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Conference of 2015 7th IEEE International Memory Workshop, IMW 2015 ; Conference Date: 17 May 2015 Through 20 May 2015; Conference Code:113230; International audience; In this work, we will focus on the role that new nonvolatile resistive memory technologies (as OxRAM and CBRAM) can play in emerging fields of application, such as neuromorphic circuits, to save energy and increase performance. We will present large-scale energy efficient neuromorphic systems based on ReRAM as stochastic-binary synapses. Prototype applications such as complex visual- and auditory-pattern extraction will be discussed using feedforward spiking neural networks. A parallel will be drawn between these systems and human memory, as recent discoveries on the human brain and cognitive processes may bring benefits and open new perspectives for intelligent data processing.

Conference of IEEE International Symposium on Circuits and Systems, ISCAS 2015 ; Conference Date: 24 May 2015 Through 27 May 2015; Conference Code:115760; International audience; In this work, we will focus on the role that new nonvolatile resistive memory technologies can play in emerging fields of application, such as non-volatile logic circuits or neuromorphic circuits, to save energy and increase performance. Concerning the introduction of non-volatile functionalities at the logic level, we will demonstrate hybrid CMOS logic plus ReRAM (specifically CBRAM and OXRAM) circuits for ultra low power FPGA and fixed-logic IC design, as Non Volatile Flip-Flops. Concerning neuromorphic circuits, we will focus on the emulation of synaptic plasticity effects with resistive memory synapses. We will present large-scale energy efficient neuromorphic systems based on ReRAM as stochastic-binary synapses. Prototype applications such as complex visual- and auditory-pattern extraction will be also discussed using feedforward spiking neural networks.

Conference of Symposium on Nonvolatile Memories 4 - 228th ECS Meeting ; Conference Date: 11 October 2015 Through 15 October 2015; Conference Code:115963; International audience; Oxide based resistive memories (OxRAMs) is one of the potential candidates for non-volatile logic circuits and neuromorphic circuits in the applications of wearable devices, internet of things (IoT), cloud computing, and big-data processing. One of the main OxRAMs issue is the noise behavior of the high resistance state (HRS). In this work, we will demonstrate a hybrid (CMOS logic plus ReRAM devices) Non Volatile Flip Flop designed to face OxRAM variability. Concerning neuromorphic circuits, we will focus on the impact of resistance variability on the performance of Convolutional Neural Network (CNN) systems for visual pattern recognition applications.

Conference of 16th Design, Automation and Test in Europe Conference and Exhibition, DATE 2013 ; Conference Date: 18 March 2013 Through 22 March 2013; Conference Code:100164; International audience; This paper presents new scan solutions with low latency overhead and on-line monitoring support. Shadow flip-flops with scan design are associated to system flip-flops in order to (a) provide concurrent delay fault detection and (b) avoid the scan chain insertion of system flip-flops. A mixed scan architecture is proposed which involves flip-flops with shadow scan design at the end of timing-critical paths and flip-flops with standard scan at non-critical locations. In order to preserve system controllability during test, system flip-flops with shadow scan can be set in scan mode and selectively reset before switching to capture mode. It is shown that shadow scan design with asynchronous set and reset may have a lower latency overhead than standard scan design. A shadow scan solution is proposed which, in addition to concurrent delay fault detection, provides simultaneous scan and capture capability.