 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
AT45DB081D Datasheet(PDF) 10 Page - ATMEL Corporation |
|
|
|||||||||||||||||||||||||||||
AT45DB081D Datasheet(HTML) 10 Page - ATMEL Corporation |
|
|
10 / 54 page  10 3596L–DFLASH–04/09 AT45DB081D 7.6 Sector Erase The Sector Erase command can be used to individually erase any sector in the main memory. There are 16 sectors and only one sector can be erased at one time. To perform sector 0a or sector 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 3 don’t care bits, 9 page address bits (PA11 - PA3) and 12 don’t care bits. To perform a sector 1-15 erase, the opcode 7CH must be loaded into the device, followed by three address bytes comprised of 3 don’t care bits, 4 page address bits (PA11 - PA8) and 17 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 4 don’t care bit and 9 page address bits (A19 - A11) and 11 don’t care bits. To perform a sector 1-15 erase, the opcode 7CH must be loaded into the device, followed by three address bytes comprised of 4 don’t care bit and 4 page address bits (A19 - A16) 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 tSE. During this time, the status register will indicate that the part is busy. 7.7 Chip Erase The entire main memory can be erased at one time by using the Chip Erase command. To execute the Chip Erase command, a 4-byte command sequence C7H, 94H, 80H and 9AH must be clocked into the device. Since the entire memory array is to be erased, no address bytes need to be clocked into the device, and any data clocked in after the opcode will be ignored. After the last bit of the opcode sequence has been clocked in, the CS pin can be deas- serted to start the erase process. The erase operation is internally self-timed and should take place in a time of tCE. During this time, the Status Register will indicate that the device is busy. The Chip Erase command will not affect sectors that are protected or locked down; the contents of those sectors will remain unchanged. Only those sectors that are not protected or locked down will be erased. Table 7-2. Sector Erase Addressing PA11/ A19 PA10/ A18 PA9/ A17 PA8/ A16 PA7/ A15 PA6/ A14 PA5/ A13 PA4/ A12 PA3/ A11 PA2/ A10 PA1/ A9 PA0/ A8 Sector 000000 000 X X X 0a 000000 001 X X X 0b 0001 XXXXXX XX 1 0010 XXXXXX XX 2 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 1100 XXXXXX XX 12 1101 XXXXXX XX 13 1110 XXXXXX XX 14 1111 XXXXXX XX 15 |
Similar Part No. - AT45DB081D_09 |
|
Similar Description - AT45DB081D_09 |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
