Premio Iniciativa Mas+Cara
Mas+Cara: Soluciones de reconocimiento biométrico con privacidad y seguridad post-cuántica

El pasado 18 de mayo del 2023, la iniciativa Mas+Cara ganó el 1er Premio del XVIII Concurso de Ideas de Emprendimiento de la US a iniciativa impulsada por PDI (Personal Docente e Investigador).
23 Mayo 2023


Visita Comisionado PERTE
Visita del Comisionado del PERTE de Microelectrónica al Instituto de Microelectrónica de Sevilla (IMSE-CNM)

El comisionado especial del Proyecto Estratégico para la Recuperación y Transformación Económica de Microlectrónica y Semiconductores, más conocido por PERTE CHIP, D. Jaime Martorell, visitó el Instituto de Microelectrónica de Sevilla (IMSE-CNM), centro mixto del Consejo Superior de Investigaciones Científicas (CSIC) y la Universidad de Sevilla.
18 Mayo 2023


Primera Jornada PTI Ciencia Digital
1ª jornada PTI Ciencia Digital

La primera asamblea de la PTI Ciencia e Innovación Digital tendrá lugar el 10 de mayo del 2023 donde nos encontraremos todos los participantes de la plataforma junto con las empresas y administraciones públicas de interés en el salón de actos del Centro de Ciencias Humanas y Sociales (CCHS, CSIC) en Madrid.


Comision Europea selecciona al proyecto QUBIP
La Comisión Europea ha seleccionado al proyecto QUBIP para su financiación

La Comisión Europea ha seleccionado al proyecto QUBIP para ser financiado en la convocatoria HORIZON-CL3-2022-CS-01 del Clúster 3 del programa Horizon Europe dedicado a Seguridad Civil para la Sociedad.
29 Marzo 2023


MSCA Postdoctoral Felloships 2022 ha seleccionado al proyecto SQPRIM
El prestigioso programa de MSCA Postdoctoral Felloships 2022 ha seleccionado al proyecto SQPRIM

El prestigioso programa de MSCA Postdoctoral Felloships 2022 ha seleccionado al proyecto SQPRIM presentado por Dr. David Martín Sánchez bajo la supervisión de la Dra. Piedad Brox Jiménez.
28 Marzo 2023


Visita de Naresh Shanbhag
Presentación del Eminente prof. Naresh Shanbhag

El día 2 de Marzo del 2023 hemos tenido una presentación del Eminente prof. Naresh Shanbhag de la Univ. de Illinois Urbana-Champaign, quien está de estancia en el IMSE:
2 Marzo 2023



Nueva Directora del IMSE-CNM

La investigadora del IMSE Teresa Serrano Gotarredona ha sido nombrada nueva Directora del Instituto de Microelectrónica de Sevilla.


Formación en el IMSE

- Doctorado
- Máster
- Grados
- Trabajos Fin de Grado
- Prácticas en Empresa


Publicaciones recientes

On-Line Evaluation and Monitoring of Security Features of an RO-Based PUF/TRNG for IoT Devices
L.F. Rojas-Muñoz, S. Sánchez-Solano, M.C. Martínez-Rodríguez and P. Brox
Journal Paper · Sensors, vol. 23, no. 8, article 4070, 2023
MDPI    ISSN: 1424-8220
resumen      doi      

The proliferation of devices for the Internet of Things (IoT) and their implication in many activities of our lives have led to a considerable increase in concern about the security of these devices, posing a double challenge for designers and developers of products. On the one hand, the design of new security primitives, suitable for resource-limited devices, can facilitate the inclusion of mechanisms and protocols to ensure the integrity and privacy of the data exchanged over the Internet. On the other hand, the development of techniques and tools to evaluate the quality of the proposed solutions as a step prior to their deployment, as well as to monitor their behavior once in operation against possible changes in operating conditions arising naturally or as a consequence of a stress situation forced by an attacker. To address these challenges, this paper first describes the design of a security primitive that plays an important role as a component of a hardware-based root of trust, as it can act as a source of entropy for True Random Number Generation (TRNG) or as a Physical Unclonable Function (PUF) to facilitate the generation of identifiers linked to the device on which it is implemented. The work also illustrates different software components that allow carrying out a self-assessment strategy to characterize and validate the performance of this primitive in its dual functionality, as well as to monitor possible changes in security levels that may occur during operation as a result of device aging and variations in power supply or operating temperature. The designed PUF/TRNG is provided as a configurable IP module, which takes advantage of the internal architecture of the Xilinx Series-7 and Zynq-7000 programmable devices and incorporates an AXI4-based standard interface to facilitate its interaction with soft- and hard-core processing systems. Several test systems that contain different instances of the IP have been implemented and subjected to an exhaustive set of on-line tests to obtain the metrics that determine its quality in terms of uniqueness, reliability, and entropy characteristics. The results obtained prove that the proposed module is a suitable candidate for various security applications. As an example, an implementation that uses less than 5% of the resources of a low-cost programmable device is capable of obfuscating and recovering 512-bit cryptographic keys with virtually zero error rate.

