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P25Q64U Datasheet(PDF) 47 Page - Puya Semiconductor Co., Ltd.

Part # P25Q64U
Description  Ultra Low Power, 64M-bit Serial Multi I/O Flash Memory Datasheet
PDF  97 Pages
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Manufacturer  PUYA [Puya Semiconductor Co., Ltd.]
Direct Link  http://www.puyasemi.com/index_en.html
Logo PUYA - Puya Semiconductor Co., Ltd.

P25Q64U Datasheet(HTML) 47 Page - Puya Semiconductor Co., Ltd.

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P25Q64U Datasheet
Puya Semiconductor
Page 47 of 97
10.20 4 X IO Read in QPI mode
The 4 X I/O Fast Read command is also supported in QPI mode. In QPI mode, the number of dummy clocks is
configured by the “Set Read Parameters (C0H)” command to accommodate a wide range application 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 4/6/8. In QPI
mode, the “Continuous Read Mode” bits M7-M0 are also considered as dummy clocks. “Continuous Read
Mode” feature is also available in QPI mode for 4 X I/O Fast Read command. “Wrap Around” feature is not
available in QPI mode for 4 X I/O Fast Read command. To perform a read operation with fixed data length wrap
around in QPI mode, a dedicated “Burst Read with Wrap” (0CH) command must be used.
Figure 10-20 4 x I/O Read in QPI Mode Sequence ( M5-4
≠ (1,0) )
CS#
SCLK
SI(IO0)
SO(IO1)
WP#(IO2)
HOLD#(IO3)
Command
EBH
A23-16
A15-8
A7-0
M7-0*
IO switch from
input to output
Byte1
Byte2
*“Set Read Parameters” command (C0H)
can set the number of dummy clocks
20
16
12
8
4
0
4
0
4
0
4
0
4
21
17
13
9
5
1
5
1
5
1
5
1
5
22
18
14
10
6
2
6
2
6
2
6
2
6
23
19
15
11
7
3
7
3
7
3
7
3
7
0
1
2
3
4
5
6
7
8
9
10
11
12 13



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