参数资料
型号: PCA8581T/6,118
厂商: NXP Semiconductors
文件页数: 7/20页
文件大小: 0K
描述: IC EEPROM 1KBIT 100KHZ 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: 1K (128 x 8)
速度: 100kHz
接口: I²C,2 线串口
电源电压: 4.5 V ~ 5.5 V
工作温度: -25°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)
其它名称: 935276987118
PCA8581TD-T
PCA8581TD-T-ND
Philips Semiconductors
128 × 8-bit EEPROM with I 2 C-bus interface
Product speci?cation
PCA8581; PCA8581C
7.5
I 2 C-bus protocol
Before any data is transmitted on the I 2 C-bus, the device which should respond is addressed first. The addressing is
always carried out with the first byte transmitted after the start procedure. The I 2 C-bus configuration for the different
PCA8581 WRITE and READ cycles is shown in Figs 7, 9 and 10.
handbook, full pagewidth
acknowledgement
from slave
acknowledgement
from slave
acknowledgement
from slave
S
SLAVE ADDRESS
0 A X
WORD ADDRESS
A
DATA
A
P
WRITING
R/W don't
care
n bytes
auto increment
t WR
memory word address
MLB889
Fig.7 Master transmits to slave receiver (WRITE) mode.
After the word address, one-to-eight data bytes can be sent. The address is automatically incremented, but the four
highest address bits (row) are internally latched. Therefore all bytes are written in the same row.
An example of writing eight bytes with word address X 0 0 0 0 0 0 0 and six bytes with word address X 0 0 1 0 1 0 1 is
shown in Fig.8.
handbook, full pagewidth
Word Address
(1)
Row
X0000000
0
1
2
3
4
5
6
7
8
X0001...
1
X0010101
2
4
5
6
1
2
3
X0011...
3
column
0
1
2
3
4
5
6
7
MLB890
(1) X = don’t care.
Fig.8 Writing eight and six bytes with different word addresses.
1997 Apr 02
7
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PCA8581TD 功能描述:电可擦除可编程只读存储器 电可擦除可编程只读存储器 128X8 W/I2C 100KHZ 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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