A multiply-add engine with monolithically integrated 3D memristor crossbar/CMOS hybrid circuit.
A multiply-add engine with monolithically integrated 3D memristor crossbar/CMOS hybrid circuit.
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DOI：
10.1038/srep42429
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发表时间：
2017-02-14
影响因子：
4.6
通讯作者：
Strukov DB
中科院分区：
文献类型：
--
作者：
Chakrabarti B;Lastras-Montaño MA;Adam G;Prezioso M;Hoskins B;Payvand M;Madhavan A;Ghofrani A;Theogarajan L;Cheng KT;Strukov DB
基于硅 (Si) 的互补金属氧化物半导体 (CMOS) 技术一直是信息技术革命的驱动力。然而，按照摩尔定律，CMOS 技术的微缩已经遇到了严重的瓶颈。在新兴技术中，忆阻器件对于内存和计算应用都有着广阔的前景。具有 CMOL（CMOS + “分子”）架构的混合 CMOS/忆阻器电路已被提出，将忆阻器件的极高密度与 CMOS 技术的稳健性相结合，从而实现太比特级存储器和极其高效的计算范式。在这项工作中，我们演示了一种混合 3D CMOL 电路，该电路具有单片集成在预制 CMOS 基板上的 2 层忆阻交叉开关。集成交叉开关可以通过底层 CMOS 电路完全运行。两层中的忆阻器件都表现出具有受控可调性和稳定的多级操作的模拟开关行为。我们使用 2D 和 3D 忆阻交叉开关执行点积运算，以证明此类 3D CMOL 混合电路作为乘加引擎的适用性。据我们所知，这是功能性 3D CMOL 混合电路的首次演示。
Silicon (Si) based complementary metal-oxide semiconductor (CMOS) technology has been the driving force of the information-technology revolution. However, scaling of CMOS technology as per Moore’s law has reached a serious bottleneck. Among the emerging technologies memristive devices can be promising for both memory as well as computing applications. Hybrid CMOS/memristor circuits with CMOL (CMOS + “Molecular”) architecture have been proposed to combine the extremely high density of the memristive devices with the robustness of CMOS technology, leading to terabit-scale memory and extremely efficient computing paradigm. In this work, we demonstrate a hybrid 3D CMOL circuit with 2 layers of memristive crossbars monolithically integrated on a pre-fabricated CMOS substrate. The integrated crossbars can be fully operated through the underlying CMOS circuitry. The memristive devices in both layers exhibit analog switching behavior with controlled tunability and stable multi-level operation. We perform dot-product operations with the 2D and 3D memristive crossbars to demonstrate the applicability of such 3D CMOL hybrid circuits as a multiply-add engine. To the best of our knowledge this is the first demonstration of a functional 3D CMOL hybrid circuit.