NAND interface

ST72681

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Using this scheme, a logical address range doesn’t correspond to a constant block. A write

command repeated several times to the same logical address writes physically into different

blocks.

This method shares the wearing evenly across all blocks of the concerned zone.

4.5

NAND interface configuration

Applications based on ST72681 can be configured through a dedicated PC software tool.

The NAND RE and WE signals frequencies can be independently configured to 30 MHz, 20

MHz, 15 MHz, 12 MHz and 10 MHz.

The logical size reduction factor can be configured to 90% or 50% in the event of having too

many bad blocks. this option resizes the used blocks part of the LUT to 900 or 500.