参数资料
| 型号： | AT24C64W-10SI-2.7 |
| 厂商： | Atmel |
| 文件页数： | 10/19页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 64KBIT 400KHZ 8SOIC |
| 标准包装： | 94 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 64K (8K x 8) |
| 速度： | 100kHz，400kHz |
| 接口： | I²C，2 线串口 |
| 电源电压： | 2.7 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： | 管件 |
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
相关PDF资料 |
PDF描述 |
|---|---|
| AT24C64N-10SI-2.7 | IC EEPROM 64KBIT 400KHZ 8SOIC |
| AT24C64-10PI-2.7 | IC EEPROM 64KBIT 400KHZ 8DIP |
| AT24C32W-10SI-2.7 | IC EEPROM 32KBIT 400KHZ 8SOIC |
| AT24C32N-10SI-2.7 | IC EEPROM 32KBIT 400KHZ 8SOIC |
| AT24C32-10PI-2.7 | IC EEPROM 32KBIT 400KHZ 8DIP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
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