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W25Q128FVEIG Datasheet(HTML) 36 Page - Winbond

Part No. W25Q128FVEIG
Description  SERIAL FLASH MEMORY WITH DUAL/QUAD SPI & QPI
Download  97 Pages
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Maker  WINBOND [Winbond]
Homepage  http://www.winbond.com
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W25Q128FVEIG Datasheet(HTML) 36 Page - Winbond

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W25Q128FV
- 35 -
Fast Read (0Bh) in QPI Mode
The Fast Read instruction is also supported in QPI mode. When QPI mode is enabled, the number of
dummy clocks is configured by the “Set Read Parameters (C0h)” instruction to accommodate a wide
range of applications with different needs for either maximum Fast Read frequency or minimum data
access latency. Depending on the Read Parameter Bits P[5:4] setting, the number of dummy clocks can
be configured as either 2, 4, 6 or 8. The default number of dummy clocks upon power up or after a Reset
instruction is 2.
/CS
CLK
Mode 0
Mode 3
0
1
IO
0
IO
1
IO
2
IO
3
0Bh
2
3
4
5
20
16
12
8
21
17
22
18
23
19
13
9
14
10
15
11
A23-16
6
7
8
9
4
0
5
1
6
2
7
3
A15-8
A7-0
Dummy
*
Byte 1
Byte 2
4
0
5
1
6
2
7
3
4
0
5
1
6
2
7
3
4
0
5
1
6
2
7
3
10
11
12
13
4
5
6
7
IOs switch from
Input to Output
* "Set Read Parameters" instruction (C0h) can set
the number of dummy clocks.
Instruction
Figure 16b. Fast Read Instruction (QPI Mode)


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