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參數(shù)資料
| 型號： | M34E02-FDW1T |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 2 Kbit Serial IC Bus EEPROM Serial Presence Detect for DDR2 DIMMs |
| 中文描述： | 2千位串行總線的EEPROM芯片串行存在檢測的DDR2內(nèi)存 |
| 文件頁數(shù)： | 11/23頁 |
| 文件大?。?/td> | 144K |
| 代理商： | M34E02-FDW1T |
11/23
M34E02
Figure 10. Read Mode Sequences
Note: 1. The seven most significant bits of the Device Select Code of a Random Read (in the 1
st
and 3
rd
bytes) must be identical.
Read Operations
Read operations are performed independently of
whether hardware or software protection has been
set.
The device has an internal address counter which
is incremented each time a byte is read.
Random Address Read
A dummy Write is first performed to load the ad-
dress into this address counter (as shown in Fig-
ure 10) but without sending a Stop condition.
Then, the bus master sends another Start condi-
tion, and repeats the Device Select Code, with the
RW bit set to 1. The device acknowledges this,
and outputs the contents of the addressed byte.
The bus master must notacknowledge the byte,
and terminates the transfer with a Stop condition.
Current Address Read
For the Current Address Read operation, following
a Start condition, the bus master only sends a De-
vice Select Code with the RW bit set to 1. The de-
vice acknowledges this, and outputs the byte
addressed by the internal address counter. The
counter is then incremented. The bus master ter-
minates the transfer with a Stop condition, as
shown in Figure 10, withoutacknowledging the
byte.
S
DEV SEL *
BYTE ADDR
S
DEV SEL
DATA OUT 1
AI01942
DATA OUT N
S
S
CURRENT
ADDRESS
READ
DEV SEL
DATA OUT
RANDOM
ADDRESS
READ
S
S
DEV SEL *
DATA OUT
SEQUENTIAL
CURRENT
READ
S
DATA OUT N
S
DEV SEL *
BYTE ADDR
SEQUENTIAL
RANDOM
READ
S
DEV SEL *
DATA OUT 1
S
ACK
R/W
NO ACK
ACK
R/W
ACK
ACK
R/W
ACK
ACK
ACK
NO ACK
R/W
NO ACK
ACK
ACK
R/W
ACK
ACK
R/W
ACK
NO ACK
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M34E02-FDW1TG | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2 Kbit Serial IC Bus EEPROM Serial Presence Detect for DDR2 DIMMs |
| M34E02-FDW1TP | 功能描述:電可擦除可編程只讀存儲器 2Kbit Serial EE RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| M34E02-FDW6G | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2 Kbit serial presence detect (SPD) EEPROM for double data rate (DDR1 and DDR2) DRAM modules |
| M34E02-FDW6P | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2 Kbit serial presence detect (SPD) EEPROM for double data rate (DDR1 and DDR2) DRAM modules |
| M34E02-FDW6TG | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2 Kbit serial presence detect (SPD) EEPROM for double data rate (DDR1 and DDR2) DRAM modules |
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