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GD25Q21B Datasheet, PDF (8/49 Pages) ELM Electronics – 2M-bit Serial Flash | |||
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GD25Q21BxIGx Uniform Sector Dual and Quad Serial Flash
Table1.0 GD25Q21B Protected area size (CMP=0)
http://www.elm-tech.com
Status Register Content
Memory Content
BP4 BP3 BP2 BP1 BP0
0ÃÃ00
00Ã01
00Ã10
01Ã01
01Ã10
0ÃÃ11
1Ã000
10001
10010
10011
1010Ã
10110
11001
11010
11011
1110Ã
11110
1Ã111
Blocks
NONE
3
2 and 3
0
0 and 1
0 to 3
NONE
3
3
3
3
3
0
0
0
0
0
0 to 3
Addresses
NONE
030000H-03FFFFH
020000H-03FFFFH
000000H-00FFFFH
000000H-01FFFFH
000000H-03FFFFH
NONE
03F000H-03FFFFH
03E000H-03FFFFH
03C000H-03FFFFH
038000H-03FFFFH
038000H-03FFFFH
000000H-000FFFH
000000H-001FFFH
000000H-003FFFH
000000H-007FFFH
000000H-007FFFH
000000H-03FFFFH
Density
NONE
64KB
128KB
64KB
128KB
256KB
NONE
4KB
8KB
16KB
32KB
32KB
4KB
8KB
16KB
32KB
32KB
256KB
Portion
NONE
Upper 1/4
Upper 1/2
Lower 1/4
Lower 1/2
ALL
NONE
Upper 1/64
Upper 1/32
Upper 1/16
Upper 1/8
Upper 1/8
Lower 1/64
Lower 1/32
Lower 1/16
Lower 1/8
Lower 1/8
ALL
Table1.0. GD25Q21B Protected area size (CMP=1)
Status Register Content
Memory Content
BP4 BP3 BP2 BP1 BP0
0ÃÃ00
00Ã01
00Ã10
01Ã01
01Ã10
0ÃÃ11
1Ã000
10001
10010
10011
1010Ã
10110
11001
11010
11011
1110Ã
11110
1Ã111
Blocks
0 to 3
0 to 2
0 and 1
1 to 3
2 and 3
NONE
0 to 3
0 to 3
0 to 3
0 to 3
0 to 3
0 to 3
0 to 3
0 to 3
0 to 3
0 to 3
0 to 3
NONE
Addresses
000000H-03FFFFH
000000H-02FFFFH
000000H-01FFFFH
010000H-03FFFFH
020000H-03FFFFH
NONE
000000H-03FFFFH
000000H-03EFFFH
000000H-03DFFFH
000000H-03BFFFH
000000H-037FFFH
000000H-037FFFH
001000H-03FFFFH
002000H-03FFFFH
004000H-03FFFFH
008000H-03FFFFH
008000H-03FFFFH
NONE
Density
256KB
192KB
128KB
192KB
128KB
NONE
256KB
252KB
248KB
240KB
224KB
224KB
252KB
248KB
240KB
224KB
224KB
NONE
Portion
ALL
Lower 3/4
Lower 1/2
Upper 3/4
Upper 1/2
NONE
ALL
Lower 63/64
Lower 31/32
Lower 15/16
Lower 7/8
Lower 7/8
Upper 63/64
Upper 31/32
Upper 15/16
Upper 7/8
Upper 7/8
NONE
49 - 8
Rev.1.1
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