W25Q256FVBIF-TR Datasheet, PDF (48/108 Pages) Winbond – 3V 256M-BIT SERIAL FLASH MEMORY WITH DUAL/QUAD SPI & QPI

W25Q256FV
8.2.17 Fast Read Quad Output with 4-Byte Address (6Ch)
The Fast Read Quad Output with 4-Byte Address instruction is similar to the Fast Read Quad Output
instruction except that it requires 32-bit address instead of 24-bit address. No matter the device is
operating in 3-Byte Address Mode or 4-byte Address Mode, the Fast Read Quad Output with 4-Byte
Address instruction will always require 32-bit address to access the entire 256Mb memory.
The Fast Read Quad Output with 4-Byte Address (6Ch) instruction is only supported in Standard SPI
mode.
/CS
CLK
IO₀
IO₁
IO₂
IO₃
/CS
CLK
IO₀
IO₁
IO₂
IO₃
Mode 3
Mode 0
0 1 2 3 4 5 6 7 8 9 10
36 37 38 39
Instruction (6Ch)
32-Bit Address
31 30 29
* _{High Impedance}
3210
High Impedance
High Impedance
* ^{= MSB}
39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55
Dummy Clocks
0
High Impedance
High Impedance
High Impedance
IO₀ switches from
Input to Output
404040404
515151515
626262626
737373737
Byte 1 Byte 2 Byte 3 Byte 4
Figure 21. Fast Read Quad Output with 4-Byte Address Instruction (SPI Mode only)
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