Storage device, information processing apparatus, and storage device control method

An information processing apparatus comprising:

• a memory control unit that gives an instruction to read a memory cell;
• a reference cell circuit in which a resistance value changes to a predetermined initial value when an initialization signal exceeding a predetermined reversal threshold is input;
• a reference side signal source that inputs a reference side read signal of a predetermined value not exceeding the predetermined reversal threshold to the reference cell circuit after the initialization signal is input to the reference cell circuit when the instruction to read is given;
• a cell side signal source that inputs a cell side read signal of the predetermined value to the memory cell after the initialization signal is input;
• and
• a comparison unit that compares a reference signal output from the reference cell circuit into which the reference side read signal has been input, and a cell signal output from the memory cell into which the cell side read signal has been input, and acquires the comparison result as read data.

A control method for a storage device, comprising:

• a reference side signal inputting step for inputting, to a reference cell circuit in which a resistance value changes to a predetermined initial value when an initialization signal exceeding a predetermined reversal threshold is input, a reference side read signal of a predetermined value not exceeding the predetermined reversal threshold, after the initialization signal is input to the reference cell circuit, when there is an instruction to read a memory cell;
• a cell side signal inputting step for inputting a cell side read signal of the predetermined value to the memory cell after the initialization signal is input;
• and
• a comparing step for comparing a reference signal output from the reference cell circuit into which the reference side read signal has been input, and a cell signal output from the memory cell into which the cell side read signal has been input, and acquires the comparison result as read data.