RESISTIVE MEMORY DEVICE AND METHOD OF CONTROLLING REFRESH OF THE SAME

PURPOSE: A resistive memory apparatus and a refreshing control method thereof are provided to improve data reliability by periodically and/or aperiodically determining a refresh entry time. CONSTITUTION: A refresh reading process is performed in order to check a state of a plurality of memory units(...

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Bibliographic Details
Main Authors PARK, CHUL WOO, KANG, SANG BEOM, HWANG, HONG SUN, KIM, HO JUNG
Format Patent
LanguageEnglish
Korean
Published 22.03.2012
Subjects
INFORMATION STORAGE
PHYSICS
STATIC STORES
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Summary:PURPOSE: A resistive memory apparatus and a refreshing control method thereof are provided to improve data reliability by periodically and/or aperiodically determining a refresh entry time. CONSTITUTION: A refresh reading process is performed in order to check a state of a plurality of memory units(S11). A refresh entry state is determined with respect to each memory unit according to a data result read through the refresh reading process(S12). A refresh process is performed with respect to the memory unit which requires the refresh process according to a determined result(S13). A standard of the refresh reading process has a small margin of read data distribution compared to a standard of a normal reading process. A memory cell array is classified into a plurality of memory blocks. Each memory block is classified into a plurality of memory pages.
Bibliography:Application Number: KR20100090218