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| 型号： | AT24C256BW-SH-T |
| 厂商： | Atmel |
| 文件页数： | 6/24页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 256KBIT 1MHZ 8SOIC |
| 标准包装： | 2,000 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 256K (32K x 8) |
| 速度： | 400kHz，1MHz |
| 接口： | I²C，2 线串口 |
| 电源电压： | 1.8 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-SOIC（0.209"，5.30mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
4. Device Operation
CLOCK and DATA TRANSITIONS: The SDA pin is normally pulled high with an external device.
Data on the SDA pin may change only during SCL low time periods (see Figure 4-1 ). Data
changes during SCL high periods will indicate a start or stop condition as defined below.
Figure 4-1.
Data Validity
SDA
SCL
DATA STABLE
DATA STABLE
DATA
CHANGE
START CONDITION: A high-to-low transition of SDA with SCL high is a start condition that must
precede any other command (see Figure 4-2 ).
Figure 4-2.
Start and Stop Definition
SDA
SCL
START
STOP
STOP CONDITION: A low-to-high transition of SDA with SCL high is a stop condition. After a
read sequence, the stop command will place the EEPROM in a standby power mode (see Fig-
ure 4-2 ).
ACKNOWLEDGE: All addresses and data words are serially transmitted to and from the
EEPROM in 8-bit words. The EEPROM sends a “0” during the ninth clock cycle to acknowledge
that it has received each word.
STANDBY MODE: The AT24C256B features a low-power standby mode that is enabled upon
power-up and after the receipt of the stop bit and the completion of any internal operations.
6
AT24C256B
5279C–SEEPR–3/09
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AT24C256BY1-10YU-1.8 | 功能描述:电可擦除可编程只读存储器 8 MAP 1.8V - 8 MAP 1.8V 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 |
| AT24C256BY7-YH-T | 制造商:Atmel Corporation 功能描述:EEPROM Serial-2Wire 256K-Bit 32K x 8 2.5V/3.3V/5V 8-Pin UTSAP EP T/R |
| AT24C256C-CUL-B | 制造商:Atmel Corporation 功能描述:SERIAL EEPROM, 256K (32K X 8) - Bulk |
| AT24C256C-CUL-T | 制造商:Atmel Corporation 功能描述: |
| AT24C256C-MAHL-T | 功能描述:电可擦除可编程只读存储器 256K (32K X 8) 2-WI 1.8V 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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