GD25LQ40xIGx 1.8V Uniform Sector Dual and Quad Serial Flash
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7.23. Read Manufacture ID/Device ID Dual I/O (92H)
The Read Manufacturer/Device ID Dual 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
dual I/O.
The command is initiated by driving the CS# pin low and shifting the command code “92H” 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 Figure25. If the 24-bit address is
initially set to 000001H, the Device ID will be read first.
Figure 25. Read Manufacture ID/Device ID Dual I/O Sequence Diagram
CS#
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
SCLK
Command
92H
SI(IO0)
6
4
5
2
3
0
1
6
7
4
5
2
3
0
1
6
7
4
5
2
3
0
1
6
7
4
5
2
3
0
1
SO(IO1)
7
A23-16
A15-8
A7-0
M7-0
CS#
23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
SCLK
SI(IO0)
6
7
4
5
2
3
0
1
6
7
4
5
2
3
0
1
6
7
4
5
2
3
0
1
6
7
4
5
2
3
0
1
6
7
4
5
2
3
0
1
6
7
4
5
2
3
0
1
SO(IO1)
MFR ID
(Repeat)
MFR ID
Device ID
Device ID
(Repeat)
MFR ID
(Repeat)
Device ID
(Repeat)
Rev.1.0
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