- 专利标题: Ultra dense and stable 4T SRAM cell design having NFETs and PFETs
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申请号: US15849367申请日: 2017-12-20
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公开(公告)号: US10381068B2公开(公告)日: 2019-08-13
- 发明人: Myung-Hee Na , Robert Wong , Jens Haetty , Sean Burns
- 申请人: International Business Machines Corporation
- 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
- 代理机构: Michael J. Chang, LLC
- 代理商 Vazken Alexanian
- 主分类号: G11C11/412
- IPC分类号: G11C11/412 ; H01L27/11 ; H01L27/088 ; G11C11/419 ; H01L27/118
摘要:
Ultra dense and stable 4T SRAM designs are provided. In one aspect, a 4T SRAM bitcell includes: two NFETs cross-coupled with two PFETs, wherein the NFETs are both connected directly to a word line, wherein a first one of the PFETs is connected to a first bit line via a first one of the NFETs and a second one of the PFETs is connected to a second bit line via a second one of the NFETs, and wherein the PFETs are each separately connected to ground. An SRAM device including the present 4T SRAM bitcell as well as a method of operating the SRAM device are also provided.
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