STORAGE CONTROL APPARATUS, STORAGE APPARATUS, AND STORAGE CONTROL METHOD

Detecting a defective cell in a memory in consideration of an error property difference depending on the storage state. A determination unit determines whether there is a possibility of defect for each of unit-of-storages on a memory cell formed with a non-volatile memory. The non-volatile memory un...

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Hauptverfasser: HONJO MATATOSHI, TERADA HARUHIKO, OKUBO HIDEAKI, FUJINAMI YASUSHI, NAKANISHI KENICHI, YAMAMOTO TETSUYA, SHIIMOTO TSUNENORI, ISHII KEN, IWAKI HIROYUKI, SHINBASHI TATSUO
Format: Patent
Sprache:eng
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Zusammenfassung:Detecting a defective cell in a memory in consideration of an error property difference depending on the storage state. A determination unit determines whether there is a possibility of defect for each of unit-of-storages on a memory cell formed with a non-volatile memory. The non-volatile memory undergoes either a reset operation that transitions a state from a low resistive state (LRS) to a high resistive state (HRS) or a set operation that transitions the state from the high resistive state to the low resistive state. The determination unit determines a unit-of-storage in which the number of errors in predetermined one of the reset operation and the set operation has exceeded a predetermined standard, as a unit-of-storage suspected of having a defect.