K/4K/8K/16K-Bit Standard 2-Wire Bus Interface Serial EEPROM with Full Array Write Protect |
| 中文描述： | 2K/4K/8K/16K-Bit标准2线总线接口的串行EEPROM与全阵列写保护 |
| 文件页数： | 8/14页 |
| 文件大小： | 104K |
| 代理商： | NM24W08 |
8
www.fairchildsemi.com
NM24Wxx Rev. C.2
N
S
Device Addressing
Following a start condition the master must output the address of
the slave it is accessing. The most significant four bits of the slave
address are those of the device type identifier (see Figure 4) This
is fixed as 1010 for all EEPROM devices.
Slave Addresses (Figure 4)
All Standard IIC protocol EEPROMs use an internal protocol that
defines a PAGE BLOCK size of 2K bits (for Byte addresses 00
through FF). Therefore, address bits A0, A1, or A2 (if designated
'P') are used to access a PAGE BLOCK in conjuction with the Byte
address used to access any individual data byte.
Refer to the following table for Slave Address string details:
Device
A0 A1 A2
Page
Blks
Page Block
Addresses
NM24W02
A
A
A
1 (2K)
(None)
NM24W04
P
A
A
2 (4K)
0 1
NM24W08
P
P
A
4 (8K)
00 01 10 11
NM24W16
P
P
P
8 (16K)
000 001 010 011 100
101 110 111
Note:
A: Refers to a hardware configured Device Address pin.
P: Refers to an internal PAGE BLOCK memory segment
The last bit of the slave address defines whether a write or read
condition is requested by the master. A '1' indicates that a read
operation is to be executed, and a '0' initiates the write mode.
A simple review: After the NM24Wxx recognizes the start condi-
tion, the devices interfaced to the IIC bus wait for a slave address
to be transmitted over the SDA line. If the transmitted slave
address matches an address of one of the devices, the designated
slave pulls the line LOW with an acknowledge signal and awaits
further transmissions.
Device Type
Identifier
Device
Address
1
0
1
0
A2
A1
A0
R/W
(LSB)
NM24W02
Device Type
Identifier
Device
Address
Page
Block Address
1
0
1
0
A2
A1
A0
R/W
(LSB)
NM24W04
Device Type
Identifier
Device
Address
Page
Block Address
1
0
1
0
A2
A1
A0
R/W
(LSB)
NM24W08
Device Type
Identifier
Page
Block Address
1
0
1
0
A2
A1
A0
R/W
(LSB)
NM24W16
DS500074-11
相关PDF资料 |
PDF描述 |
|---|---|
| NM24W16UTLMT8 | 16K-Bit Serial EEPROM 2-Wire Bus Interface |
| NM24W16UFM8 | 16K-Bit Serial EEPROM 2-Wire Bus Interface |
| NM24W16UFMT8 | 16K-Bit Serial EEPROM 2-Wire Bus Interface |
| NM24W16UFN | 16K-Bit Serial EEPROM 2-Wire Bus Interface |
| NM24W16UFTEM8 | 16K-Bit Serial EEPROM 2-Wire Bus Interface |
相关代理商/技术参数 |
参数描述 |
|---|---|
| NM-250 | 制造商:WALDOM ELECTRONICS 功能描述: |
| NM-250-0015P | 制造商:WALDOM ELECTRONICS 功能描述: |
| NM-250-0025P | 制造商:WALDOM ELECTRONICS 功能描述: |
| NM25001S00 | 制造商:RadiSys 功能描述:LVDS;ADDCARD;BG845&LS855 |
| NM25C020 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:2K-Bit Serial CMOS EEPROM (Serial Peripheral Interface (SPI) Synchronous Bus) |
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