A Pipelining-Based Heterogeneous Scheduling and Energy-Throughput Optimization Scheme for CNNs Leveraging Apache TVM
D. Velasco-Montero, B. Goossens, J. Fernández-Berni, Á. Rodríguez-Vázquez and W. Philips
Journal Paper · IEEE Access, 2023
IEEE    ISSN: 2169-3536
resumen      doi      

Extracting information of interest from continuous video streams is a strongly demanded computer vision task. For the realization of this task at the edge using the current de-facto standard approach, i.e., deep learning, it is critical to optimize key performance metrics such as throughput and energy consumption according to prescribed application requirements. This allows achieving timely decision-making while extending the battery lifetime as much as possible. In this context, we propose a method to boost neural-network performance based on a co-execution strategy that exploits hardware heterogeneity on edge platforms. The enabling tool is Apache TVM, a highly efficient machine-learning compiler compatible with a diversity of hardware back-ends. The proposed approach solves the problem of network partitioning and distributes the workloads to make concurrent use of all the processors available on the board following a pipeline scheme. We conducted experiments on various popular CNNs compiled with TVM on the Jetson TX2 platform. The experimental results based on measurements show a significant improvement in throughput with respect to a single-processor execution, ranging from 14% to 150% over all tested networks. Power-efficient configurations were also identified, accomplishing energy reductions above 10%.

Band-Pass Sigma-Delta Modulation: The Path towards RF-to-Digital Conversion in Software-Defined Radio
J.M. de la Rosa
Journal Paper · Chips, vol. 2 no. 1, articles 44-69, 2023
MDPI    ISSN: 2674-0729
resumen      doi      

This paper reviews the state of the art on bandpass sigma-delta modulators (BP-sigma-deltaMs) intended to digitize radio frequency (RF) signals. A priori, this is the most direct way to implement software-defined radio (SDR) systems since the analog/digital interface is placed closer to the antenna, thus reducing the analog circuitry and doing most of the signal processing in the digital domain. In spite of their higher programmability and scalability, RF BP-sigma-deltaM analog-to-digital converters (ADCs) require more energy to operate in the GHz range as compared with their low-pass (LP) counterparts. This makes conventional direct conversion receivers (DCRs) the commonplace approach due to their overall smaller energy consumption. This paper surveys some circuits and systems techniques which can make RF ADCs and SDR-based transceivers more efficient and feasible to be embedded in mobile terminals.

Ultra-High-Resistance Pseudo-Resistors with Small Variations in a Wide Symmetrical Input Voltage Swing
F. Karami-Horestani and J.M. de la Rosa
Journal Paper · IEEE Transactions on Circuits and Systems II: Express Briefs
IEEE    ISSN: 1549-7747
resumen      doi      

This paper presents a new strategy and circuit configuration composed of serially-connected PMOS devices operating in the subthreshold region for implementing ultra-highvalue resistors required in very low-frequency active-RC filters and bio-amplifiers. Depending on the application, signal bandwidth for instance in bio-amplifiers may vary from a few mHz up to a maximum of 10 kHz. Three different resistor structures are proposed to achieve ultra-high resistance. While ranging in the order of several TY, the proposed ultra-high-resistance pseudoresistors occupy a small on-chip silicon area, which is one of the main issues in the design of analog front-end circuits in ultra-low power implantable biomedical microsystems. In addition, these ultra-high-value resistors lead to the use of a small capacitance to create a very small cut-off frequency. Therefore, the large area to implement capacitances is also considerably reduced. The proposed resistor structures have very small variations about 7% and 12% in a wide input voltage range (-0.5 V +0.5 V), thus significantly improving the total harmonic distortion of bioamplifiers and the analog front-end of the system. Simulation results of different circuits designed in a 180nm CMOS technology, are shown to demonstrate the advantages of the proposed ultra-high-resistance pseudo-resistors.


Video institucional del IMSE

Qué hacemos en el IMSE

El área de especialización del Instituto es el diseño de circuitos integrados analógicos y de señal mixta en tecnología CMOS, así como su uso en diferentes contextos de aplicación tales como dispositivos biomédicos, comunicaciones inalámbricas, conversión de datos, sensores de visión inteligentes, ciberseguridad, computación neuromórfica y tecnología espacial.

La plantilla del IMSE-CNM está formada por unas cien personas, entre personal científico y de apoyo, que participan en el avance del conocimiento, la generación de diseños de alto nivel científico-técnico y la transferencia de tecnología.


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