The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 06, 2017
Filed:
May. 14, 2015
Renesas Electronics Corporation, Kanagawa, JP;
Hideto Matsuoka, Kanagawa, JP;
Masanobu Kishida, Tokyo, JP;
RENESAS ELECTRONICS CORPORATION, Tokyo, JP;
Abstract
A technique for reducing power consumption of a content addressable memory (CAM) system is provided. In a CAM system, an equalizer circuit is coupled to a border portion between a plurality of match line parts generated by dividing each match line corresponding to a piece of entry data, and a precharge circuit precharges each of the match line parts collectively corresponding to a piece of entry data to voltage VDD or VSS. When comparing the entry data and search data, the equalizer circuit couples, in accordance with a control signal, the match line parts after the match line parts are precharged by the precharge circuit. In an equalization period, search operation through the search line is started. A search transistor for comparing search data and entry data includes an NMOS search transistor.