US Patent 11017857 Ranged content-addressable memory

A memory device comprises a block of ranged content-addressable memory (RCAM) including multiple RCAM memory elements, wherein each RCAM memory element is accessed by content that includes two values; a search register configured to store a search value; and logic circuitry coupled to the multiple content-addressable memory elements and the search register. The logic circuitry is configured to: compare the search value of the search register to the two values of each of the multiple RCAM memory elements in parallel; and identify an RCAM memory element according to the comparison.