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GD25WD20CSFG Scheda tecnica(PDF) 11 Page - GigaDevice Semiconductor (Beijing) Inc.

Il numero della parte GD25WD20CSFG
Spiegazioni elettronici  Uniform Sector Standard and Dual Serial Flash
PDF  49 Pages
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Produttore elettronici  GIGADEVICE [GigaDevice Semiconductor (Beijing) Inc.]
Homepage  http://www.gigadevice.com/
Logo GIGADEVICE - GigaDevice Semiconductor (Beijing) Inc.

GD25WD20CSFG Scheda tecnica(HTML) 11 Page - GigaDevice Semiconductor (Beijing) Inc.

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Uniform Sector
Standard and Dual Serial Flash
GD25WD40C/20C
11
5. DATA PROTECTION
The GD25WD40C/20C 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
reset to 0 in the following situations:
-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 (BP2, BP1, BP0) bits define the section of the protected memory area
which is read-only and unalterable.
◆
Hardware Protection Mode: WP# goes low to protect the BP0~BP2 bits and SRP bits.
◆
Deep Power-Down Mode: In Deep Power-Down Mode, all commands are ignored except the Release from Deep
Power-Down Mode command.
◆
Write Inhibit Voltage (VWI): Device would reset automatically when VCC is below a certain threshold VWI.
Table3(a) GD25WD40C Protected area size
Status Register Content
Memory Content
BP2
BP1
BP0
Blocks
Addresses
Density
Portion
0
0
0
NONE
NONE
NONE
NONE
0
0
1
Sector 0 to 125
000000H-07DFFFH
504KB
Lower
126/128
0
1
0
Sector 0 to 123
000000H-07BFFFH
496KB
Lower 124/128
0
1
1
Sector 0 to 119
000000H-077FFFH
480KB
Lower 120/128
1
0
0
Sector 0 to 111
000000H-06FFFFH
448KB
Lower 112/128
1
0
1
Sector 0 to 95
000000H-05FFFFH
384KB
Lower 96/128
1
1
0
Sector 0 to 63
000000H-03FFFFH
256KB
Lower 64/128
1
1
1
All
000000H-07FFFFH
512KB
ALL
Table3(b) GD25WD20C Protected area size
Status Register Content
Memory Content
BP2
BP1
BP0
Blocks
Addresses
Density
Portion
0
0
0
NONE
NONE
NONE
NONE
0
0
1
Sector 0 to 61
000000H-03DFFFH
248KB
Lower 62/64
0
1
0
Sector 0 to 59
000000H-03BFFFH
240KB
Lower 60/64
0
1
1
Sector 0 to 55
000000H-037FFFH
224KB
Lower 56/64
1
0
0
Sector 0 to 47
000000H-02FFFFH
192KB
Lower 48/64
1
0
1
Sector 0 to 31
000000H-01FFFFH
128KB
Lower 32/64
1
1
X
All
000000H-03FFFFH
256KB
ALL



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