Patent ID: 11967378
Assignee: MACRONIX INTERNATIONAL CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 5:
6. A data searching and comparing method for an analog content addressable memory (CAM) device, the data searching and comparing method including:
converting an analog search data into a first analog search voltage and a second analog search voltage;
comparing the first analog search voltage and the second analog search voltage with a plurality of match ranges of a plurality of analog CAM memory cells, wherein a plurality of analog storage data of the analog CAM cells are converted into the match ranges, the match ranges are determined based on a plurality of first threshold voltages and a plurality of second threshold voltages of the analog CAM cells;
generating a plurality of memory cell currents from the analog CAM memory cells; and
detecting the memory cell currents to generate a plurality of sensing results, or detecting a plurality of match line voltages on a plurality of match lines coupled to the analog CAM memory cells to generate the plurality of search results, wherein the analog CAM cells are coupled to a sensing amplifier, and the match ranges of the analog CAM cells are adjusted by adjusting a current sensing level of the sensing amplifier.