- Patent Title: Overvoltage protection for a fine grained negative wordline scheme
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Application No.: US14962273Application Date: 2015-12-08
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Publication No.: US09679635B2Publication Date: 2017-06-13
- Inventor: Harold Pilo , Richard S. Wu
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Roberts Mlotkowski Safran Cole & Calderon, P.C.
- Agent Steven Meyers; Andrew M. Calderon
- Main IPC: G11C5/14
- IPC: G11C5/14 ; G11C11/417 ; G11C8/08 ; G11C11/418

Abstract:
A fine grained negative wordline scheme for SRAM memories is disclosed. The scheme includes a circuit having a static random access memory (SRAM) cell including at least a wordline coupled to a plurality of NFETs of a transistor array. The circuit further includes a wordline driver including a plurality of inverters coupled between a wordline group decode node, a power supply and the wordline. Overvoltage on the wordline driver and NFETs of the SRAM cell are eliminated by applying a power gating mode and lowering the power supply voltage.
Public/Granted literature
- US20160093360A1 OVERVOLTAGE PROTECTION FOR A FINE GRAINED NEGATIVE WORDLINE SCHEME Public/Granted day:2016-03-31
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