参数资料
| 型号： | 24VL014/P |
| 厂商： | Microchip Technology |
| 文件页数： | 11/30页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 1KBIT 400KHZ 8DIP |
| 标准包装： | 60 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 1K (128 x 8) |
| 速度： | 100kHz，400kHz |
| 接口： | I²C，2 线串口 |
| 电源电压： | 1.5 V ~ 3.6 V |
| 工作温度： | -20°C ~ 85°C |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-PDIP |
| 包装： | 管件 |
| 产品目录页面： | 1443 (CN2011-ZH PDF) |
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24VL014
8.0
READ OPERATIONS
Once the word address is sent, the master generates a
Start condition following the acknowledge. This
Read operations are initiated in the same way as write
operations, with the exception that the R/W bit of the
slave address is set to ‘ 1 ’. There are three basic types
of read operations: current address read, random read
and sequential read.
terminates the write operation, but not before the
internal Address Pointer is set. The master then issues
the control byte again but with the R/W bit set to a ‘ 1 ’.
The 24VL014 will then issue an acknowledge and
transmits the eight-bit data word. The master will not
acknowledge the transfer, but does generate a Stop
8.1
Current Address Read
condition and the 24VL014 discontinues transmission
The 24VL014 contains an address counter that main-
tains the address of the last word accessed, internally
incremented by one. Therefore, if the previous read
(Figure 8-2). After this command, the internal address
counter will point to the address location following the
one that was just read.
access was to address n, the next current address read
operation would access data from address n + 1. Upon
8.3
Sequential Read
receipt of the slave address with the R/W bit set to ‘ 1 ’,
the 24VL014 issues an acknowledge and transmits the
8-bit data word. The master will not acknowledge the
transfer, but does generate a Stop condition and the
24VL014 discontinues transmission (Figure 8-1).
Sequential reads are initiated in the same way as a
random read except that after the 24VL014 transmits
the first data byte, the master issues an acknowledge
as opposed to a Stop condition in a random read. This
directs the 24VL014 to transmit the next sequentially
addressed 8-bit word (Figure 8-3).
8.2
Random Read
To provide sequential reads, the 24VL014 contains an
Random read operations allow the master to access
any memory location in a random manner. To perform
this type of read operation, the word address must first
be set. This is done by sending the word address to the
24VL014 as part of a write operation.
internal Address Pointer which is incremented by one
at the completion of each operation. This Address
Pointer allows the entire memory contents to be serially
read during one operation. The internal Address
Pointer will automatically roll over from address 7F to
address 00h.
FIGURE 8-1:
CURRENT ADDRESS READ
Bus Activity
Master
S
T
A
R
T
Control
Byte
Data
S
T
O
P
SDA Line
Bus Activity
? 2009 Microchip Technology Inc.
S
A
C
K
N
O
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K
P
DS22129A-page 11
相关PDF资料 |
PDF描述 |
|---|---|
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 24VL014T | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:1K I2C? Serial EEPROM |
| 24VL014T/MNY | 功能描述:电可擦除可编程只读存储器 1K 128 X 8 SERIAL EE 1.5V RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 |
| 24VL014T/MNY-CUT TAPE | 制造商:Microchip 功能描述:24VL014 Series 1 Kb I2C 2 Wire (128 x 8) 1.5 V Serial EEPROM SMT - TDFN-8 |
| 24VL014T/MS | 功能描述:电可擦除可编程只读存储器 1K 128 X 8 SERIAL EE 1.5V RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 |
| 24VL014T/OT | 功能描述:电可擦除可编程只读存储器 1K 128 X 8 SERIAL EE 1.5V RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 |
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