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GD25B257DFIR Datasheet(PDF) 39 Page - GigaDevice Semiconductor (Beijing) Inc.

Part # GD25B257DFIR
Description  3.3V Uniform Sector Dual and Quad Serial Flash
PDF  92 Pages
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Manufacturer  GIGADEVICE [GigaDevice Semiconductor (Beijing) Inc.]
Direct Link  http://www.gigadevice.com/
Logo GIGADEVICE - GigaDevice Semiconductor (Beijing) Inc.

GD25B257DFIR Datasheet(HTML) 39 Page - GigaDevice Semiconductor (Beijing) Inc.

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3.3V Uniform Sector
Dual and Quad Serial Flash
GD25B257D
39
Figure 30. Quad I/O Fast Read Sequence Diagram (M5-
4≠ (1, 0), ADS=1)
Figure 31.Quad I/O Fast Read Sequence Diagram (M5-4= (1, 0), ADS=1)
Figure 32. Quad I/O Fast Read with 4-Byte Address Sequence Diagram (M5-
4≠ (1, 0), ADS=0 or ADS=1)
Command
0
1
2
3
4
5
6
7
EBH
CS#
SCLK
IO0
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
A23-16A15-8 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
4
5
6
7
Dummy
Byte1 Byte2
4
0
5
1
6
2
7
3
A31-24
24 25
IO1
IO2
IO3
0
1
2
3
4
5
6
7
CS#
SCLK
8
9 10 11 12 13 14 15
IO0
4
0
4
0
5
1
5
1
6
2
6
2
7
3
7
3
4
0
4
0
5
1
5
1
6
2
6
2
7
3
7
3
4
0
4
0
5
1
5
1
6
2
6
2
7
3
7
3
4
5
6
7
A23-16 A15-8 A7-0
M7-0
Dummy
Byte1 Byte2
16 17
4
0
5
1
6
2
7
3
A31-24
IO1
IO2
IO3
Command
0
1
2
3
4
5
6
7
ECH
CS#
SCLK
IO0
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
A23-16A15-8 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
4
5
6
7
Dummy
Byte1 Byte2
4
0
5
1
6
2
7
3
A31-24
24 25
IO1
IO2
IO3



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