Ferroelectric memory device and operating method for the same

An operating method for a ferroelectric memory device comprising:

• copying beforehand data currently held at one of a memory cell for refresh and a memory block to a cache bank when refreshing;
• using the data stored in the cache bank and continuing the refresh processing when an external access request is sent to the memory block in the refresh processing;
• and
• writing back the data stored in the cache bank to the memory block after completing of the refresh, and wherein
• the ferroelectric memory device comprises:
• a plurality of memory banks configured to include a memory cell array composed of a ferroelectric memory;
• the cache bank configured to be bus-connected with the memory banks, and for copying data stored in the memory banks;
• and a memory bank/cache control sequencer for accessing and refreshing to the memory banks and the cache bank.

An operating method for a ferroelectric memory device comprising:

• determining whether a cache memory has target data when the ferroelectric memory device is accessed;
• accessing the cache memory when the cache memory has target data and when being a cache hit;
• accessing a target memory bank in the case of read-out when the cache memory has target data and when being a cache miss;
• and
• writing back the data stored in the cache memory to an original memory bank in the case of write-in when the cache memory has target data and when being a cache miss, and wherein
• the ferroelectric memory device comprises:
• a plurality of memory banks configured to include a memory cell array composed of a ferroelectric memory;
• the cache bank configured to be bus-connected with the memory banks, and for copying data stored in the memory banks;
• a memory bank/cache control sequencer for accessing and refreshing to the memory banks and the cache bank;
• and a cache memory configured to include a determination circuit for determining whether there is any target data when accessed.