参数资料
| 型号： | AT34C02CN-SH-T |
| 厂商： | Atmel |
| 文件页数： | 11/21页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 2KBIT 400KHZ 8SOIC |
| 标准包装： | 1 |
| 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-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 标准包装 |
| 其它名称： | AT34C02CN-SH-TDKR |
Atmel AT34C02C
Table 7-4.
WP connected to Vcc
WP connected to Vcc
Permanent write
Reversible write
protect register
protect register
Acknowledgment
Command
1010
1010
Read PSWP
Read PSWP
Set PSWP
Set PSWP
Read RSWP
Read RSWP
Set RSWP
Set RSWP
Clear RSWP
Clear RSWP
R/W bit
R
W
R
R
W
W
R
R
W
W
W
W
PSWP
X
X
Programmed
Not programmed
Programmed
Not programmed
X
X
X
X
Programmed
Not programmed
RSWP
X
X
X
X
X
X
Programmed
Not programmed
Programmed
Not programmed
X
X
from device
ACK
ACK
No ACK
ACK
No ACK
ACK
No ACK
ACK
No ACK
ACK
No ACK
ACK
Action from device
Read array
Device write protect
STOP - Indicates permanent write protect register is
programmed
Read out data don't care. Indicates PSWP register is not
programmed
STOP - Indicates permanent write protect register is
programmed
Cannot program write protect registers
STOP - Indicates reversible write protect register is
programmed
Read out data don't care. Indicates RSWP register is not
programmed
STOP - Indicates reversible write protect register is
programmed
Cannot program write protect registers
STOP - Indicates permanent write protect register is
programmed
Cannot write to write protect registers
8.
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
? 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.
Once the device address with the read/write select bit set to one is clocked in and acknowledged by the EEPROM, the
current address data word is serially clocked out. To end the command, the microcontroller does not respond with an input
zero but does generate a following stop condition (see Figure 8-4 on page 13 ).
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. To end
the command, the microcontroller does not respond with a zero but does generate a following stop condition (see Figure
8-5 on page 13 ).
11
5185E–SEEPR–3/11
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相关代理商/技术参数 |
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| AT34C02CN-SP25-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 |
| AT34C02CN-SP25-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 |
| AT34C02C-TH-B | 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-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 |
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