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参数资料
| 型号： | PCA24S08AD,118 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 8/24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
auto-increment
word address
auto-increment
word address
S
1
0
1
0
1
X
X
1
A
DATA
A
DATA
A
P
n bytes
last byte
START condition
R/W
acknowledge
from slave
acknowledge
from master
no acknowledge
from master
STOP condition
002aae794
Fig 9.
Master read PCA24S08A immediately after first byte (read mode); current address read
6.4 Access protection
Write operation on the Access protection registers can be performed when WP pin is
LOW. If the WP pin is HIGH, all write operations are prohibited from the serial port,
although write commands may be used to set the address for a subsequent read
command.
All access protection bits are stored on a separate page of the EEPROM that is not
accessed using the normal commands of a PCA24S08A memory. See Section 6.4.2.2
“ Access Protection Page (APP) ” for more detail on this information.
6.4.1 RFID access fields (RF)
Even though the PCA24S08A does not have the RFID capability, RFID access fields (RF)
can be stored in order to keep existing software compatibility. The fields are stored in the
EEPROM and organized as shown in Table 3 .
Table 3.
RFID access field organization
MSB
0
0
1
1
LSB
0
1
0
1
Function
no accesses permitted from RFID port
no accesses permitted from RFID port
read only from RFID port
no restrictions for RFID accesses
6.4.2 Protection bits (PB)
The protection bits fields in the Access Protection Page determine what type of accesses
will be permitted via the serial port for each of the blocks on the chip. If an illegal access is
attempted, the command will be NACKed. The MSB (if clear) prohibits all access to the
block, and the LSB (if clear) prohibits writes. The fields are stored in the EEPROM and are
organized as shown in Table 4 .
Table 4.
PB organization
PCA24S08A_1
MSB
0
0
1
1
LSB
0
1
0
1
Function
no accesses permitted in the block
no accesses permitted in the block
read only; writes cause a NACK
read/write; no access constraints for data within this block
? NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 01 — 19 January 2010
8 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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