Patent ID: 8390322
Filing Date: 2013-03-05
Classification: G11C,H01L

Abstract:
1. A method of operating a non-volatile logic circuit, comprising: a step (a) of preparing the non-volatile logic circuit, wherein: a step (b) of writing one state selected from the group consisting of first, second, third, and fourth states into the non-volatile logic circuit, wherein: when the first state is written, voltages, which satisfy V1>Va and V1>Vb, are applied, when the second state is written, voltages, which satisfy V1<Va and V1>Vb, are applied, when the third state is written, voltages, which satisfy V1>Va and V1<Vb, are applied, when the fourth state is written, voltages, which satisfy V1<Va and V1<Vb, are applied the first state is a low resistant states, and the second, third, and fourth states are high resistant states; and a step (c) of measuring current generated by applying an voltage between the electric current source electrode and the output electrode to determine on the basis of the current which the high or low resistant state the non-volatile logic circuit has.