AT24C128/256
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 on
page 9). Data changes during SCL high periods will indicate a start or stop condition as
defined below.
START CONDITION: A high-to-low transition of SDA with SCL high is a start condition which
must precede any other command (see Figure 5 on page 9).
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 5 on page 9).
ACKNOWLEDGE: All addresses and data words are serially transmitted to and from the
EEPROM in 8-bit words. The EEPROM sends a zero during the ninth clock cycle to acknowl-
edge that it has received each word.
STANDBY MODE: The AT24C128/256 features a low power standby mode which is enabled:
a) upon power-up and b) after the receipt of the STOP bit and the completion of any internal
operations.
MEMORY RESET: After an interruption in protocol, power loss or system reset, any two-wire
part can be reset by following these steps: (a) Clock up to 9 cycles, (b) look for SDA high in
each cycle while SCL is high and then (c) create a start condition as SDA is high.
7
0670T–SEEPR–3/07
相关PDF资料
AT24C164-10SU-1.8 IC EEPROM 16KBIT 1MHZ 8SOIC
AT24C16AY6-10YH-1.8 IC EEPROM 16KBIT 400KHZ 8DFN
AT24C16BY6-YH-T IC EEPROM 16KBIT 1MHZ 8DFN
AT24C256BW-SH-T IC EEPROM 256KBIT 1MHZ 8SOIC
AT24C256C-XHL-B IC EEPROM 256KBIT IND 8TSSOP
AT24C32AY6-10YH-1.8 IC EEPROM 32KBIT 400KHZ 8DFN
AT24C512BY7-YH25-T IC EEPROM 512KBIT 1MHZ 8SAP
AT24C512W-10SU-1.8 IC EEPROM 512KBIT 400KHZ 8SOIC
相关代理商/技术参数
AT24C128Y1-10YU-1.8 SL383 功能描述:IC EEPROM 128KBIT 400KHZ 8MAP RoHS:是 类别:集成电路 (IC) >> 存储器 系列:- 标准包装:378 系列:- 格式 - 存储器:闪存 存储器类型:FLASH 存储容量:8M(1M x 8,512K x 16) 速度:110ns 接口:并联 电源电压:2.7 V ~ 3.6 V 工作温度:-40°C ~ 85°C 封装/外壳:48-CBGA 供应商设备封装:48-CBGA(7x7) 包装:托盘
AT24C128Y1-10YU-1.8-T 功能描述:IC EEPROM 128KBIT 400KHZ 8MAP 制造商:microchip technology 系列:- 包装:带卷(TR) 零件状态:停產 存储器类型:非易失 存储器格式:EEPROM 技术:EEPROM 存储容量:128Kb (16K x 8) 时钟频率:400kHz 写周期时间 - 字,页:10ms 访问时间:900ns 存储器接口:I2C 电压 - 电源:1.8 V ~ 3.6 V 工作温度:-40°C ~ 85°C(TA) 安装类型:表面贴装 封装/外壳:8-UDFN 裸露焊盘 供应商器件封装:8-MAP(3x4.9) 基本零件编号:AT24C128 标准包装:5,000
AT24C128Y4-10YU-1.8 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Two-wire Serial EEPROMs
AT24C16 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Two-wire Automotive Serial EEPROM
AT24C16-10PA-2.7C 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Two-wire Automotive Serial EEPROM
AT24C16-10PA-5.0C 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Two-wire Automotive Serial EEPROM
AT24C16-10PC 功能描述:电可擦除可编程只读存储器 16k 2-Wire Bus 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
AT24C16-10PC-1.8 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:2-Wire Serial EEPROM