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25LC080 Datasheet(PDF) 9 Page - Microchip Technology

Part # 25LC080
Description  8K SPI Bus Serial EEPROM
Download  22 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

25LC080 Datasheet(HTML) 9 Page - Microchip Technology

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 1997-2012 Microchip Technology Inc.
DS21230E-page 9
25AA080/25LC080/25C080
3.4
Write Enable (WREN) and Write
Disable (WRDI)
The 25XX080 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.
The following is a list of conditions under which the
write enable latch will be reset:
• Power-up
• WRDI instruction successfully executed
• WRSR instruction successfully executed
• WRITE instruction successfully executed
FIGURE 3-4:
WRITE ENABLE SEQUENCE
FIGURE 3-5:
WRITE DISABLE SEQUENCE
SCK
0
2
34
56
7
1
SI
High-impedance
SO
CS
01
00
00
0
1
SCK
0
2345
67
1
SI
High-impedance
SO
CS
01
00
00
0
10


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