Introduction
KE5B256B1 is a 256k-bit CAM (Content Addressable Memory) device with a new architecture. The main function of the LSI is fast searching of data on the search data table stored in CAM. User can define the row/column table size flexibility. The width of one entry in the search data table can be selected from 32 bits to 256 bits, in increments of 32 bits (1 segment). User can define the area to be searched in an entry freely in terms of the position and bit width. The search operation is executed for each segment, and the cycle time is 80ns with the fast operation characteristic of CAMs. KE5B256B1 provides 3 ports, an Input Port, Output Port and CPU Port. These ports are designed to have the most appropriate functionality.