W25Q16DW
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
Mode 3
0
1
2
3
4
5
6
7
8
9
10
11
12
13
CLK
Mode 0
In structio n
0Bh
A23-16
A15-8
A7-0
Dummy *
IOs switch from
Input to Output
IO 0
IO 1
IO 2
IO 3
20
21
22
23
16
17
18
19
12
13
14
15
8
9
10
11
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Byte 1
* "Set Read Parameters" instruction (C0h) can set
the number of dummy clocks.
Figure 11b. Fast Read Instruction (QPI Mode)
- 30 -
Byte 2
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