公开(公告)号：KR100684115B1

公开(公告)日：2007-02-16

申请号：KR1020060010766

申请日：2006-02-03

Applicant: 재단법인서울대학교산학협력재단 ,  (주)글로넷시스템즈

Inventor： 정덕균 ,  김영덕

IPC: G11C15/00

Abstract: A range-matching cell and a CAM(Content Addressable Memories) using the same are provided to use a memory more efficiently, by providing an amplitude comparison operator in performing range searching using amplitude comparison. A bit line pair comprises a bit line(BL) and an inverted bit line(/BL) for transmitting data. A memory cell(100) is connected to a word line and the bit line pair, and stores the data transmitted through the bit line pair when the word line is enabled. A search line pair comprises a search line(SL) and an inverted search line(/SL) for transmitting search data. A first comparison part(110) is connected to the memory cell, the search line pair and a match line(ML), and turns on or off a first switching device serially connected to the match line in response to the data stored in the memory cell and the search data transmitted through the search line. A second comparison part(120) connects the match line to a ground voltage or a predetermined voltage in response to the search data transmitted through the search line and the stored operator data when the first switching device is turned off.

Abstract translation: 通过在使用幅度比较执行范围搜索时提供幅度比较运算器，提供范围匹配单元和使用该单元的CAM（内容可寻址存储器）以更高效地使用存储器。 位线对包括用于传输数据的位线（BL）和反转位线（/ BL）。 存储器单元（100）连接到字线和位线对，并且当字线被使能时存储通过位线对传输的数据。 搜索线对包括用于发送搜索数据的搜索线（SL）和反向搜索线（SL）。 第一比较部分（110）连接到存储单元，搜索线对和匹配线（ML），并且响应于存储在存储器中的数据而打开或关闭串行连接到匹配线的第一开关装置 小区和通过搜索线传输的搜索数据。 当第一开关装置断开时，第二比较部分（120）响应于通过搜索线传输的搜索数据和存储的操作者数据将匹配线连接到地电压或预定电压。