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AT24C64B
5. 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 (refer to Data Valid-
ity timing diagram). 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 (refer to Start and Stop Definition timing diagram).
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 (refer to
Start and Stop Definition timing diagram).
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 AT24C64B 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 2-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.
5
3350E–SEEPR–9/07
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相关代理商/技术参数
AT24C64B-10TU-2.7 功能描述:电可擦除可编程只读存储器 10MS IND TEMP 2.7V 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
AT24C64B-10TU-2.7 SL383 制造商:Atmel Corporation 功能描述:EEPROM Serial-2Wire 64K-Bit 8K x 8 3.3V/5V 8-Pin TSSOP T/R 制造商:Atmel Corporation 功能描述:EEPROM SERL-2WIRE 64KBIT 8KX8 3.3V/5V 8TSSOP - Tape and Reel
AT24C64BN-10SI-2.7 制造商:Atmel Corporation 功能描述:
AT24C64BN-10SU-1.8 功能描述:电可擦除可编程只读存储器 8 NIPDAU LF 2.7V - 10MS 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
AT24C64BN-10SU-1.8 SL383 制造商:Atmel Corporation 功能描述:EEPROM SERL-2WIRE 64KBIT 8KX8 2.5V/3.3V/5V 8SOIC - Tape and Reel
AT24C64BN-10SU-2.7 功能描述:电可擦除可编程只读存储器 8 NIPDAU LF 2.7V - 10MS 2.7V 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
AT24C64BN-10SU-2.7 SL383 制造商:Atmel Corporation 功能描述:EEPROM Serial-2Wire 64K-Bit 8K x 8 3.3V/5V 8-Pin SOIC T/R 制造商:Atmel Corporation 功能描述:EEPROM SERL-2WIRE 64KBIT 8KX8 3.3V/5V 8SOIC - Tape and Reel
AT24C64BN-10SU-2.7SL383 制造商:Atmel Corporation 功能描述: