- 您现在的位置：买卖IC网 > Sheet目录312 > AT24C64W-10SI-1.8 (Atmel)IC EEPROM 64KBIT 400KHZ 8SOIC
Read
Operations
Read operations are initiated the same way as write operations with the exception that the
read/write select bit in the device address word is set to one. There are three read operations:
current address read, random address read and sequential read.
CURRENT ADDRESS READ: The internal data word address counter maintains the last
address accessed during the last read or write operation, incremented by one. This address
stays valid between operations as long as the chip power is maintained. The address “roll
over” during read is from the last byte of the last memory page, to the first byte of the first
page. The address “roll over” during write is from the last byte of the current page to the first
byte of the same page.
Once the device address with the read/write select bit set to one is clocked in and acknowl-
edged by the EEPROM, the current address data word is serially clocked out. The
microcontroller does not respond with an input zero but does generate a following stop condi-
tion (refer to Figure 4).
RANDOM READ: A random read requires a “dummy” byte write sequence to load in the data
word address. Once the device address word and data word address are clocked in and
acknowledged by the EEPROM, the microcontroller must generate another start condition.
The microcontroller now initiates a current address read by sending a device address with the
read/write select bit high. The EEPROM acknowledges the device address and serially clocks
out the data word. The microcontroller does not respond with a zero but does generate a fol-
lowing stop condition (refer to Figure 5).
SEQUENTIAL READ: Sequential reads are initiated by either a current address read or a ran-
dom address read. After the microcontroller receives a data word, it responds with an
acknowledge. As long as the EEPROM receives an acknowledge, it will continue to increment
the data word address and serially clock out sequential data words. When the memory
address limit is reached, the data word address will “roll over” and the sequential read will con-
tinue. The sequential read operation is terminated when the microcontroller does not respond
with a zero but does generate a following stop condition (refer to Figure 6).
10
AT24C32/64
0336K–SEEPR–7/03
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
AT24HC02B-TH-B
IC EEPROM 2KBIT 1MHZ 8TSSOP
AT25040A-10TU-1.8
IC EEPROM 4KBIT 20MHZ 8TSSOP
AT25040N-10SI-2.7
IC EEPROM 4KBIT 2.1MHZ 8SOIC
AT25128AW-10SU-2.7
IC EEPROM 128KBIT 20MHZ 8SOIC
AT25160B-XHL-T
IC EEPROM 16KBIT 20MHZ 8TSSOP
AT25256B-SSHL-B
IC EEPROM 256KBIT 20MHZ 8SOIC
AT25256T2-10TI-2.7
IC EEPROM 256KBIT 3MHZ 20TSSOP
AT25320AY6-10YH-1.8
IC EEPROM 32KBIT 20MHZ 8DFN
相关代理商/技术参数
AT24C64W-10SI-2.5
功能描述:IC EEPROM 64KBIT 400KHZ 8SO 制造商:microchip technology 系列:- 包装:管件 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:64Kb （8K 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:2.5 V ~ 5.5 V 工作温度:-40°C ~ 85°C（TA） 安装类型:表面贴装 封装/外壳:8-SOIC（0.209"，5.30mm 宽） 供应商器件封装:8-SOIC 基本零件编号:AT24C64 标准包装:94
AT24C64W-10SI-2.7
功能描述:电可擦除可编程只读存储器 32/64k 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
AT24C94AN-10SI-2.7
制造商:Atmel Corporation 功能描述:
AT24CM01-SHD-B
制造商:Atmel Corporation 功能描述:Cap Film 0.27uF 400V PP 10% (18 X 7.5 X 13.5mm) Radial 15mm 105°C Pizza Pack 制造商:Atmel Corporation 功能描述:8 EIAJ SOIC, PB/HALO FREE, NIPDAU, 2.5V - Bulk 制造商:Atmel Corporation 功能描述:IC EEPROM 1MBIT 1MHZ 8SOIC 制造商:Atmel Corporation 功能描述:SERIAL EEPROM, 1M 2-WIR-8 EIAJ SOIC 制造商:Atmel 功能描述:Cap Film 0.27uF 400V PP 10% (18 X 7.5 X 13.5mm) Radial 15mm 105°C Pizza Pack
AT24CM01-SHD-B SL901
制造商:Atmel Corporation 功能描述:IC EEPROM 1MBIT 1MHZ 8SOIC
AT24CM01-SHD-T
制造商:Atmel Corporation 功能描述:EEPROM Serial-I2C 1M-bit 128K x 8 3.3V/5V 8-Pin SOIC EIAJ T/R 制造商:Atmel Corporation 功能描述:SERIAL EEPROM, 1M (128K X 8), 2-WIR - 8 EIAJ SOIC, PB/HALO F - Tape and Reel 制造商:Atmel 功能描述:SERIAL EE 制造商:Atmel Corporation 功能描述:IC EEPROM 1MBIT 1MHZ 8SOIC 制造商:Atmel Corporation 功能描述:SERIAL EEPROM, 1M 2-WIR-8 EIAJ SOIC
AT24CM01-SHM-B
制造商:Atmel Corporation 功能描述:SERIAL EEPROM, 1M (128K X 8), 2-WIR - 8 EIAJ SOIC, PB/HALO F - Bulk 制造商:Atmel Corporation 功能描述:IC EEPROM 1MBIT 1MHZ 8SOIC 制造商:Atmel Corporation 功能描述:SERIAL EEPROM, 1M 2-WIR-8 EIAJ SOIC 制造商:Atmel 功能描述:Cap Film 0.056uF 250V PP 2% (10 X 4 X 8mm) Radial 7.5mm 105°C Ammo Pack
AT24CM01-SHM-T
制造商:Atmel Corporation 功能描述:SERIAL EEPROM, 1M (128K X 8), 2-WIR - 8 EIAJ SOIC, PB/HALO F - Tape and Reel 制造商:Atmel Corporation 功能描述:IC EEPROM 1MBIT 1MHZ 8SOIC 制造商:Atmel Corporation 功能描述:SERIAL EEPROM, 1M 2-WIR-8 EIAJ SOIC 制造商:Atmel 功能描述:Res Thin Film 2512 10K Ohm 0.5% 1/2W ±50ppm/°C Molded SMD Plastic T/R