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AT25SL321 Datasheet(PDF) 28 Page - Renesas Technology Corp

Part # AT25SL321
Description  32-Mbit, 1.7 V Minimum SPI Serial Flash Memory with Dual I/O, Quad I/O, and QPI Support
PDF  82 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

AT25SL321 Datasheet(HTML) 28 Page - Renesas Technology Corp

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DS-AT25SL321-112 Rev. J
Page 28
Nov 1, 2022
© 2022 Renesas Electronics
AT25SL321 Datasheet
8.10 Fast Read in QPI Mode
When QPI mode is enabled, the number of dummy clock is configured by the Set Read Parameters (C0h)
command to accommodate wide range applications with different needs for either maximum Fast Read frequency
or minimum data access latency. Depending on the state of the Read Parameter bits P[4] and P[5], the number of
dummy clocks can be configured as either 4, or 6 or 8. The default number of dummy clocks upon power up or
after a Reset command is 4. See Figure 15 and Figure 16.
Figure 15. Fast Read command (QPI Mode, 80 MHz)
Figure 16. Fast Read command (QPI Mode, 104 MHz)
CS
SCK
IO
IO
IO
IO
1
04
3
26
5
8
9
1011
1213
14
7
Dummy Clocks*
* = “Set Read Parameters” command (C0h) can set the number of dummy clocks
Data Out 1 Data Out 2 Data Out 3
A23-16
A15-8
A7-0
Mode 3
Mode 0
Command
0Bh
20
16
21
17
22
18
23
19
12
8
13
9
14
10
15
11
40
51
62
73
40
51
62
7
4
5
6
7
3
40
51
62
73
MSB
MSB
MSB
MSB
CS
SCK
IO
0
IO
1
1
04
3
26
5
8
9
1011
1213
14
7
Dummy Clocks*
* = “Set Read Parameters” command (C0h) can set the number of dummy clocks
Data Out 1 Data Out 2 Data Out 3
A23-16
A15-8
A7-0
Mode 3
Mode 0
Command
0Bh
20
16
21
17
22
18
23
19
12
8
13
9
14
10
15
11
40
51
62
73
40
51
62
7
4
5
6
7
3
40
51
62
73
MSB
MSB
MSB
MSB
IO
2
IO
3



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