参数资料
| 型号： | CAV24C08WE-GT3 |
| 厂商： | ON Semiconductor |
| 文件页数： | 6/11页 |
| 文件大小： | 0K |
| 描述： | EEPROM I2C SER 8KB I2C 8SOIC |
| 标准包装： | 1 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 8K (1K x 8) |
| 速度： | 100kHz，400kHz |
| 接口： | I²C，2 线串口 |
| 电源电压： | 2.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 标准包装 |
| 其它名称： | CAV24C08WE-GT3OSDKR |
CAV24C02, CAV24C04, CAV24C08, CAV24C16
WRITE OPERATIONS
Byte Write
In Byte Write mode, the Master sends the START
condition and the Slave address with the R/W bit set to zero
to the Slave. After the Slave generates an acknowledge, the
Master sends the byte address that is to be written into the
address pointer of the CAV24Cxx. After receiving another
acknowledge from the Slave, the Master transmits the data
byte to be written into the addressed memory location. The
CAV24Cxx device will acknowledge the data byte and the
Master generates the STOP condition, at which time the
device begins its internal Write cycle to nonvolatile memory
(Figure 6). While this internal cycle is in progress (t WR ), the
SDA output will be tri ? stated and the CAV24Cxx will not
respond to any request from the Master device (Figure 7).
Page Write
The CAV24Cxx writes up to 16 bytes of data in a single
write cycle, using the Page Write operation (Figure 8). The
Page Write operation is initiated in the same manner as the
Byte Write operation, however instead of terminating after
the data byte is transmitted, the Master is allowed to send up
to fifteen additional bytes. After each byte has been
transmitted the CAV24Cxx will respond with an
acknowledge and internally increments the four low order
address bits. The high order bits that define the page address
remain unchanged. If the Master transmits more than sixteen
bytes prior to sending the STOP condition, the address
counter ‘wraps around’ to the beginning of page and
previously transmitted data will be overwritten. Once all
sixteen bytes are received and the STOP condition has been
sent by the Master, the internal Write cycle begins. At this
point all received data is written to the CAV24Cxx in a single
write cycle.
Acknowledge Polling
The acknowledge (ACK) polling routine can be used to
take advantage of the typical write cycle time. Once the stop
condition is issued to indicate the end of the host’s write
operation, the CAV24Cxx initiates the internal write cycle.
The ACK polling can be initiated immediately. This
involves issuing the start condition followed by the slave
address for a write operation. If the CAV24Cxx is still busy
with the write operation, NoACK will be returned. If the
CAV24Cxx has completed the internal write operation, an
ACK will be returned and the host can then proceed with the
next read or write operation.
Hardware Write Protection
With the WP pin held HIGH, the entire memory is
protected against Write operations. If the WP pin is left
floating or is grounded, it has no impact on the operation of
the CAV24Cxx. The state of the WP pin is strobed on the last
falling edge of SCL immediately preceding the first data
byte (Figure 9). If the WP pin is HIGH during the strobe
interval, the CAV24Cxx will not acknowledge the data byte
and the Write request will be rejected.
Delivery State
The CAV24Cxx is shipped erased, i.e., all bytes are FFh.
BUS ACTIVITY:
MASTER
S
T
A
R
T
SLAVE
ADDRESS
ADDRESS
BYTE
a 7 ? a 0
DATA
BYTE
d 7 ? d 0
S
T
O
P
S
P
SLAVE
A
C
K
A
C
K
A
C
K
Figure 6. Byte Write Sequence
http://onsemi.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CAV24C08YE-GT3 | 功能描述:电可擦除可编程只读存储器 8KB I2C SER 电可擦除可编程只读存储器 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 |
| CAV24C128WE-GT3 | 制造商:ON Semiconductor 功能描述:128KB I2C SER EEPROM - Tape and Reel 制造商:ON Semiconductor 功能描述:REEL / 128KB I2C SER EEPROM |
| CAV24C128YE-GT3 | 制造商:ON Semiconductor 功能描述:128KB I2C SER EEPROM - Tape and Reel 制造商:ON Semiconductor 功能描述:REEL / 128KB I2C SER EEPROM |
| CAV24C16 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:2-Kb, 4-Kb, 8-Kb and 16-Kb I2C CMOS Serial EEPROM |
| CAV24C16WE-GT3 | 功能描述:电可擦除可编程只读存储器 16KB I2C SER 电可擦除可编程只读存储器 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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