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GD25Q256DFER Datasheet(PDF) 54 Page - GigaDevice Semiconductor (Beijing) Inc.

Part # GD25Q256DFER
Description  3.3V Uniform Sector Dual and Quad Serial Flash
PDF  89 Pages
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Manufacturer  GIGADEVICE [GigaDevice Semiconductor (Beijing) Inc.]
Direct Link  http://www.gigadevice.com/
Logo GIGADEVICE - GigaDevice Semiconductor (Beijing) Inc.

GD25Q256DFER Datasheet(HTML) 54 Page - GigaDevice Semiconductor (Beijing) Inc.

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3.3V Uniform Sector
Dual and Quad Serial Flash
GD25Q256D
54
7.29.
Read Manufacture ID/ Device ID Quad I/O (94H)
The Read Manufacturer/Device ID Quad I/O command is an alternative to the Release from Power-Down / Device ID
command that provides both the JEDEC assigned Manufacturer ID and the specific Device ID by quad I/O.
The command is initiated by driving the CS# pin low and shifting the command code
“94H” followed by a 24-bit address
(A23-A0) of 000000H. After which, the Manufacturer ID and the Device ID are shifted out on the falling edge of SCLK with
most significant bit (MSB) first as shown in Figure 63. If the 24-bit address is initially set to 000001H, the Device ID will be
read first.
Figure 63. Read Manufacture ID/ Device ID Quad I/O Sequence Diagram
Command
0
1
2
3
4
5
6
7
94H
CS#
SCLK
SI(IO0)
SO(IO1)
8
9 10 11 12 13 14 15
4
0
4
0
4
0
4
0
16 17 18 19 20 21 22 23
4
0
4
0
5
1
5
1
5
1
5
1
5
1
5
1
A23-16 A15-8 A7-0
M7-0
6
2
6
2
6
2
6
2
6
2
6
2
7
3
7
3
7
3
7
3
7
3
7
3
WP#(IO2)
HOLD#(IO3)
Dummy
MFR ID
DID
CS#
SCLK
SI(IO0)
SO(IO1)
WP#(IO2)
HOLD#(IO3)
24 25 26 27 28 29 30 31
4
0
4
0
5
1
5
1
6
2
6
2
7
3
7
3
MFR ID
(Repeat)
DID
(Repeat)
4
0
4
0
5
1
5
1
6
2
6
2
7
3
7
3
MFR ID
(Repeat)
DID
(Repeat)



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