Invention Grant
- Patent Title: Capacitor backup for SRAM
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Application No.: US13912324Application Date: 2013-06-07
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Publication No.: US08953365B2Publication Date: 2015-02-10
- Inventor: Karl R. Erickson , Phil C. Paone , David P. Paulsen , John E. Sheets, II , Gregory J. Uhlmann , Kelly L. Williams
- 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
- Agent Jonathan V. Sry; Robert R. Williams
- Main IPC: G11C11/24
- IPC: G11C11/24 ; G11C5/00 ; G11C11/419

Abstract:
Embodiments of the disclosure provide a method for backing up data in an SRAM device, and an SRAM device that includes a capacitive backup circuit for backing up data in an SRAM device. The method may include writing data to the SRAM cell by applying an input voltage to set an input node of cross-coupled inverters to a memory state. The method may also include backing up the data written to the SRAM cell by electrically coupling the input node to the capacitive backup circuit. The method may also include restoring the data stored in the capacitive backup circuit to the SRAM cell by electrically coupling the capacitive backup circuit to the input node.
Public/Granted literature
- US20140362635A1 CAPACITOR BACKUP FOR SRAM Public/Granted day:2014-12-11
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