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25LC080A-I/MSG Datasheet(PDF) 9 Page - Microchip Technology

No. de pieza 25LC080A-I/MSG
Descripción Electrónicos  8K SPI Bus Serial EEPROM
PDF  24 Pages
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Fabricante Electrónico  MICROCHIP [Microchip Technology]
Página de inicio  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

25LC080A-I/MSG Datasheet(HTML) 9 Page - Microchip Technology

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 2003 Microchip Technology Inc.
DS21808B-page 9
25XX080A/B
2.4
Write Enable (WREN) and Write
Disable (WRDI)
The 25XX080A/B 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.
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 2-4:
WRITE ENABLE SEQUENCE (WREN)
FIGURE 2-5:
WRITE DISABLE SEQUENCE (WRDI)
SCK
0
2
34567
1
SI
high-impedance
SO
CS
01
0000
0
1
SCK
02
3
4
5
6
7
1
SI
high-impedance
SO
CS
01
0000
0
10



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