Invention Grant
- Patent Title: Static random access memory (SRAM) cells
- Patent Title (中): 静态随机存取存储器(SRAM)单元
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Application No.: US11402401Application Date: 2006-04-12
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Publication No.: US07898894B2Publication Date: 2011-03-01
- Inventor: Leland Chang , Rajiv V. Joshi , Stephen V. Kosonocky
- Applicant: Leland Chang , Rajiv V. Joshi , Stephen V. Kosonocky
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Brian Verminski Hoffman Warnick LLC
- Main IPC: G11C11/41
- IPC: G11C11/41 ; G11C8/16 ; G11C5/06

Abstract:
The present invention provides an improved SRAM cell. Specifically, the present invention provides an SRAM cell having one or more sets of stacked transistors for isolating the cell during a read operation. Depending on the embodiment, the SRAM cell of the present invention can have eight or ten transistors. Regardless, the SRAM cell of the present invention typically includes separate/decoupled write word and read word lines, a pair of cross-coupled inverters, and a complimentary pair of pass transistors that are coupled to the write word line. Each set of stacked transistors implemented within the SRAM cell has a transistor that is coupled to a bit line as well as the read word line.
Public/Granted literature
- US20070242513A1 Static random access memory (SRAM) cells Public/Granted day:2007-10-18
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