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Non-Volatile Ternary Content-Addressable Memory With Bi-Directional Voltage Divider Control And Multi-Step Search
Patent

Non-Volatile Ternary Content-Addressable Memory With Bi-Directional Voltage Divider Control And Multi-Step Search

National Tsing Hua university, 張孟凡, 羅介甫, 林建呈 and 李岳陞
22/11/2016

Abstract

A cell for a non-volatile ternary content-addressable (TCAM) memory is provided. The cell comprises a first variable resistive element, a first transistor and a charge control transistor. Two terminals of the first variable resistive element are respectively electrically coupled to a first search-line and a storage node. A drain electrode of the first transistor is electrically coupled to the storage node. A source electrode of the first transistor is electrically coupled to a low-side search-line. A gate electrode of the charge control transistor coupled to a match-line is electrically coupled to the storage node. When the cell operates in a search phase and the first transistor is turned on, a pulse voltage is applied across the first search-line and the low-side search-line for determining whether the voltage of the storage node is larger than a match threshold during the period of the pulse.

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