Writing scheme for phase change material-content addressable memory

摘要

A method for programming a Phase Change Material-Content Addressable Memory (PCM-CAM). The method includes receiving a word to be written in a PCM-CAM. The word includes low bits represented by a low resistance state in the PCM-CAM and high bits represented by a high resistance state in the PCM-CAM. The method further includes repeatedly writing the low bits in memory cells of the PCM-CAM until the resistance of the memory cells are below a threshold value, and writing the high bits in memory cells of the PCM-CAM only once.