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Multi-Pole Nem Relays and Multiple-Bits-Per-Cell Rram for Efficient 3-D ICS
Multi-Pole Nem Relays and Multiple-Bits-Per-Cell Rram for Efficient 3-D ICS
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211151142
- ISBN
- 9798383706251
- DDC
- 621
- 저자명
- Levy, Akash.
- 서명/저자
- Multi-Pole Nem Relays and Multiple-Bits-Per-Cell Rram for Efficient 3-D ICS
- 발행사항
- [Sl] : Stanford University, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 180 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-02, Section: B.
- 주기사항
- Advisor: Raina, Priyanka.
- 학위논문주기
- Thesis (Ph.D.)--Stanford University, 2024.
- 초록/해제
- 요약In this dissertation, I present techniques for improving the power, performance, and area of integrated circuits (ICs) through 3-D integration of two emerging nanotechnologies: (1) resistive random-access memory (RRAM), a non-volatile memory with multiple-bits-per-cell storage capability, and (2) nanoelectromechanical (NEM) relays, nano-scale mechanical relays that can be actuated electrostatically. In modern ICs for edge computing, data movement between on and off-chip memories typically consumes a large fraction of the total power. Dense, non-volatile embedded memory can reduce/eliminate off-chip data movement by keeping frequently-read application data always on chip. RRAM is a good candidate for such a memory, especially because it can store multiple bits per cell, achieving high density on-chip storage. However, efficient and reliable operation with multiple-bits-per-cell RRAM has been a challenge due to (1) stochastic device behavior during programming that results in large pulse counts with traditional write-verify methods, and (2) reliability issues arising from resistance relaxation. Towards the goal of achieving efficient and reliable multiple-bits-per-cell RRAM, I present three contributions: (1) range-dependent adaptive resistance (RADAR) tuning, a fast and energy-efficient programming method for multiple-bits-per-cell RRAM that uses an adaptive combination of coarse- and fine-grained cell resistance tuning, yielding a 2.4x reduction in pulse count over prior methods, (2) characterization of resistance relaxation behavior in three RRAM technologies and analysis of its implications for multiple-bits-per-cell storage, and (3) efficient multiple-bits-per-cell embedded RRAM (EMBER), the first demonstration of a fully-integrated multiple-bits-per-cell RRAM macro. EMBER contains a multiple-bits-per-cell read and write controller with a high degree of flexibility that enables good level allocation (mitigating reliability issues from resistance relaxation) and programming scheme optimization (yielding low-energy, low-latency multiple-bits-per-cell writes). Finally, in reconfigurable ICs, in addition to the memories, the routing fabric consumes a large fraction of the overall area and power. I demonstrate that replacing CMOS routing switches with 3-D integrated multi-pole nanoelectromechanical (NEM) relays in a coarse-grained reconfigurable array (CGRA) can achieve 19% lower area and 10% lower power at iso-performance.
- 일반주제명
- Energy
- 일반주제명
- Bandwidths
- 기타저자
- Stanford University.
- 기본자료저록
- Dissertations Abstracts International. 86-02B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520250211151142
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■007cr#unu||||||||
■020 ▼a9798383706251
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■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a621
■1001 ▼aLevy, Akash.
■24510▼aMulti-Pole Nem Relays and Multiple-Bits-Per-Cell Rram for Efficient 3-D ICS
■260 ▼a[Sl]▼bStanford University▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a180 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-02, Section: B.
■500 ▼aAdvisor: Raina, Priyanka.
■5021 ▼aThesis (Ph.D.)--Stanford University, 2024.
■520 ▼aIn this dissertation, I present techniques for improving the power, performance, and area of integrated circuits (ICs) through 3-D integration of two emerging nanotechnologies: (1) resistive random-access memory (RRAM), a non-volatile memory with multiple-bits-per-cell storage capability, and (2) nanoelectromechanical (NEM) relays, nano-scale mechanical relays that can be actuated electrostatically. In modern ICs for edge computing, data movement between on and off-chip memories typically consumes a large fraction of the total power. Dense, non-volatile embedded memory can reduce/eliminate off-chip data movement by keeping frequently-read application data always on chip. RRAM is a good candidate for such a memory, especially because it can store multiple bits per cell, achieving high density on-chip storage. However, efficient and reliable operation with multiple-bits-per-cell RRAM has been a challenge due to (1) stochastic device behavior during programming that results in large pulse counts with traditional write-verify methods, and (2) reliability issues arising from resistance relaxation. Towards the goal of achieving efficient and reliable multiple-bits-per-cell RRAM, I present three contributions: (1) range-dependent adaptive resistance (RADAR) tuning, a fast and energy-efficient programming method for multiple-bits-per-cell RRAM that uses an adaptive combination of coarse- and fine-grained cell resistance tuning, yielding a 2.4x reduction in pulse count over prior methods, (2) characterization of resistance relaxation behavior in three RRAM technologies and analysis of its implications for multiple-bits-per-cell storage, and (3) efficient multiple-bits-per-cell embedded RRAM (EMBER), the first demonstration of a fully-integrated multiple-bits-per-cell RRAM macro. EMBER contains a multiple-bits-per-cell read and write controller with a high degree of flexibility that enables good level allocation (mitigating reliability issues from resistance relaxation) and programming scheme optimization (yielding low-energy, low-latency multiple-bits-per-cell writes). Finally, in reconfigurable ICs, in addition to the memories, the routing fabric consumes a large fraction of the overall area and power. I demonstrate that replacing CMOS routing switches with 3-D integrated multi-pole nanoelectromechanical (NEM) relays in a coarse-grained reconfigurable array (CGRA) can achieve 19% lower area and 10% lower power at iso-performance.
■590 ▼aSchool code: 0212.
■650 4▼aEnergy
■650 4▼aBandwidths
■690 ▼a0791
■71020▼aStanford University.
■7730 ▼tDissertations Abstracts International▼g86-02B.
■790 ▼a0212
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17160960▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


