Patent ID: 7751217
Filing Date: 2010-07-06
Classification: G11C

Abstract:
1. A content addressable memory cell comprising: a bit-line configured to supply a data bit; a complementary bit-line, the complementary bit-line configured to supply a complementary data bit, the complementary data bit being the inverse bit of the data bit; a phase change memory element including a first end and a second end, the first end of the phase change memory element electrically coupled to the bit-line, the phase change memory element configured to store the data bit; a complementary phase change memory element including a first end and a second end, the first end of the complementary phase change memory element electrically coupled to the complementary bit-line, the complementary phase change memory element configured to store the complementary data bit; a search-line access element and a word-line access element electrically coupled in parallel to the second end of the phase change memory element, the search-line access element electrically coupled to a search-line and the word-line access element electrically coupled to a word-line; a complementary search-line access element and a complementary word-line access element electrically coupled to the second end of the complementary phase change memory element, the complementary search-line access element electrically coupled to a complementary search-line and the complementary word-line access element electrically coupled to the word-line; and a match-line electrically coupled to the search-line and to the complementary search-line.