| http://www.w3.org/ns/prov#value | - A semiconductor memory device comprising:a non-volatile memory unit having a plurality of blocks, each block including at least one sector, the at least one sector including a data storing region and a multi-bit flag region for storing a flag; and a control unit for writing, in an erase mode, a first bit of the flag region of a predetermined sector so that the sector is set to a spuriously-erased
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