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W25Q64FVSFIQ View Datasheet(PDF) - Winbond

Part NameW25Q64FVSFIQ Winbond
Winbond Winbond
Description3V 64M-BIT SERIAL FLASH MEMORY WITH DUAL/QUAD SPI & QPI
W25Q64FVSFIQ Datasheet PDF : 89 Pages
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W25Q64FV
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 15c. 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. 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 7.2.39 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 15c. Fast Read Quad I/O Instruction (Initial instruction or previous M5-410, QPI Mode)
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GENERAL DESCRIPTION
The W25Q64FV (64M-bit) Serial Flash memory provides a storage solution for systems with limited space, pins and power. The 25Q series offers flexibility and performance well beyond ordinary Serial Flash devices. They are ideal for code shadowing to RAM, executing code directly from Dual/Quad SPI (XIP) and storing voice, text and data. The device operates on a single 2.7V to 3.6V power supply with current consumption as low as 4mA active and 1µA for power-down. All devices are offered in space saving packages.

 

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