25C080TIP View Datasheet(PDF) - Microchip Technology
Part Name
Description
MFG CO.
'25C080TIP' PDF : 22 Pages View PDF
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.
FIGURE 3-4:
WRITE ENABLE SEQUENCE
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
CS
SCK
01234567
SI
00000110
High-impedance
SO
FIGURE 3-5:
WRITE DISABLE SEQUENCE
CS
SCK
01234567
SI
0 0 0 0 0 1 10 0
High-impedance
SO
1997-2012 Microchip Technology Inc.
DS21230E-page 9
Share Link: 
