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IS25LP032 Datasheet(PDF) 46 Page - Integrated Silicon Solution, Inc

Part # IS25LP032
Description  3V SERIAL FLASH MEMORY WITH 133MHZ MULTI I/O SPI
PDF  90 Pages
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Manufacturer  ISSI [Integrated Silicon Solution, Inc]
Direct Link  http://www.issi.com
Logo ISSI - Integrated Silicon Solution, Inc

IS25LP032 Datasheet(HTML) 46 Page - Integrated Silicon Solution, Inc

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IS25LP032/064/128
Integrated Silicon Solution, Inc.- www.issi.com
46
Rev. D
10/03/2014
8.18 WRITE FUNCTION REGISTER OPERATION (WRFR, 42h)
The Write Function Register (WRFR) instruction allows the user to select top or bottom block area by writing into
TBS bit and lock or unlock the information row by
writing “0”s (IR lock) or “1”s (IR unlock) into IRL3, IRL2, IRL1,
IRL0.
Figure 8.30 Write Function Register Sequence
Instruction = 42h
CE #
SCK
SI
SO
Data In
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Mode 3
Mode 0
7
3
2
1
0
6
5
4
High Impedence
Figure 8.31 WRFR COMMAND (WRITE Function REGISTER) OPERATION (QPI)
42h
0
1
Mode 3
Mode 0
2
3
7:4
3:0
CE#
SCK
IO[3:0]
Data In



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