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W25Q128FVEIG Datasheet(HTML) 24 Page - Winbond

Part No. W25Q128FVEIG
Description  SERIAL FLASH MEMORY WITH DUAL/QUAD SPI & QPI
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Maker  WINBOND [Winbond]
Homepage  http://www.winbond.com
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W25Q128FVEIG Datasheet(HTML) 24 Page - Winbond

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W25Q128FV
- 23 -
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
(MF7 - MF0)
Winbond Serial Flash
EFh
Device ID
(ID7 - ID0)
(ID15 - ID0)
Instruction
ABh, 90h, 92h, 94h
9Fh
W25Q128FV (SPI Mode)
17h
4018h
W25Q128FV (QPI Mode)
17h
6018h


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