A method for operating a read command of N complementary memory cells, the method includes the steps of determining if each of the first and second memory cells of the N complementary memory cells is in a first binary state or a second binary state, generating a count value by counting a total number of the first and second memory cells that are in the first binary state, and determining if the N complementary memory cells are programmed or erased based on a result of comparing the count value to a threshold number.