25XX080C/D
2.4
Write Enable ( WREN ) and Write
Disable ( WRDI )
The following is a list of conditions under which the
write enable latch will be reset:
The 25XX080C/D contains a write enable latch. See
Table 2-4 for the Write-Protect Functionality Matrix.
This latch must be set before any write operation will be
completed internally. The WREN instruction will set the
latch, and the WRDI will reset the latch.
FIGURE 2-4:
WRITE ENABLE SEQUENCE ( WREN )
CS
?
?
?
?
Power-up
WRDI instruction successfully executed
WRSR instruction successfully executed
WRITE instruction successfully executed
0
1
2
3
4
5
6
7
SCK
SI
0
0
0
0
0
1
1
0
High-Impedance
SO
FIGURE 2-5:
WRITE DISABLE SEQUENCE ( WRDI )
CS
0
1
2
3
4
5
6
7
SCK
SI
0
0
0
0
0
1
1 0
0
High-Impedance
SO
? 2009 Microchip Technology Inc.
DS22151A-page 9
相关PDF资料
25AA1024T-I/MF IC EEPROM 1MBIT 20MHZ 8DFN
25AA160C-I/P IC SRL EEPROM 2KX8 1.8V 8-PDIP
25AA512T-I/MF IC EEPROM 512KBIT 20MHZ 8DFN
25C040X/ST IC EEPROM 4KBIT 3MHZ 8TSSOP
25C080-I/P IC EEPROM 8KBIT 3MHZ 8DIP
25C320-E/P IC EEPROM 32KBIT 3MHZ 8DIP
25LC010AT-E/MC IC EEPROM 1KBIT 10MHZ 8DFN
25LC040AT-E/MC IC EEPROM 4KBIT 10MHZ 8DFN
相关代理商/技术参数
25AA080C-I/P 功能描述:电可擦除可编程只读存储器 8K 1K X 8 16B PAGE 1.8V SER EE IND 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
25AA080C-I/SN 功能描述:电可擦除可编程只读存储器 8K 1K X 8 16B PAGE 1.8V SER EE IND 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
25AA080C-I/ST 功能描述:电可擦除可编程只读存储器 8K 1K X 8 16B PAGE 1.8V SER EE IND 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
25AA080CT-E/MNY 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8K SPI Bus Serial EEPROM
25AA080CT-E/MS 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8K SPI Bus Serial EEPROM
25AA080CT-E/P 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8K SPI Bus Serial EEPROM
25AA080CT-E/SN 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8K SPI Bus Serial EEPROM
25AA080CT-E/ST 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8K SPI Bus Serial EEPROM