AT45DB321E datasheet(17/73 Pages) ETC2

17 / 73 page

AT45DB321E

8784F–DFLASH–11/2013

6.11 Program/Erase Resume(1)

The Program/Erase Resume command allows a suspended program or erase operation to be resumed and continue

where it left off.

To perform a Program/Erase Resume, an opcode of D0h must be clocked into the device. No address bytes need to be

clocked into the device, and any data clocked in after the opcode will be ignored. When the CS pin is deasserted, the

program or erase operation currently suspended will be resumed within a time of tRES. The PS1 bit, PS2 bit, or ES bit in

the Status Register will then be reset back to a Logic 0 state to indicate that the program or erase operation is no longer

suspended. In addition, the RDY/BUSY bit in the Status Register will indicate that the device is busy performing a

program or erase operation.

During a simultaneous Erase Suspend/Program Suspend condition, issuing the Program/Erase Resume command will

result in the program operation resuming first. After the program operation has been completed, the Program/Erase

Resume command must be issued again in order for the erase operation to be resumed.

While the device is busy resuming a program or erase operation, any attempts at issuing the Program/Erase Suspend

command will be ignored. Therefore, if a resumed program or erase operation needs to be subsequently suspended

again, the system must either wait the entire tRES time before issuing the Program/Erase Suspend command, or it must

check the status of the RDY/BUSY bit or the appropriate PS1, PS2, or ES bit in the Status Register to determine if the

previously suspended program or erase operation has resumed.

AT45DB321E Datasheet(PDF) 17 Page - List of Unclassifed Manufacturers