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AT45DB021D Datasheet(PDF) 27 Page - ATMEL Corporation |
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AT45DB021D Datasheet(HTML) 27 Page - ATMEL Corporation |
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27 / 52 page  27 3638B–DFLASH–02/07 AT45DB021D [Preliminary] 14.2 Operation Mode Summary The commands described previously can be grouped into four different categories to better describe which commands can be executed at what times. Group A commands consist of: 1. Main Memory Page Read 2. Continuous Array Read 3. Read Sector Protection Register 4. Read Sector Lockdown Register 5. Read Security Register Group B commands consist of: 1. Page Erase 2. Block Erase 3. Sector Erase 4. Chip Erase 5. Main Memory Page to Buffer Transfer 6. Main Memory Page to Buffer Compare 7. Buffer to Main Memory Page Program with Built-in Erase 8. Buffer to Main Memory Page Program without Built-in Erase 9. Main Memory Page Program through Buffer 10. Auto Page Rewrite Group C commands consist of: 1. Buffer Read 2. Buffer Write 3. Status Register Read 4. Manufacturer and Device ID Read Group D commands consist of: 1. Erase Sector Protection Register 2. Program Sector Protection Register 3. Sector Lockdown 4. Program Security Register If a Group A command is in progress (not fully completed), then another command in Group A, B, C, or D should not be started. However, during the internally self-timed portion of Group B commands 1 through 4, any command in Group C can be executed. During the internally self- timed portion of Group B commands 5 through 10, only Group C commands 3 and 4 can be exe- cuted. Finally, during the internally self-timed portion of a Group D command, only the Status Register Read command should be executed. |
Similar Part No. - AT45DB021D_07 |
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Similar Description - AT45DB021D_07 |
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