3.3V Uniform Sector
Dual and Quad Serial Flash
GD25Q80C
Table3. Signature and Parameter Identification Data Values
Description
Comment
Add(H)
(Byte)
DW Add
(Bit)
Data
Data
SFDP Signature
Fixed:50444653H
00H
01H
02H
03H
04H
05H
06H
07H
07:00
15:08
23:16
31:24
07:00
15:08
23:16
31:24
53H
46H
44H
50H
00H
01H
01H
FFH
53H
46H
44H
50H
00H
01H
01H
FFH
SFDP Minor Revision Number
SFDP Major Revision Number
Start from 00H
Start from 01H
Number of Parameters Headers Start from 00H
Unused
Contains 0xFFH and can never
be changed
ID number (JEDEC)
00H: It indicates a JEDEC
specified header
08H
09H
0AH
0BH
07:00
15:08
23:16
31:24
00H
00H
01H
09H
00H
00H
01H
09H
Parameter Table Minor Revision Start from 0x00H
Number
Parameter Table Major Revision Start from 0x01H
Number
Parameter Table Length
(in double word)
How many DWORDs in the
Parameter table
Parameter Table Pointer (PTP)
First address of JEDEC Flash
Parameter table
0CH
0DH
0EH
0FH
07:00
15:08
23:16
31:24
30H
00H
00H
FFH
30H
00H
00H
FFH
Unused
Contains 0xFFH and can never
be changed
ID Number
It is indicates GigaDevice
manufacturer ID
10H
11H
12H
13H
07:00
15:08
23:16
31:24
C8H
00H
01H
03H
C8H
00H
01H
03H
(GigaDevice Manufacturer ID)
Parameter Table Minor Revision Start from 0x00H
Number
Parameter Table Major Revision Start from 0x01H
Number
Parameter Table Length
(in double word)
How many DWORDs in the
Parameter table
Parameter Table Pointer (PTP)
First address of GigaDevice Flash
Parameter table
14H
15H
16H
17H
07:00
15:08
23:16
31:24
60H
00H
00H
FFH
60H
00H
00H
FFH
Unused
Contains 0xFFH and can never
be changed
37
GILWAY [ GILWAY TECHNICAL LAMP ]
