W25Q64DWSFIG WINBOND [Winbond], W25Q64DWSFIG Datasheet - Page 29
W25Q64DWSFIG
Manufacturer Part Number
W25Q64DWSFIG
Description
1.8V 64M-BIT SERIAL FLASH MEMORY WITH DUAL/QUAD SPI & QPI
Manufacturer
WINBOND [Winbond]
Datasheet
1.W25Q64DWSFIG.pdf
(82 pages)
- Current page: 29 of 82
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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.
CLK
/CS
IO
IO
IO
IO
0
1
2
3
Mode 3
Mode 0
Instruction
*
the number of dummy clocks.
"Set Read Parameters" instruction (C0h) can set
0
0Bh
1
Figure 11b. Fast Read Instruction (QPI Mode)
20
21
22
23
A23-16
2
16
17
18
19
3
12
13
14
15
A15-8
4
10
11
8
9
5
- 29 -
4
5
6
7
A7-0
6
0
1
2
3
7
Dummy
4
5
6
7
8
0
1
2
3
*
Publication Release Date: January 13, 2011
9
4
5
6
7
Byte 1
10
0
1
2
3
11
IOs switch from
Input to Output
4
5
6
7
Byte 2
12
0
1
2
3
13
Preliminary - Revision C
W25Q64DW
4
5
6
7
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