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Publication . Preprint . Article . 2022

Stateful Logic Using Phase Change Memory

Barak Hoffer; Nicolas Wainstein; Christopher M. Neumann; Eric Pop; Eilam Yalon; Shahar Kvatinsky;
Open Access
Published: 29 Dec 2022 Journal: IEEE Journal on Exploratory Solid-State Computational Devices and Circuits, volume 8, pages 77-83 (eissn: 2329-9231, Copyright policy )
Publisher: Institute of Electrical and Electronics Engineers (IEEE)

Stateful logic is a digital processing-in-memory technique that could address von Neumann memory bottleneck challenges while maintaining backward compatibility with standard von Neumann architectures. In stateful logic, memory cells are used to perform the logic operations without reading or moving any data outside the memory array. Stateful logic has been previously demonstrated using several resistive memory types, mostly by resistive RAM (RRAM). Here we present a new method to design stateful logic using a different resistive memory - phase change memory (PCM). We propose and experimentally demonstrate four logic gate types (NOR, IMPLY, OR, NIMP) using commonly used PCM materials. Our stateful logic circuits are different than previously proposed circuits due to the different switching mechanism and functionality of PCM compared to RRAM. Since the proposed stateful logic form a functionally complete set, these gates enable sequential execution of any logic function within the memory, paving the way to PCM-based digital processing-in-memory systems.


Electrical and Electronic Engineering, Hardware and Architecture, Electronic, Optical and Magnetic Materials, Computer Science - Emerging Technologies, Emerging Technologies (cs.ET), FOS: Computer and information sciences

Funded by
EC| Real-PIM-System
Memristive In-Memory Processing System
  • Funder: European Commission (EC)
  • Project Code: 757259
  • Funding stream: H2020 | ERC | ERC-STG