W25Q128FVSIF-TR Datasheet, PDF (26/100 Pages) Winbond – 3V 128M-BIT SERIAL FLASH MEMORY WITH DUAL/QUAD SPI & QPI

W25Q128FV
8. INSTRUCTIONS
The Standard/Dual/Quad SPI instruction set of the W25Q128FV consists of 45 basic instructions that
are fully controlled through the SPI bus (see Instruction Set Table1-2). Instructions are initiated with the
falling edge of Chip Select (/CS). The first byte of data clocked into the DI input provides the instruction
code. Data on the DI input is sampled on the rising edge of clock with most significant bit (MSB) first.
The QPI instruction set of the W25Q128FV consists of 32 basic instructions that are fully controlled
through the SPI bus (see Instruction Set Table 3). Instructions are initiated with the falling edge of Chip
Select (/CS). The first byte of data clocked through IO[3:0] pins provides the instruction code. Data on
all four IO pins are sampled on the rising edge of clock with most significant bit (MSB) first. All QPI
instructions, addresses, data and dummy bytes are using all four IO pins to transfer every byte of data
with every two serial clocks (CLK).
Instructions vary in length from a single byte to several bytes and may be followed by address bytes,
data bytes, dummy bytes (don‟t care), and in some cases, a combination. Instructions are completed
with the rising edge of edge /CS. Clock relative timing diagrams for each instruction are included in
Figures 5 through 57. All read instructions can be completed after any clocked bit. However, all
instructions that Write, Program or Erase must complete on a byte boundary (/CS driven high after a
full 8-bits have been clocked) otherwise the instruction will be ignored. This feature further protects the
device from inadvertent writes. Additionally, while the memory is being programmed or erased, or when
the Status Register is being written, all instructions except for Read Status Register will be ignored until
the program or erase cycle has completed.
8.1 Device ID and Instruction Set Tables
8.1.1 Manufacturer and Device Identification
MANUFACTURER ID
Winbond Serial Flash
(MF7 - MF0)
EFh
Device ID
Instruction
W25Q128FV (SPI Mode)
W25Q128FV (QPI Mode)
(ID7 - ID0)
ABh, 90h, 92h, 94h
17h
17h
(ID15 - ID0)
9Fh
4018h
6018h
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