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GD25Q64CFJS Datasheet(PDF) 40 Page - GigaDevice Semiconductor (Beijing) Inc.

Part # GD25Q64CFJS
Description  3.3V Uniform Sector Dual and Quad Serial Flash
PDF  74 Pages
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Manufacturer  GIGADEVICE [GigaDevice Semiconductor (Beijing) Inc.]
Direct Link  http://www.gigadevice.com/
Logo GIGADEVICE - GigaDevice Semiconductor (Beijing) Inc.

GD25Q64CFJS Datasheet(HTML) 40 Page - GigaDevice Semiconductor (Beijing) Inc.

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3.3V Uniform Sector
Dual and Quad Serial Flash
GD25Q64C
40
7.28. Read Unique ID (4BH)
The Read Unique ID command accesses a factory-set read-only 128bit number that is unique to each device. The Unique
ID can be used in conjunction with user software methods to help prevent copying or cloning of a system.
The Read Unique ID command sequence: CS# goes low  sending Read Unique ID command  3-Byte Address
(000000H) Dummy Byte128bit Unique ID Out CS# goes high.
Figure 33. Read Unique ID Sequence Diagram (ADS=0)
Command
0
1
2
3
4
5
6
7
4BH
CS#
SCLK
SI
SO
High-Z
8
9 10
28 29 30 31
3
2
1
0
23 22 21
24-bit address
MSB
34 35 36 37
33
6
5
4
3
2
1
0
38 39
Data Out1
32
42 43 44 45
41
46 47
40
7
6
5
4
3
2
1
0
7
6
5
7
Data Out2
CS#
SCLK
SI
SO
MSB
Dummy Byte



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