发明授权
- 专利标题: Ternary content addressable memory using phase change devices
- 专利标题(中): 使用相变装置的三元内容可寻址存储器
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申请号: US12399346申请日: 2009-03-06
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公开(公告)号: US08120937B2公开(公告)日: 2012-02-21
- 发明人: Brian L. Ji , Chung H. Lam , Robert K. Montoye , Bipin Rajendran
- 申请人: Brian L. Ji , Chung H. Lam , Robert K. Montoye , Bipin Rajendran
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理商 Ido Tuchman; Vazken Alexanian
- 主分类号: G11C10/00
- IPC分类号: G11C10/00 ; G11C11/00 ; G11C11/56
摘要:
A content addressable memory device with a plurality of memory cells storing ternary data values of high, low, and don't care. An aspect of the content addressable memory device is the use of first memory elements and second memory elements in the memory cells. The first and second memory elements are electrically coupled in parallel circuit to a match-line. The first memory elements are coupled to first word-lines and the second memory elements are coupled to second word-lines. The first memory elements are configured to store low resistance states if the ternary data value is low and high resistance states if the ternary data value is either high or don't care. The second memory elements are configured to store the low resistance states if the ternary data value is high and the high resistance states if the ternary data value is either low or don't care.
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