GD25Q21 Datasheet, PDF (8/49 Pages) ELM Electronics – Uniform Sector Dual and Quad Serial Flash

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
0××00
00×01
00×10
01×01
01×10
0××11
1×000
10001
10010
10011
1010×
10110
11001
11010
11011
1110×
11110
1×111
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
0××00
00×01
00×10
01×01
01×10
0××11
1×000
10001
10010
10011
1010×
10110
11001
11010
11011
1110×
11110
1×111
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
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Rev.1.1