参数资料
型号: 25AA1024T-I/MF
厂商: Microchip Technology
文件页数: 11/34页
文件大小: 0K
描述: IC EEPROM 1MBIT 20MHZ 8DFN
标准包装: 3,300
格式 - 存储器: EEPROMs - 串行
存储器类型: EEPROM
存储容量: 1M (128K x 8)
速度: 20MHz
接口: SPI 3 线串行
电源电压: 1.8 V ~ 5.5 V
工作温度: -40°C ~ 85°C
封装/外壳: 8-VDFN 裸露焊盘
供应商设备封装: 8-DFN-S(6x5)
包装: 带卷 (TR)
其它名称: 25AA1024T-I/MFTR
25AA1024
2.3
Write Enable ( WREN ) and Write
Disable ( WRDI )
The following is a list of conditions under which the
write enable latch will be reset:
The 25AA1024 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.
?
?
?
?
?
?
?
Power-up
WRDI instruction successfully executed
WRSR instruction successfully executed
WRITE instruction successfully executed
PE instruction successfully executed
SE instruction successfully executed
CE instruction successfully executed
FIGURE 2-4:
WRITE ENABLE SEQUENCE ( WREN )
CS
0
1
2
3
4
5
6
7
SCK
SI
0
0
0
0
0
1
1
0
SO
High-Impedance
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
? 2010 Microchip Technology Inc.
DS21836H-page 11
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