W25Q32FWSTIQ View Datasheet(PDF) - Winbond

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W25Q32FWSTIQ

1.8V 32M-BIT SERIAL FLASH MEMORY WITH DUAL/QUAD SPI & QPI

Winbond 

W25Q32FW

Fast Read Quad I/O (EBh) in QPI Mode

The Fast Read Quad I/O instruction is also supported in QPI mode, as shown in Figure 19c. When QPI

mode is enabled, the number of dummy clocks is configured by the “Set Read Parameters (C0h)” instruction

to accommodate a wide range of 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. In QPI mode, the “Continuous Read Mode” bits M7-0 are also considered

as dummy clocks. In the default setting, the data output will follow the Continuous Read Mode bits

immediately.

“Continuous Read Mode” feature is also available in QPI mode for Fast Read Quad I/O instruction. Please

refer to the description on previous pages.

“Wrap Around” feature is not available in QPI mode for Fast Read Quad I/O instruction. To perform a read

operation with fixed data length wrap around in QPI mode, a dedicated “Burst Read with Wrap” (0Ch)

instruction must be used. Please refer to 8.2.45 for details.

/CS

CLK

IO0

Mode 3

Mode 0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Instruction

EBh

A23-16

A15-8

A7-0

M7-0*

IOs switch from

Input to Output

20 16 12 8 4 0 4 0 4 0 4 0 4

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 Byte 3

* "Set Read Parameters" instruction (C0h) can

set the number of dummy clocks.

Figure 24c. Fast Read Quad I/O Instruction (Initial instruction or previous M5-410, QPI Mode)

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