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GD25VE20C データシート(PDF) 9 Page - GigaDevice Semiconductor (Beijing) Inc.

部品番号 GD25VE20C
部品情報  Uniform Sector Dual and Quad Serial Flash
PDF  55 Pages
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メーカー  GIGADEVICE [GigaDevice Semiconductor (Beijing) Inc.]
ホームページ  http://www.gigadevice.com/
Logo GIGADEVICE - GigaDevice Semiconductor (Beijing) Inc.

GD25VE20C データシート(HTML) 9 Page - GigaDevice Semiconductor (Beijing) Inc.

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Uniform Sector
Dual and Quad Serial Flash
GD25VE20C
9
5. DATA PROTECTION
The GD25VE20C provide 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 reset (66H+99H)
◆
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# goes low to protect 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 and reset command (66H+99H).
Table1.0 GD25VE20C Protected area size (CMP=0)
Status Register Content
Memory Content
BP4
BP3
BP2
BP1
BP0
Blocks
Addresses
Density
Portion
0
X
X
0
0
NONE
NONE
NONE
NONE
0
0
X
0
1
3
030000H-03FFFFH
64KB
Upper 1/4
0
0
X
1
0
2 and 3
020000H-03FFFFH
128KB
Upper 1/2
0
1
X
0
1
0
000000H-00FFFFH
64KB
Lower 1/4
0
1
X
1
0
0 and 1
000000H-01FFFFH
128KB
Lower 1/2
0
X
X
1
1
0 to 3
000000H-03FFFFH
256KB
ALL
1
X
0
0
0
NONE
NONE
NONE
NONE
1
0
0
0
1
3
03F000H-03FFFFH
4KB
Upper 1/64
1
0
0
1
0
3
03E000H-03FFFFH
8KB
Upper 1/32
1
0
0
1
1
3
03C000H-03FFFFH
16KB
Upper 1/16
1
0
1
0
X
3
038000H-03FFFFH
32KB
Upper 1/8
1
0
1
1
0
3
038000H-03FFFFH
32KB
Upper 1/8
1
1
0
0
1
0
000000H-000FFFH
4KB
Lower 1/64
1
1
0
1
0
0
000000H-001FFFH
8KB
Lower 1/32
1
1
0
1
1
0
000000H-003FFFH
16KB
Lower 1/16
1
1
1
0
X
0
000000H-007FFFH
32KB
Lower 1/8
1
1
1
1
0
0
000000H-007FFFH
32KB
Lower 1/8
1
X
1
1
1
0 to 3
000000H-03FFFFH
256KB
ALL



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