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SneakPath compensation circuit for programming and read operations in RRAM-based CrossPoint architectures

Abstract : Passive crossbar memories based on resistive switching bit-cells are today seen as the most promising candidates for flash memories replacement. However, inherent sneak currents through unselected devices lead to low operating margins and over-consumption during read and programing operations. Crossbar memory simulations with bit-cells based on two terminal nonlinear selectors, also show degraded performances due to sneak path currents, leading to nonfunctional memories. Thus, peripheral circuits have to be designed in order to mitigate the sneak currents that impact memory operations. In this paper, we propose a dynamic sneak current compensation circuit for SET and read operations, enabling multi-level cell programming. This circuit is simulated using CMOS 130nm Bulk core process with OxRAM and tunnel barrier-based selector bit-cell.
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Submitted on : Monday, July 16, 2018 - 3:58:05 PM
Last modification on : Sunday, June 20, 2021 - 9:50:01 AM
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Alexandre Levisse, Bastien Giraud, Jean-Philippe Noel, Mathieu Moreau, Jean-Michel Portal. SneakPath compensation circuit for programming and read operations in RRAM-based CrossPoint architectures. 2015 15th Non-Volatile Memory Technology Symposium (NVMTS), Oct 2015, Beijing, China. ⟨10.1109/NVMTS.2015.7457426⟩. ⟨hal-01745689⟩

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