Why does the S25FL032P array architecture display 64KB uniform sectors and not the 4KB sub-sectors? - KBA203371

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Question:

Why does the S25FL032P array architecture display 64KB uniform sectors and not the 4KB sub-sectors?

 

Answer:

The S25FL032P will display 64KB uniform sectors for page program and bulk erase operation. However, to erase the 4KB sub-sectors, use the P4E command (20h); or use the P8E command (40h) to erase 8KB (2 x 4KB) sub-sectors. For page program, the page size can range from 1 to 256bytes.Therefore, there is a maximum of 16 page program operations within a 4KB sector (16 x 256B). Keep in mind that the S25FL032P will always display 64KB sectors for page program and bulk erase operations. However, the 4KB sub-sector may be erased individually by using the P4E command (20h). This configuration remains true, regardless as to whether or not TBPARM = 0 or TBPARM = 1.