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GD25S512MDFEG Datasheet(PDF) 35 Page - GigaDevice Semiconductor (Beijing) Inc.

Part # GD25S512MDFEG
Description  3.3V Uniform Sector Dual and Quad Serial Flash
PDF  87 Pages
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Manufacturer  GIGADEVICE [GigaDevice Semiconductor (Beijing) Inc.]
Direct Link  http://www.gigadevice.com/
Logo GIGADEVICE - GigaDevice Semiconductor (Beijing) Inc.

GD25S512MDFEG Datasheet(HTML) 35 Page - GigaDevice Semiconductor (Beijing) Inc.

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3.3V Uniform Sector
Dual and Quad Serial Flash
GD25S512MD
35
7.14. Dual I/O Fast Read (DIOFR BBH or 4DIOFR BCH)
The Dual I/O Fast Read command is similar to the Dual Output Fast Read command but with the capability to input
the 3-Byte address (A23-
0) and a “Read Mode” Byte 2-bit per clock by SI and SO, and each bit being latched in on the
rising edge of SCLK, then the memory contents are shifted out 2-bit per clock cycle from SI and SO. The command sequence
is shown below. The first Byte addressed can be at any location. The address is automatically incremented to the next
higher address after each Byte of data is shifted out.
Figure 25 Dual I/O Fast Read Sequence Diagram (ADS=0)
Figure 26 Dual I/O Fast Read Sequence Diagram (ADS=1)
Command
0
1
2
3
4
5
6
7
BBH
CS#
SCLK
SI(IO0)
SO(IO1)
8
9 10 11 12 13 14 15
6
4
2
0
6
4
2
0
16 17 18 19 20 21 22 23
6
4
2
0
6
4
7
5
3
1
7
5
3
1
7
5
3
1
7
5
A23-16
A15-8
A7-0
M7-4
CS#
23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39
SI(IO0)
SO(IO1)
6
4
2
0
6
4
2
0
6
4
2
0
6
4
2
0
7
5
3
1
7
5
3
1
7
5
3
1
7
5
3
1
SCLK
6
7
Byte1
Byte2
Byte3
Byte4
2
0
3
1
M3-0
Command
0
1
2
3
4
5
6
7
BBH
CS#
SCLK
SI(IO0)
SO(IO1)
8
9 10 11 12 13 14 15
6
4
2
0
6
4
2
0
16 17 18 19 20 21 22 23
6
4
2
0
7
5
3
1
7
5
3
1
7
5
3
1
A31-24
A15-8
A7-0
CS#
24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39
SI(IO0)
SO(IO1)
6
4
2
0
6
4
2
0
6
4
2
0
6
4
2
0
7
5
3
1
7
5
3
1
7
5
3
1
7
5
3
1
SCLK
6
7
Byte1
Byte2
Byte3
Byte4
6
4
7
5
M7-4
24 25 26 27
6
4
2
0
7
5
3
1
A23-16
2
0
3
1
M3-0



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