参数资料
| 型号： | AT24C01B-TH-T |
| 厂商： | Atmel |
| 文件页数： | 9/25页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 1KBIT 1MHZ 8TSSOP |
| 标准包装： | 5,000 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 1K (128 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-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 8-TSSOP |
| 包装： | 带卷 (TR) |
AT24C01B
6. Device Addressing
The 1K EEPROM device requires an 8-bit device address word following a start condition to
enable the chip for a read or write operation (refer to Figure 8-1 ).
The device address word consists of a mandatory one, zero sequence for the first four most sig-
nificant bits as shown. This is common to all the EEPROM devices.
The next 3 bits are the A2, A1 and A0 device address bits for the 1K EEPROM. These 3 bits
must compare to their corresponding hard-wired input pins.
The eighth bit of the device address is the read/write operation select bit. A read operation is ini-
tiated if this bit is high and a write operation is initiated if this bit is low.
Upon a compare of the device address, the EEPROM will output a zero. If a compare is not
made, the chip will return to a standby state.
7. Write Operations
BYTE WRITE: A write operation requires an 8-bit data word address following the device
address word and acknowledgment. Upon receipt of this address, the EEPROM will again
respond with a zero and then clock in the first 8-bit data word. Following receipt of the 8-bit data
word, the EEPROM will output a zero and the addressing device, such as a microcontroller,
must terminate the write sequence with a stop condition. At this time the EEPROM enters an
internally timed write cycle, t WR , to the nonvolatile memory. All inputs are disabled during this
write cycle and the EEPROM will not respond until the write is complete (see Figure 8-2 on page
10 ).
PAGE WRITE: The 1K EEPROM is capable of an 8-byte page write.
A page write is initiated the same as a byte write, but the microcontroller does not send a stop
condition after the first data word is clocked in. Instead, after the EEPROM acknowledges
receipt of the first data word, the microcontroller can transmit up to seven data words. The
EEPROM will respond with a zero after each data word received. The microcontroller must ter-
minate the page write sequence with a stop condition (see Figure 8-3 on page 11 ).
The data word address lower three bits are internally incremented following the receipt of each
data word. The higher data word address bits are not incremented, retaining the memory page
row location. When the word address, internally generated, reaches the page boundary, the fol-
lowing byte is placed at the beginning of the same page. If more than eight data words are
transmitted to the EEPROM, the data word address will “roll over” and previous data will be
overwritten.
ACKNOWLEDGE POLLING: Once the internally timed write cycle has started and the
EEPROM inputs are disabled, acknowledge polling can be initiated. This involves sending a
start condition followed by the device address word. The read/write bit is representative of the
operation desired. Only if the internal write cycle has completed will the EEPROM respond with
a zero allowing the read or write sequence to continue.
9
5156E–SEEPR–10/08
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AT24C01BTH-T | 制造商:Atmel Corporation 功能描述:EEPROM Serial-2Wire 1K-bit 128 x 8 2.5V/3.3V/5V 8-Pin TSSOP T/R |
| AT24C01B-TP25-B | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Two-wire Automotive Temperature Serial EEPROM |
| AT24C01B-TP25-T | 制造商:Atmel Corporation 功能描述: |
| AT24C01B-TSU-T | 功能描述:电可擦除可编程只读存储器 NIPDAU AUTO 2.5V - IND 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 |
| AT24C01BU3-UU-T | 功能描述:电可擦除可编程只读存储器 1.8V-IND 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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