参数资料
型号: 25C040-I/P
厂商: Microchip Technology
文件页数: 9/22页
文件大小: 0K
描述: IC EEPROM 4KBIT 3MHZ 8DIP
标准包装: 60
格式 - 存储器: EEPROMs - 串行
存储器类型: EEPROM
存储容量: 4K (512 x 8)
速度: 3MHz
接口: SPI 3 线串行
电源电压: 4.5 V ~ 5.5 V
工作温度: -40°C ~ 85°C
封装/外壳: 8-DIP(0.300",7.62mm)
供应商设备封装: 8-PDIP
包装: 管件
产品目录页面: 1448 (CN2011-ZH PDF)
25AA040/25LC040/25C040
3.4
Write Enable (WREN) and Write
Disable (WRDI)
The following is a list of conditions under which the
write enable latch will be reset:
The 25XX040 contains a write enable latch. See
Table 3-3 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 3-4:
WRITE ENABLE SEQUENCE
CS
?
?
?
?
?
Power-up
WRDI instruction successfully executed
WRSR instruction successfully executed
WRITE instruction successfully executed
WP line is low
0
1
2
3
4
5
6
7
SCK
SI
0
0
0
0
0
1
1
0
High-impedance
SO
FIGURE 3-5:
WRITE DISABLE SEQUENCE
CS
0
1
2
3
4
5
6
7
SCK
SI
0
0
0
0
0
1
1 0
0
High-impedance
SO
? 2006 Microchip Technology Inc.
DS21204E-page 9
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25C040N 制造商:未知厂家 制造商全称:未知厂家 功能描述:EEPROM
25C040-P 制造商:未知厂家 制造商全称:未知厂家 功能描述:SPI Serial EEPROM
25C040-SN 制造商:未知厂家 制造商全称:未知厂家 功能描述:SPI Serial EEPROM
25C040ST 制造商:未知厂家 制造商全称:未知厂家 功能描述:EEPROM