FOR MOBILE APPLICATIONS
W25Q256FV
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8.2.13
Fast Read with 4-Byte Address (0Ch)
The Fast Read with 4-Byte Address instruction is similar to the Fast Read 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 Read Data with 4-Byte Address instruction will always require 32-bit
address to access the entire 256Mb memory.
The Fast Read with 4-Byte Address (0Ch) instruction is only supported in Standard SPI mode. In QPI
mode, the instruction code 0Ch is used for the “Burst Read with Wrap” instruction.
Figure 17. Fast Read with 4-Byte Address Instruction (SPI Mode only)