Invention Grant
US09202552B2 Dual port SRAM bitcell structures with improved transistor arrangement
有权
具有改进的晶体管布置的双端口SRAM位单元结构
- Patent Title: Dual port SRAM bitcell structures with improved transistor arrangement
- Patent Title (中): 具有改进的晶体管布置的双端口SRAM位单元结构
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Application No.: US14105939Application Date: 2013-12-13
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Publication No.: US09202552B2Publication Date: 2015-12-01
- Inventor: Bipul C. Paul , Randy W. Mann , Sangmoon J. Kim
- Applicant: GLOBALFOUNDRIES Inc.
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES INC.
- Current Assignee: GLOBALFOUNDRIES INC.
- Current Assignee Address: KY Grand Cayman
- Agency: Heslin Rothenberg Farley & Mesiti P.C.
- Agent Kristian Ziegler
- Main IPC: G11C11/00
- IPC: G11C11/00 ; G11C11/412 ; G11C8/16

Abstract:
Dual port static random access memory (SRAM) bitcell structures with improve symmetry in access transistors physical placement are provided. The bitcell structures may include, for example, two pairs of parallel pull-down transistors. The bitcell structures may also include pass-gate transistors PGLA and PGRA forming a first port, and pass-gate transistors PGLB and PGRB forming a second port. The pass-gate transistors PGLA and PGLB may be adjacent one another and a first side of the bitcell structure, and pass-gate transistors PGRA and PGRB may be adjacent one another and a second side of the bitcell structure. Each of the pass-gate transistors PGLA and PGLB may be connected with one of the pull-down transistors of one of the pairs of parallel pull-down transistors. Similarly, each of the pass-gate transistors PGRA and PGRB may be connected with one of the pull-down transistors of the other pair of parallel pull-down transistors.
Public/Granted literature
- US20150170735A1 DUAL PORT SRAM BITCELL STRUCTURES WITH IMPROVED TRANSISTOR ARRANGEMENT Public/Granted day:2015-06-18
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