semiconductor memory decice having content addressable memory cell and data searching method thereof

摘要

The present invention relates to a semiconductor memory device, and more particularly, to a data searching method of a semiconductor memory device having an associative memory cell, comprising: an associative memory cell array having a plurality of associative memory cells and a random access memory cell, A method of determining whether to match by comparing data stored in a random access memory cell with search data applied from the outside through the associative memory cell, the match line to which the compared search data and the data stored in the random access memory cell are transferred are determined. Precharging; Precharging the bit lines; Inputting search data into the bit line; Receiving the search data through a bit line; And comparing the search data with data stored in a random access memory cell. In this manner, a stable search operation can be performed even when search data is entered in a section where the matchline is precharged, and the amount of current consumption can be reduced due to the matchline.