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25C080-E/P Datasheet(PDF) 9 Page - Microchip Technology

No. de pieza 25C080-E/P
Descripción Electrónicos  8K SPI TM Bus Serial EEPROM
PDF  22 Pages
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Fabricante Electrónico  MICROCHIP [Microchip Technology]
Página de inicio  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

25C080-E/P Datasheet(HTML) 9 Page - Microchip Technology

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 2004 Microchip Technology Inc.
DS21230D-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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