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25Q64FVAIF View Datasheet(PDF) - Winbond

Part NameDescriptionManufacturer
25Q64FVAIF 3V 64M-BIT SERIAL FLASH MEMORY WITH DUAL/QUAD SPI & QPI Winbond
Winbond Winbond
25Q64FVAIF Datasheet PDF : 89 Pages
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W25Q64FV
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 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
IO0
Mode 3
Mode 0
0 1 2 3 4 5 6 7 8 9 10 11 12 13
Instruction
0Bh
A23-16
20 16
A15-8
12 8
A7-0 Dummy*
40404
IOs switch from
Input to Output
0404
IO1
21 17 13 9 5 1 5 1 5 1 5 1 5
IO2
22 18 14 10 6 2 6 2 6 2 6 2 6
IO3
23 19 15 11 7 3 7 3 7 3 7 3 7
Byte 1 Byte 2
* "Set Read Parameters" instruction (C0h) can set
the number of dummy clocks.
Figure 11b. Fast Read Instruction (QPI Mode)
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Publication Release Date: October 07, 2013
Revision L
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