W25Q64FVSSIG datasheet(59/89 Pages) WINBOND

Part #	W25Q64FVSSIG

Description	3V 64M-BIT SERIAL FLASH MEMORY WITH DUAL/QUAD SPI & QPI

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Manufacturer	WINBOND [Winbond]

Direct Link	http://www.winbond.com

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W25Q64FV

Publication Release Date:

October 07, 2013

- 59 -

Revision L

6.2.32

Read Manufacturer / Device ID Quad I/O (94h)

The Read Manufacturer / Device ID Quad I/O instruction is an alternative to the Read Manufacturer /

Device ID instruction that provides both the JEDEC assigned manufacturer ID and the specific device ID

at 4x speed.

The Read Manufacturer / Device ID Quad I/O instruction is similar to the Fast Read Quad I/O instruction.

The instruction is initiated by driving the /CS pin low and shifting the

instruction code “94h” followed by a

four clock dummy cycles and then a 24-bit address (A23-A0) of 000000h, but with the capability to input

the Address bits four bits per clock. After which, the Manufacturer ID for Winbond (EFh) and the Device

ID are shifted out four bits per clock on the falling edge of CLK with most significant bit (MSB) first as

shown in Figure 31. The Device ID values for the W25Q64FV is listed in Manufacturer and Device

Identification table. The Manufacturer and Device IDs can be read continuously, alternating from one to

the other. The instruction is completed by driving /CS high.

Mode 0

Mode 3

0

1

2

3

4

5

6

7

Instruction (94h)

High Impedance

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

5

1

4

0

23

Mode 0

Mode 3

IOs switch from

Input to Output

High Impedance

7

3

6

2

/CS

CLK

IO

0

IO

1

IO

2

IO

3

High Impedance

A23-16

A15-8

A7-0

(00h)

M7-0

MFR ID

Device ID

Dummy

/CS

CLK

IO

0

IO

1

IO

2

IO

3

23

0

1

2

3

5

1

4

0

7

3

6

2

5

1

4

0

7

3

6

2

5

1

4

0

7

3

6

2

5

1

4

0

7

3

6

2

5

1

4

0

7

3

6

2

5

1

4

0

7

3

6

2

5

1

4

0

7

3

6

2

5

1

4

0

7

3

6

2

5

1

4

0

7

3

6

2

24

25

26

27

28

29

30

MFR ID

(repeat)

Device ID

(repeat)

MFR ID

(repeat)

Device ID

(repeat)

Figure 31. Read Manufacturer / Device ID Quad I/O Instruction (SPI Mode only)

Note:

The “Continuous Read Mode” bits M(7-0) must be set to Fxh to be compatible with Fast Read Quad I/O instruction.

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