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GD25LB64CSIS データシート(PDF) 54 Page - GigaDevice Semiconductor (Beijing) Inc.

部品番号 GD25LB64CSIS
部品情報  1.8V Uniform Sector Dual and Quad Serial Flash
PDF  70 Pages
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メーカー  GIGADEVICE [GigaDevice Semiconductor (Beijing) Inc.]
ホームページ  http://www.gigadevice.com/
Logo GIGADEVICE - GigaDevice Semiconductor (Beijing) Inc.

GD25LB64CSIS データシート(HTML) 54 Page - GigaDevice Semiconductor (Beijing) Inc.

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1.8V Uniform Sector
Dual and Quad Serial Flash
GD25LB64C
54
7.37 Read Serial Flash Discoverable Parameter (5AH)
The Serial Flash Discoverable Parameter (SFDP) standard provides a consistent method of describing the
functional and feature capabilities of serial flash devices in a standard set of internal parameter tables. These parameter
tables can be interrogated by host system software to enable adjustments needed to accommodate divergent features
from multiple vendors. The concept is similar to the one found in the Introduction of JEDEC Standard, JESD68 on CFI.
SFDP is a standard of JEDEC Standard No.216.
Figure39. Read Serial Flash Discoverable Parameter command Sequence Diagram
Command
0
1
2
3
4
5
6
7
5AH
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
Figure39a. Read Serial Flash Discoverable Parameter command Sequence Diagram (QPI)
CS#
SCLK
IO0
IO1
IO2
IO3
0
1
2
3
4
5
Command
5AH
20
12
16
8
6
7
8
9
10
4
4
0
0
4
0
4
0
4
21
13
17
9
5
5
1
1
5
1
5
1
5
22
14
18
10
6
6
2
2
6
2
6
2
6
23
15
19
11
7
7
3
3
7
3
7
3
7
A23-16 A15-8
A7-0
Dummy*
11
12 13
IOs switch from
Input to output
Byte1
Byte2



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