发明名称 |
Content addressable memory cell having improved layout |
摘要 |
A CAM cell comprises a pair of SRAM cells, each of which comprise a pair of cross coupled inverters for storing a data value and a pair of access devices for accessing a complementary pair of bit lines. The CAM cell further comprises a pair of compare circuits, each for comparing said data value stored in one of said SRAM cells with a search data value provided on a corresponding search line. The CAM cell has an equivalent number of n-channel and p-channel devices. The CAM cell uses p-channel transistors as access transistors to the SRAM cells in order to improve the efficiency of the layout of the cell array. The implementation ensures a balanced number of p-channel and n-channel devices per cell while still providing excellent functional characteristics.
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申请公布号 |
US6522562(B2) |
申请公布日期 |
2003.02.18 |
申请号 |
US20010894900 |
申请日期 |
2001.06.29 |
申请人 |
MOSAID TECHNOLOGIES INCORPORATED |
发明人 |
FOSS RICHARD |
分类号 |
G11C15/00;G11C15/04;H01L21/8244;H01L27/11;(IPC1-7):G11C15/00 |
主分类号 |
G11C15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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