参数资料
| 型号： | CAT25256VI-G |
| 厂商： | ON Semiconductor |
| 文件页数： | 8/20页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 256KBIT 10MHZ 8SOIC |
| 标准包装： | 100 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 256K (32K x 8) |
| 速度： | 10MHz |
| 接口： | SPI 3 线串行 |
| 电源电压： | 1.8 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
| 产品目录页面： | 808 (CN2011-ZH PDF) |
CAT25256
WRITE OPERATIONS
The CAT25256 device powers up into a write disable
state. The device contains a Write Enable Latch (WEL)
which must be set before attempting to write to the memory
array or to the status register. In addition, the address of the
memory location(s) to be written must be outside the
protected area, as defined by BP0 and BP1 bits from the
status register.
Write Enable and Write Disable
The internal Write Enable Latch and the corresponding
Status Register WEL bit are set by sending the WREN
CS
SCK
instruction to the CAT25256. Care must be taken to take the
CS input high after the WREN instruction, as otherwise the
Write Enable Latch will not be properly set. WREN timing
is illustrated in Figure 3. The WREN instruction must be
sent prior to any WRITE or WRSR instruction.
The internal write enable latch is reset by sending the
WRDI instruction as shown in Figure 4. Disabling write
operations by resetting the WEL bit, will protect the device
against inadvertent writes.
SI
0
0
0
0
0
1
1
0
SO
Dashed Line = mode (1, 1)
HIGH IMPEDANCE
Figure 3. WREN Timing
CS
SCK
SI
0
0
0
0
0
1
0
0
SO
Dashed Line = mode (1, 1)
HIGH IMPEDANCE
Figure 4. WRDI Timing
http://onsemi.com
8
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CAT25256VI-G | 制造商:ON Semiconductor 功能描述:IC EEPROM 256KBIT SERIAL 10MHZ SOIC-8 |
| CAT25256VI-GT3 | 功能描述:电可擦除可编程只读存储器 256K SPI Serial CMOS 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 |
| CAT25256XE | 制造商:ON Semiconductor 功能描述: |
| CAT25256XE-T2 | 制造商:ON Semiconductor 功能描述:256KB SPI SER CMOS EEPROM - Tape and Reel |
| CAT25256XI | 功能描述:电可擦除可编程只读存储器 (32kx8) 256K SPI 1.8 to 5.5V 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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