发明公开
- 专利标题: STABLE SRAM BITCELL DESIGN UTILIZING INDEPENDENT GATE FINFET
- 专利标题(中): 设计一个稳定的SRAM单元采用独立栅极FET
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申请号: EP11787967.6申请日: 2011-11-04
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公开(公告)号: EP2636039A1公开(公告)日: 2013-09-11
- 发明人: JUNG, Seong-Ook , KANG, Mingu , PARK, Hyunkook , SONG, Seung-Chul , ABU-RAHAMA, Mohamed , HAN, Beom-Mo , GE, Lixin , WANG, Zhongze
- 申请人: Qualcomm Incorporated
- 申请人地址: 5775 Morehouse Drive San Diego, CA 92121 US
- 专利权人: Qualcomm Incorporated
- 当前专利权人: Qualcomm Incorporated
- 当前专利权人地址: 5775 Morehouse Drive San Diego, CA 92121 US
- 代理机构: Dunlop, Hugh Christopher
- 优先权: US939260 20101104
- 国际公布: WO2012061666 20120510
- 主分类号: G11C11/412
- IPC分类号: G11C11/412 ; H01L21/8244 ; H01L27/11
摘要:
Stable SRAM cells utilizing Independent Gate FinFET architectures provide improvements over conventional SRAM cells in device parameters such as Read Static Noise Margin (RSNM) and Write Noise Margin (WNM). Exemplary SRAM cells comprise a pair of storage nodes, a pair of bit lines, a pair of pull-up devices, a pair of pull-down devices and a pair of pass-gate devices. A first control signal and a second control signal are configured to adjust drive strengths of the pass-gate devices, and a third control signal is configured to adjust drive strengths of the pull-up devices, wherein the first control signal is routed orthogonal to a bit line direction, and the second and third control signals are routed in a direction same as the bit line direction. RSNM and WNM are improved by adjusting drive strengths of the pull-up and pass-gate devices during read and write operations.
公开/授权文献
- EP2636039B1 STABLE SRAM BITCELL DESIGN UTILIZING INDEPENDENT GATE FINFET 公开/授权日:2015-01-14
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