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GD25Q64 Datasheet(PDF) 8 Page - ELM Electronics

Part # GD25Q64
Description  3.3V Uniform Sector Dual and Quad Serial Flash
PDF  50 Pages
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Manufacturer  ELM [ELM Electronics]
Direct Link  http://www.elmelectronics.com
Logo ELM - ELM Electronics

GD25Q64 Datasheet(HTML) 8 Page - ELM Electronics

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8
Rev.1.1
50 -
http://www.elm-tech.com
GD25Q64CxIGx 3.3V Uniform Sector Dual and Quad Serial Flash
5. DATA PROTECTION
The GD25Q64C 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.
Status Register Content
Memory Content
BP4 BP3 BP2 BP1 BP0
Blocks
Addresses
Density
Portion
×
×
0
0
0
NONE
NONE
NONE
NONE
0
0
0
0
1
126 to 127
7E0000H-7FFFFFH
128KB
Upper 1/64
0
0
0
1
0
124 to 127
7C0000H-7FFFFFH
256KB
Upper 1/32
0
0
0
1
1
120 to 127
780000H-7FFFFFH
512KB
Upper 1/16
0
0
1
0
0
112 to 127
700000H-7FFFFFH
1MB
Upper 1/8
0
0
1
0
1
96 to 127
600000H-7FFFFFH
2MB
Upper 1/4
0
0
1
1
0
64 to 127
400000H-7FFFFFH
4MB
Upper 1/2
0
1
0
0
1
0 to 1
000000H-01FFFFH
128KB
Lower 1/64
0
1
0
1
0
0 to 3
000000H-03FFFFH
256KB
Lower 1/32
0
1
0
1
1
0 to 7
000000H-07FFFFH
512KB
Lower 1/16
0
1
1
0
0
0 to 15
000000H-0FFFFFH
1MB
Lower 1/8
0
1
1
0
1
0 to 31
000000H-1FFFFFH
2MB
Lower 1/4
0
1
1
1
0
0 to 63
000000H-3FFFFFH
4MB
Lower 1/2
×
×
1
1
1
0 to 127
000000H-7FFFFFH
8MB
ALL
1
0
0
0
1
127
7FF000H-7FFFFFH
4KB
Top Block
1
0
0
1
0
127
7FE000H-7FFFFFH
8KB
Top Block
1
0
0
1
1
127
7FC000H-7FFFFFH
16KB
Top Block
1
0
1
0
×
127
7F8000H-7FFFFFH
32KB
Top Block
1
0
1
1
0
127
7F8000H-7FFFFFH
32KB
Top Block
1
1
0
0
1
0
000000H-000FFFH
4KB
Bottom Block
1
1
0
1
0
0
000000H-001FFFH
8KB
Bottom Block
1
1
0
1
1
0
000000H-003FFFH
16KB
Bottom Block
1
1
1
0
×
0
000000H-007FFFH
32KB
Bottom Block
1
1
1
1
0
0
000000H-007FFFH
32KB
Bottom Block
Table1.0 GD25Q64C Protected area size (CMP=0)



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