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IS25LP064A-RBLE1 Datasheet(PDF) 51 Page - Integrated Silicon Solution, Inc

Part # IS25LP064A-RBLE1
Description  3V SERIAL FLASH MEMORY WITH 133MHZ MULTI I/O SPI & QUAD I/O QPI DTR INTERFACE
PDF  99 Pages
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Manufacturer  ISSI [Integrated Silicon Solution, Inc]
Direct Link  http://www.issi.com
Logo ISSI - Integrated Silicon Solution, Inc

IS25LP064A-RBLE1 Datasheet(HTML) 51 Page - Integrated Silicon Solution, Inc

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IS25LP064A/032A
Integrated Silicon Solution, Inc.- www.issi.com
51
Rev. A
11/06/2015
8.19 WRITE FUNCTION REGISTER OPERATION (WRFR, 42h)
The Write Function Register (WRFR) instruction allows the user to change from top block area (default) to
bottom block area by setting TBS bit
to “1”.
Also Information Row Lock bits (IRL3~IRL0
) can be set to “1” individually by WRFR instruction in order to lock
Information Row. Since TBS bit and IRL bits are OTP, once it is set to “1”, it cannot be set back to “0” again.
Figure 8.32 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 8.33 Write Function Register QPI Sequence
42h
0
1
Mode 3
Mode 0
2
3
7:4
3:0
CE#
SCK
IO[3:0]
Data In



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