GD25Q32CxIGx 3.3V Uniform Sector Dual and Quad Serial Flash
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5. DATA PROTECTION
The GD25Q32C provides the following data protection methods:
Write Enable (WREN) command: The WREN command is set the Write Enable Latch bit (WEL). The WEL
bit will return to reset by the following situation:
♦
- Power-Up
- Write Disable (WRDI)
- Write Status Register (WRSR)
- Page Program (PP)
- Sector Erase (SE) / Block Erase (BE) / Chip Erase (CE)
Software Protection Mode: The Block Protect (BP4, BP3, BP2, BP1 and BP0) bits define the section of the
memory array that can be read but not change.
♦
Hardware Protection Mode: WP# going low to protected the BP0~BP4 bits and SRP0~1 bits.
Deep Power-Down Mode: In Deep Power-Down Mode, all commands are ignored except the Release from
Deep Power-Down Mode command.
♦
♦
Table1.0 GD25Q32C Protected area size (CMP=0)
Status Register Content
BP4 BP3 BP2 BP1 BP0
Memory Content
Addresses
Blocks
NONE
63
62 to 63
60 to 63
56 to 63
48 to 63
32 to 63
0
0 to 1
0 to 3
0 to 7
0 to 15
0 to 31
0 to 63
63
Density
NONE
64KB
128KB
256KB
512KB
1MB
Portion
NONE
×
0
0
0
0
0
0
0
0
0
0
0
0
×
1
1
1
1
1
1
1
1
1
1
×
0
0
0
0
0
0
1
1
1
1
1
1
×
0
0
0
0
0
1
1
1
1
1
0
0
0
0
1
1
1
0
0
0
1
1
1
1
0
0
0
1
1
0
0
0
1
1
0
0
1
1
0
0
1
0
1
1
0
0
1
1
0
1
1
0
1
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
0
1
×
0
1
0
1
×
0
NONE
3F0000H-3FFFFFH
3E0000H-3FFFFFH
3C0000H-3FFFFFH
380000H-3FFFFFH
300000H-3FFFFFH
200000H-3FFFFFH
000000H-00FFFFH
000000H-01FFFFH
000000H-03FFFFH
000000H-07FFFFH
000000H-0FFFFFH
000000H-1FFFFFH
000000H-3FFFFFH
3FF000H-3FFFFFH
3FE000H-3FFFFFH
3FC000H-3FFFFFH
3F8000H-3FFFFFH
3F8000H-3FFFFFH
000000H-000FFFH
000000H-001FFFH
000000H-003FFFH
000000H-007FFFH
000000H-007FFFH
Upper 1/64
Upper 1/32
Upper 1/16
Upper 1/8
Upper 1/4
Upper 1/2
Lower 1/64
Lower 1/32
Lower 1/16
Lower 1/8
Lower 1/4
Lower 1/2
ALL
Top Block
Top Block
Top Block
Top Block
Top Block
Bottom Block
Bottom Block
Bottom Block
Bottom Block
Bottom Block
2MB
64KB
128KB
256KB
512KB
1MB
2MB
4MB
4KB
8KB
16KB
32KB
32KB
4KB
63
63
63
63
0
0
0
0
8KB
16KB
32KB
32KB
0
Rev.1.0
50 - 8
ELM [ ELM ELECTRONICS ]
