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参数资料
| 型号： | PCA24S08AD,118 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 9/24页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 8KBIT 400KHZ 8SOIC |
| 标准包装： | 2,500 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 8K (1K x 8) |
| 速度： | 400kHz |
| 接口： | I²C，2 线串口 |
| 电源电压： | 2.5 V ~ 3.6 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-SO |
| 包装： | 带卷 (TR) |
NXP Semiconductors
PCA24S08A
1024 × 8-bit CMOS EEPROM with access protection
Accessed within the Access Protection Page is an individual CMOS Sticky Bit (SB) for
each of the 8 blocks on the device. When the value of the sticky bit is ‘0’, the Protection
Bits (PB) for the corresponding block may not be changed via the software. These bits are
all set to logic 1 when power is initially applied or when the PROT pin is LOW. These
sticky bits may be written only to a ‘0’ via the serial interface using the standard serial write
operations. Reading the sticky bits does not affect their state.
Because permissions are set individually for each of the blocks, all reads via serial port
will only read bytes within the block that was specified when the current address was
latched in the device (with a write command). The block address bits (B2 or B1) that are
sent with the write command are ignored on a read command.
When a sticky bit is cleared (programmed at 0), the byte containing the sticky bit cannot
be changed anymore. If a write operation to this byte is attempted, it will be normally
acknowledged but no change will happen in the byte value. The device does not go to an
E/W cycle and can be accessed immediately.
If a block is protected and only read operation is allowed (the corresponding APP register
has its PB bits programmed to 10b), a write operation to this block is not acknowledged
(Slave Address and Register pointer only are acknowledged). The device does not go to
an E/W cycle and can be accessed immediately.
S – Addr+W – ACK – Reg Pointer – ACK – Data – NACK
This applies to:
? EEPROM block 0 to block 7, controlled by PB0 to PB7.
? The last 7 bytes of the APP block (09h to 0Fh) and the ID page (10h to 1Fh) controlled
by PBAP.
If a block is protected and neither read operation nor write operation is allowed (the
corresponding APP register has its PB bits programmed to 00b or 01b), a write operation
to this block is not acknowledged (Slave Address and Register pointer only are
acknowledged).
S – Addr+W – ACK – Reg Pointer – ACK – Data – NACK
A read operation to this block is not allowed.
S – Addr+W – ACK – Reg Pointer – ACK – Sr – Addr+R – NACK
S – Addr+W – ACK – Reg Pointer – ACK – P – S – Addr+R – NACK
This applies to:
? EEPROM block 0 to block 7, controlled by PB0 to PB7.
? The last 7 bytes of the APP block (09h to 0Fh) and the ID page (10h to 1Fh) controlled
by PBAP.
PCA24S08A_1
? NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 01 — 19 January 2010
9 of 24
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PCA24S08ADP | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:1024 x 8-bit CMOS EEPROM with access protection |
| PCA24S08ADP,118 | 功能描述:电可擦除可编程只读存储器 CMOS 电可擦除可编程只读存储器 W/ACCESS PROTECTION 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 |
| PCA24S08D | 功能描述:电可擦除可编程只读存储器 1024X8 CMOS 电可擦除可编程只读存储器 ACCESS PROT 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 |
| PCA24S08D,112 | 功能描述:电可擦除可编程只读存储器 1024X8 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 |
| PCA24S08D,118 | 功能描述:电可擦除可编程只读存储器 1024X8 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 |
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