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25LC080CT-H/SN Datasheet(PDF) 11 Page - Microchip Technology

No. de pieza 25LC080CT-H/SN
Descripción Electrónicos  8K-256K SPI Serial EEPROM High Temp Family Data Sheet
PDF  24 Pages
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Fabricante Electrónico  MICROCHIP [Microchip Technology]
Página de inicio  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

25LC080CT-H/SN Datasheet(HTML) 11 Page - Microchip Technology

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© 2009 Microchip Technology Inc.
Preliminary
DS22131C-page 11
25LCXXX
3.4
Write Enable (WREN) and Write
Disable (WRDI)
The 25LCXXX contains a write enable latch.
See
Table 5-1 for the write-protect functionality matrix. This
latch must be set before any write operation will be com-
pleted 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 (WREN)
FIGURE 3-5:
WRITE DISABLE SEQUENCE (WRDI)
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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