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AT45DB011D Datasheet(PDF) 9 Page - ATMEL Corporation |
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AT45DB011D Datasheet(HTML) 9 Page - ATMEL Corporation |
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9 / 52 page  9 3639B–DFLASH–02/07 AT45DB011D [Preliminary] 7.6 Sector Erase The Sector Erase command can be used to individually erase any sector in the main memory. There are 4 sectors and only one sector can be erased at one time. To perform sector 0a or sec- tor 0b erase for the DataFlash standard page size (264 bytes), an opcode of 7CH must be loaded into the device, followed by three address bytes comprised of 5 don’t care bits, 7 page address bits (PA9 - PA3) and 12 don’t care bits. To perform a sector 1-3 erase, the opcode 7CH must be loaded into the device, followed by three address bytes comprised of 6 don’t care bits, 2 page address bits (PA8 - PA7) and 16 don’t care bits. To perform sector 0a or sector 0b erase for the binary page size (256 bytes), an opcode of 7CH must be loaded into the device, followed by three address bytes comprised of 6 don’t care bits and 7 page address bits (A17 - A11) and 11 don’t care bits. To perform a sector 1-3 erase, the opcode 7CH must be loaded into the device, followed by three address bytes comprised of 7 don’t care bit and 2 page address bits (A16 - A15) and 16 don’t care bits. The page address bits are used to specify any valid address location within the sector which is to be erased. When a low-to-high transition occurs on the CS pin, the part will erase the selected sector. The erase operation is internally self-timed and should take place in a maximum time of t SE. During this time, the status register will indicate that the part is busy. Table 7-1. Block Erase Addressing PA8/ A16 PA7/ A15 PA6/ A14 PA5/ A13 PA4/ A12 PA3/ A11 PA2/ A10 PA1/ A9 PA0/ A8 Block 000 00 0 X X X 0 000 00 1 X X X 1 000 01 0 X X X 2 000 01 1 X X X 3 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 111 10 0 X X X 60 111 10 1 X X X 61 111 11 0 X X X 62 111 11 1 X X X 63 |
Similar Part No. - AT45DB011D_07 |
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Similar Description - AT45DB011D_07 |
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