參數(shù)資料
型號： 24AA256T-EMS
廠商： Microchip Technology Inc.
英文描述： I2C⑩ Serial EEPROM Family Data Sheet
中文描述： ⑩的I2C串行EEPROM系列數(shù)據(jù)手冊
文件頁數(shù)： 19/42頁
文件大?。?/td> 540K
代理商： 24AA256T-EMS
2007 Microchip Technology Inc.
DS21930B-page 19
24AAXX/24LCXX/24FCXX
8.0
READ OPERATION
Read operations are initiated in much the same way as
write operations with the exception that the R/W bit of
the control byte is set to ‘
1
’. There are three basic types
of read operations: current address read, random read
and sequential read.
8.1
Current Address Read
The 24XX contains an address counter that maintains
the address of the last byte accessed, internally incre-
mented by ‘
1
’. Therefore, if the previous read or write
operation was to address ‘
n
’ (
n
is any legal address),
the next current address read operation would access
data from address
n +
1
.
Upon receipt of the control byte with R/W bit set to ‘
1
’,
the 24XX issues an acknowledge and transmits the
8-bit data byte. The master will not acknowledge the
transfer, but does generate a Stop condition and the
24XX discontinues transmission (Figure 8-1).
FIGURE 8-1:
CURRENT ADDRESS
READ
8.2
Random Read
Random read operations allow the master to access
any memory location in a random manner. To perform
this type of read operation, the byte address must first
be set. This is done by sending the byte address to the
24XX as part of a write operation (R/W bit set to ‘
0
’
).
Once the byte address is sent, the master generates a
Start condition following the acknowledge. This termi-
nates the write operation, but not before the internal
address counter is set. The master then issues the
control byte again, but with the R/W bit set to a ‘
1
’. The
24XX will then issue an acknowledge and transmit the
8-bit data byte. The master will not acknowledge the
transfer but does generate a Stop condition, which
causes the 24XX to discontinue transmission
(Figure 8-2 and Figure 8-3). After a random Read
command, the internal address counter will increment
to the next address location.
FIGURE 8-2:
RANDOM READ: 128-BIT TO 16 KBIT DEVICES
FIGURE 8-3:
RANDOM READ: 32 TO 512 KBIT DEVICES
Bus Activity
Master
SDA Line
Bus Activity
P
S
S
T
O
P
Control
Byte
S
T
A
R
T
Data
Byte
A
C
K
N
O
A
C
K
S
P
S
Bus Activity
Master
SDA Line
Bus Activity
S
T
A
R
T
S
T
O
P
Control
Byte
A
C
K
Address
Byte (n)
Control
Byte
S
T
A
R
T
Data
Byte
A
C
K
A
C
K
N
O
A
C
K
Bus Activity
Master
SDA Line
Bus Activity
A
C
K
N
O
A
C
K
A
C
K
A
C
K
A
C
K
S
T
O
P
S
T
A
R
T
Control
Byte
High Order
Address Byte
Low Order
Address Byte
Control
Byte
Data
Byte
S
T
A
R
T
S
S
P
相關(guān)PDF資料
PDF描述
24AA256T-EOT I2C⑩ Serial EEPROM Family Data Sheet
24AA256T-EP I2C⑩ Serial EEPROM Family Data Sheet
24AA256T-ESM I2C⑩ Serial EEPROM Family Data Sheet
24AA256T-ESN I2C⑩ Serial EEPROM Family Data Sheet
24AA256T-EST I2C⑩ Serial EEPROM Family Data Sheet
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
24AA256T-I/CS16K 功能描述:電可擦除可編程只讀存儲器 256K 32K X 8 1.8V SER EE IND RoHS:否 制造商:Intersil 存儲容量: 組織: 數(shù)據(jù)保留: 最大時鐘頻率: 最大工作電流: 工作電源電壓: 最大工作溫度: 安裝風格: 封裝 / 箱體:
24AA256T-I/MF 功能描述:電可擦除可編程只讀存儲器 256K 32K X 8 1.8V SER EE IND 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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8
24AA256T-I/MNY 功能描述:電可擦除可編程只讀存儲器 256K, 32Kx8, 1.8V SER EE, ExT 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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8
24AA256T-I/MS 功能描述:電可擦除可編程只讀存儲器 32kx8 - 1.8V 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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8
24AA256T-I/MSG 功能描述:電可擦除可編程只讀存儲器 32kx8 - 1.8V Lead Free Package 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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*