参数资料
| 型号： | AT34C02C-TH-B |
| 厂商： | Atmel |
| 文件页数： | 7/21页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 2KBIT 400KHZ 8TSSOP |
| 标准包装： | 100 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 2K (256 x 8) |
| 速度： | 100kHz，400kHz |
| 接口： | I²C，2 线串口 |
| 电源电压： | 1.7 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： | 管件 |
| 产品目录页面： | 1456 (CN2011-ZH PDF) |
Atmel AT34C02C
Figure 4-5.
Output acknowledge
5.
6.
Device addressing
The 2K EEPROM device requires an 8-bit device address word following a start condition to enable the chip for a read or
write operation (see Figure 8-1 on page 12 ).
The device address word consists of a mandatory one-zero sequence for the first four most-significant bits (1010) for
normal read and write operations and 0110 for writing to the write protect register.
The next three bits are the A2, A1, and A0 device address bits for the Atmel AT34C02C EEPROM. These three 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 initiated 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. The device will not acknowledge if the write protect register has been programmed and the control code is
0110.
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 12 ).
The device will acknowledge a write command, but not write the data, if the software or hardware write protection has
been enabled. The write cycle time must be observed even when the write protection is enabled.
PAGE WRITE: The 2K device is capable of 16-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 fifteen more data words. The EEPROM will respond with a zero after each data word received. The microcontroller
must terminate the page write sequence with a stop condition (see Figure 8-3 on page 12 ).
7
5185E–SEEPR–3/11
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AT34C02C-TH-T | 功能描述:电可擦除可编程只读存储器 PB/ 1.8V - PB/ 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 |
| AT34C02C-TP25-B | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Two-wire Automotive Temperature Serial EEPROM with Permanent and Reversible Software Write Protect |
| AT34C02C-TP25-T | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Two-wire Automotive Temperature Serial EEPROM with Permanent and Reversible Software Write Protect |
| AT34C02CU3-UU-T | 功能描述:电可擦除可编程只读存储器 NIPDAU 1.7V 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 |
| AT34C02CY6-YH-T | 功能描述:电可擦除可编程只读存储器 8 THIN MINI MAP 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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