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参数资料
| 型号： | AT25080A-10TI-2.7 |
| 厂商： | ATMEL CORP |
| 元件分类： | PROM |
| 英文描述： | SPI Serial EEPROMs |
| 中文描述： | 1K X 8 SPI BUS SERIAL EEPROM, PDSO8 |
| 封装： | 4.40 MM, PLASTIC, MO-153AA, TSSOP-8 |
| 文件页数： | 23/23页 |
| 文件大小： | 451K |
| 代理商： | AT25080A-10TI-2.7 |
9
AT25080A/160A/320A/640A
3347I–SEEPR–1/05
WRITE STATUS REGISTER (WRSR): The WRSR instruction allows the user to select one of
four levels of protection. The AT25080A/160A/320A/640A is divided into four array segments.
One-quarter, one-half, or all of the memory segments can be protected. Any of the data within
any selected segment will therefore be read only. The block write protection levels and corre-
sponding status register control bits are shown in Table 8.
The three bits BP0, BP1, and WPEN are nonvolatile cells that have the same properties and
functions as the regular memory cells (e.g., WREN, tWC, RDSR).
The WRSR instruction also allows the user to enable or disable the write protect (WP) pin
through the use of the Write Protect Enable (WPEN) bit. Hardware write protection is enabled
when the WP pin is low and the WPEN bit is “1”. Hardware write protection is disabled when
either the WP pin is high or the WPEN bit is “0”. When the device is hardware write protected,
writes to the status register, including the block protect bits and the WPEN bit, and the block-
protected sections in the memory array are disabled. Writes are only allowed to sections of the
memory that are not block-protected.
NOTE: When the WPEN bit is hardware write protected, it cannot be changed back to “0” as
long as the WP pin is held low.
Table 8. Block Write Protect Bits
Level
Status
Register Bits
Array Addresses Protected
BP1
BP0
AT25080A
AT25160A
AT25320A
AT25640A
0
None
1(1/4)
0
1
0300
03FF
0600
07FF
0C00
0FFF
1800
1FFF
2(1/2)
1
0
0200
03FF
0400
07FF
0800
0FFF
1000
1FFF
3(All)
1
0000
03FF
0000
07FF
0000
0FFF
0000
1FFF
Table 9. WPEN Operation
WPEN
WP
WEN
Protected
Blocks
Unprotected
Blocks
Status
Register
0
X
0
Protected
0
X
1
Protected
Writeable
1
Low
0
Protected
1
Low
1
Protected
Writeable
Protected
X
High
0
Protected
X
High
1
Protected
Writeable
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AT25080A-10TQ-2.7 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:SPI Serial EEPROMs |
| AT25080A-10TU-1.8 | 功能描述:电可擦除可编程只读存储器 1.8V 27 MIL - 10MS 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 |
| AT25080A-10TU-1.8 SL383 | 功能描述:电可擦除可编程只读存储器 8K SPI Serial 电可擦除可编程只读存储器 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 |
| AT25080A-10TU-1.8-T | 功能描述:IC EEPROM 8KBIT 20MHZ 8TSSOP 制造商:microchip technology 系列:- 包装:带卷（TR） 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:8Kb （1K x 8） 时钟频率:20MHz 写周期时间 - 字，页:5ms 存储器接口:SPI 电压 - 电源:1.8 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-TSSOP（0.173"，4.40mm 宽） 供应商器件封装:8-TSSOP 基本零件编号:AT25080 标准包装:5,000 |
| AT25080A-10TU-2.7 | 功能描述:电可擦除可编程只读存储器 1.8V 27 MIL - 10MS 2.7V 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 |
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