Storage control device, storage device, information processing system, and processing methods therefor

In the present invention, if write data is a first value, a threshold setting unit (360) sets a first threshold for a read processing unit (317), whereupon a bit operation unit (315) rewrites a memory cell (316) if read data is a second value. If write data is a second value, the threshold setting unit sets a second threshold for the read processing unit, whereupon the bit operation unit rewrites the memory cell if the read data is the first value. By generating read data using first and second thresholds that are different from a standard threshold, data-hold characteristics are improved.