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GD25LE40C データシート(PDF) 11 Page - GigaDevice Semiconductor (Beijing) Inc. |
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GD25LE40C データシート(HTML) 11 Page - GigaDevice Semiconductor (Beijing) Inc. |
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11 / 75 page ![]() 1.8V Uniform Sector Dual and Quad Serial Flash GD25LE40C/20C/10C/05C 11 5 DATA PROTECTION The GD25LE40C/20C/10C/05C 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/-Software reset (66H+99H) -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# 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 software reset (66H+99H). Table1. GD25LE40C Protected area size (CMP=0) Status Register Content Memory Content BP4 BP3 BP2 BP1 BP0 Blocks Addresses Density Portion X X 0 0 0 NONE NONE NONE NONE 0 0 0 0 1 7 070000H-07FFFFH 64KB Upper 1/8 0 0 0 1 0 6 and 7 060000H-07FFFFH 128KB Upper 1/4 0 0 0 1 1 4 to 7 040000H-07FFFFH 256KB Upper 1/2 0 1 0 0 1 0 000000H-00FFFFH 64KB Lower 1/8 0 1 0 1 0 0 and 1 000000H-01FFFFH 128KB Lower 1/4 0 1 0 1 1 0 to 3 000000H-03FFFFH 256KB Lower 1/2 0 X 1 X X 0 to 7 000000H-07FFFFH 512KB ALL 1 0 0 0 1 7 07F000H-07FFFFH 4KB Top Block 1 0 0 1 0 7 07E000H-07FFFFH 8KB Top Block 1 0 0 1 1 7 07C000H-07FFFFH 16KB Top Block 1 0 1 0 X 7 078000H-07FFFFH 32KB Top Block 1 0 1 1 0 7 078000H-07FFFFH 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 X 0 000000H-007FFFH 32KB Bottom Block 1 1 1 1 0 0 000000H-007FFFH 32KB Bottom Block 1 X 1 1 1 0 to 7 000000H-07FFFFH 512KB ALL Table1a. GD25LE40C Protected area size (CMP=1) Status Register Content Memory Content BP4 BP3 BP2 BP1 BP0 Blocks Addresses Density Portion X X 0 0 0 0 to 7 000000H-07FFFFH 512KB ALL |
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