Two-Step Write Scheme for Reducing Sneak-Path Leakage in Complementary Memristor Array

In this paper, a new two-step write scheme is proposed to minimize sneak-path leakage in complementary memristor (CM) array, where no selection device is needed. When R _RESET/R _SET = 100, the new two-step write scheme can increase the array size of CMs 10 times larger than the conventional write. If R _RESET/R _SET is increased to 500, we can increase the passive array size up to 1000 × 1000 with maintaining the read sensing margin lager than 10% of V_DD. The two-step write scheme will be very essential in realizing passive cross-point array without any selection device that is known to be the ideal architecture for future 3-D memories.