Translation - Japanese: pNORフラッシュへコマンドを書き込んでいる最中にリード操作を開始できますか？- KBA203670 - Community Translated (JA)
Can a READ be initiated while in the middle of writing commands to the pNOR FLASH?
Yes, you may read data from the flash memory array before a command sequence is complete; any command cycles already written to the flash (program or erase) are lost as soon as the read cycle is initiated. While this use case is possible, it is not the best practice. Insofar as flash commands are messages that are composed of a series of write cycles, it is best practice to treat each command (message) as an atomic (indivisible) operation.
The worst-case turnaround time for any flash command that does not involve the busy state is < 1 microsecond, so there is not much need to interrupt this class of command for reading.
There are also commands that involve flash busy time – for the GL-S family this includes the blank check command, programming commands, and erasing commands.
Check your datasheet for more details about commands for programming, erasing, suspending and resuming.