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W25Q16DVDAIG-TR Datasheet(PDF) 54 Page - Winbond

Part # W25Q16DVDAIG-TR
Description  3V 16M-BIT SERIAL FLASH MEMORY WITH DUAL AND QUAD SPI
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Manufacturer  WINBOND [Winbond]
Direct Link  http://www.winbond.com
Logo WINBOND - Winbond

W25Q16DVDAIG-TR Datasheet(HTML) 54 Page - Winbond

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7.2.33 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
24-bit address (A23-A0) of 000000h, 8-bit Continuous Read Mode Bits and then four clock dummy
cycles, 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 W25Q16DV 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
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 Diagram
Note:
The “Continuous Read Mode” bits M7-0 must be set to Fxh to be compatible with Fast Read Quad I/O instruction.


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