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参数资料
| 型号： | PCA24S08AD,118 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 10/24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
6.4.2.1
Block 0 write protection bits
The PCA24S08A provides a mechanism to divide block 0 into eight 128-bit (16-byte)
pages that can be individually protected against writes. These eight write protection
(WPN) bits are stored within a byte of the access protection page and are organized such
that the LSB protects the first 128 bits, and so on. If a bit in this byte is set to a one and the
PB0 field is set to 11b, then writes are permitted on the page corresponding to the WPN
bit. If the WPN bit is set to a logic 0 or the PB0 is any value other than 11b, then writes are
not permitted in that page.
The Write Protection hierarchy for serial accesses is shown in Figure 10 . In this drawing
the bits within the boxes to the left of the arrows are the only thing that determine whether
or not the bit in the box to the right of the arrow can be written. Read access control is not
shown in this diagram. Addresses listed in this diagram are for the serial port assuming
that the R/W bit in the command byte is set to ‘0’.
WP
SB0
PB0
Page 0
16 bytes
A800
A80F
SBAP
PBAP
WPN0
Page 1
16 bytes
A810
A81F
WPN1
Page 7
A870
Block 0
WPN7
16 bytes
A87F
A880
SB1
SB7
PB1
PB7
Block 1
128 bytes
Block 7
128 bytes
A8FF
AE80
AEFF
SB0
SB0
PB0 B800
SB1
SB1
PB1 B801
Access
SB7
SB7
SBAP
PB7 B807
PBAP B808
Protection
Page
B809
7 bytes
SBAP
PBAP
ID page
16 bytes
B80F
B810
B81F
002aae842
Fig 10. Write protection example
PCA24S08A_1
? NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 01 — 19 January 2010
10 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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