Published Paper Details:

Content-addressable memory (CAM) is a type computer memory for search applications that operates like a hardware search engine. It is used in certain very-high-speed searching applications. It is also known as associative memory, associative storage, or associative array. It compares input search data against a table of stored data, and returns the address of matching data. It is capable of searching its whole contents in a single clock cycle. It does that by pairing the SRAM-based memory with additional logic comparison circuitry that is active on every clock cycle. The time required to find an item stored in memory for access can be reduced by identifying its content rather than by its address. The CAM has a parallel active circuitry which consumes more power and the main challenge in designing the CAM is to reduce the power consumption without reducing the speed and memory density. It provides a performance advantage over other memory search algorithms, such as binary or tree-based searches or look-aside tag buffers, by comparing the desired information against the entire list of pre-stored entries simultaneously, often resulting in an order-of-magnitude reduction in the search time. Here review of low power match line sensing techniques is concentrated. There are different types of CAM architectures available today, each of them having its own advantages as well as disadvantages. Here a comparative study on different Content Addressable Memory architecture is done.