Invention Grant
- Patent Title: Semiconductor memory apparatus
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Application No.: US16399228Application Date: 2019-04-30
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Publication No.: US10818355B2Publication Date: 2020-10-27
- Inventor: Takaaki Fuchikami , Kazutaka Miyamoto , Hiromitsu Kimura , Kazuhisa Ukai
- Applicant: ROHM Co., LTD.
- Applicant Address: JP Kyoto
- Assignee: ROHM CO., LTD.
- Current Assignee: ROHM CO., LTD.
- Current Assignee Address: JP Kyoto
- Agency: Chip Law Group
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@3b34b925
- Main IPC: G11C11/22
- IPC: G11C11/22 ; G11C14/00 ; G11C11/412

Abstract:
Disclosed is a semiconductor memory device including a memory cell based on a static random access memory having a 6T or 4T2R configuration and including a first internal node, a second internal node, a first ferroelectric capacitor, and a second ferroelectric capacitor, the first ferroelectric capacitor and the second ferroelectric capacitor having respective first ends connected respectively to the first internal node and the second internal node. For recovering data stored in a non-volatile fashion in the first ferroelectric capacitor and the second ferroelectric capacitor, a first access transistor connected between the first internal node and a first bit line and a second access transistor connected between the second internal node and a second bit line are turned on, and respective capacitive components of the first bit line and the second bit line are used as load capacitances.
Public/Granted literature
- US20190341109A1 SEMICONDUCTOR MEMORY APPARATUS Public/Granted day:2019-11-07
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