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参数资料
| 型号： | 24VL014/SN |
| 厂商： | Microchip Technology |
| 文件页数： | 8/30页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 1KBIT 400KHZ 8SOIC |
| 标准包装： | 100 |
| 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-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 管件 |
| 产品目录页面： | 1443 (CN2011-ZH PDF) |
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24VL014
5.0
DEVICE ADDRESSING
FIGURE 5-1:
CONTROL BYTE FORMAT
A control byte is the first byte received following the
Start condition from the master device (Figure 5-1).
Read/Write Bit
The control byte consists of a four-bit control code; for
the 24VL014 this is set as ‘ 1010 ’ binary for read and
write operations. The next three bits of the control byte
Control Code
Chip Select
Bits
are the Chip Select bits (A2, A1, A0). The Chip Select
S
1
0
1
0
A2
A1
A0 R/W ACK
bits allow the use of up to eight 24VL014 devices on the
same bus and are used to select which device is
accessed. The Chip Select bits in the control byte must
Slave Address
correspond to the logic levels on the corresponding A2,
A1 and A0 pins for the device to respond. These bits
are in effect the three Most Significant bits of the word
address.
Start Bit
5.1
Acknowledge Bit
Contiguous Addressing Across
For the SOT-23 package, the A2 pin is not connected.
During device addressing, the A2 chip select bit should
be set to logic ‘ 0 ’. Only four 24VL014 SOT-23 devices
can be connected to the same bus.
The last bit of the control byte defines the operation to
be performed. When set to a ‘ 1 ’, a read operation is
selected. When set to a ‘ 0 ’, a write operation is
selected. Following the Start condition, the 24VL014
monitors the SDA bus, checking the control byte being
transmitted. Upon receiving a ‘ 1010 ’ code and appro-
priate Chip Select bits, the slave device outputs an
Acknowledge signal on the SDA line. Depending on the
state of the R/W bit, the 24VL014 will select a read or
write operation.
DS22129A-page 8
Multiple Devices
The Chip Select bits A2, A1 and A0 can be used to
expand the contiguous address space for up to 8K bits
by adding up to eight 24VL014 devices on the same
bus. In this case, software can use A0 of the control
byte as address bit A7, A1 as address bit A8, and A2
as address bit A9. It is not possible to sequentially read
across device boundaries.
For the SOT-23 package, up to four devices can be
added for up to 4 Kbit of address space. In this case,
software can use A0 of the control byte as address bit
A7, and A1 as address bit A8. Bit A2 of the control byte
must always be set to logic ‘ 0 ’ for the SOT-23 package.
? 2009 Microchip Technology Inc.
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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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