Novel Memristor-based Energy Efficient Compact 5T4M Ternary Content Addressable Memory

Memristor-based ternary content addressable memory (MTCAM) is a form of special memory where the memristor controls the primary operation instead of transistors. In addition, a memristor is a kind of particular passive element with two terminals that keeps the data as memory when the power goes down. This paper proposes a novel 5T4M MTCAM that is compact in size, efficient in energy consumption, and capable of restoring data. The proposed design uses BSIM 32nm CMOS PTM as a transistor model and a modified Biolek model as a memristor model for simulation. 16x16 array of MTCAM has been used with pre-charge low matchline (ML) sensing. This novel MTCAM offers 633ps of search time and 1.65fJ/digit/search of search energy which are lower than the other existing designs. In addition, this design can restore the data in successive search cycles though it performs its write and search operations using the same nodes.