{"title":"A comparison study of time-dependent dielectric breakdown for analog and digital circuit's optimal accelerated test regions","authors":"Kexin Yang, Taizhi Liu, Rui Zhang, L. Milor","doi":"10.1109/DCIS.2017.8311628","DOIUrl":"https://doi.org/10.1109/DCIS.2017.8311628","url":null,"abstract":"This paper investigates not only the traditional reliability concern, frontend-of-line dielectric breakdown (GTDDB), but also the newly emerging wearout mechanism, Middle-of-Line (MOL) time dependent dielectric breakdown (MTDDB). The optimal accelerated test conditions for these mechanisms are presented, which involves separate test conditions for each mechanism. To perform circuit-level accelerated life test, the optimal conditions vary for analog and digital circuits and need to be carefully considered before conducting the tests. Only tests in the optimal region are able to reflect the lifetime of the target wearout mechanism. Circuit designers will benefit due to the fact that different test conditions detect different wearout mechanisms. Therefore, the accelerated tests will provide information on the causes of failure, and circuit designers can use this information to redesign their circuits in a more robust and reliable way.","PeriodicalId":136788,"journal":{"name":"2017 32nd Conference on Design of Circuits and Integrated Systems (DCIS)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114657059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A 0.2V-to-5V fully-integrated reconfigurable buck/boost switched-capacitor voltage regulator for self-powered wireless sensors","authors":"Kang Wei, D. Ma","doi":"10.1109/DCIS.2017.8311640","DOIUrl":"https://doi.org/10.1109/DCIS.2017.8311640","url":null,"abstract":"This paper presents a wide-input, fully-integrated switched-capacitor voltage regulator with multiple conversion ratios (CRs) for self-powered wireless sensors. To reduce design complexity, the paper proposes to design a standard unit cell as the fundamental element to construct step-down or step-up voltage conversions flexibly. Detailed power loss breakdown of the unit cell assists to optimize power devices for high efficiency. Employing only 3 unit cells, a prototype design achieves 11 step-down and 10 step-up voltage conversions for an input voltage range from 0.2V to 5V. A simple single-bound hysteretic control is employed to regulate the output voltage at 1.2V. The proposed switched-capacitor voltage regulator supports the maximum load current of 10mA and achieves a peak efficiency of 80.5%.","PeriodicalId":136788,"journal":{"name":"2017 32nd Conference on Design of Circuits and Integrated Systems (DCIS)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126474289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. Doménech-Asensi, R. Ruiz-Merino, J. Zapata, J. López-Alcantud, J. Díaz-Madrid
{"title":"FPGA synthesis of an stereo image matching architecture for autonomous mobile robots","authors":"G. Doménech-Asensi, R. Ruiz-Merino, J. Zapata, J. López-Alcantud, J. Díaz-Madrid","doi":"10.1109/DCIS.2017.8311639","DOIUrl":"https://doi.org/10.1109/DCIS.2017.8311639","url":null,"abstract":"This paper describes a hardware proposal to speed up the process of image matching in stereo vision systems like those employed by autonomous mobile robots. This proposal combines a classical window-based matching approach with a previous stage, where key points are selected from each image of the stereo pair. In this first step the key point extraction method is based on the SIFT algorithm. Thus, in the second step, the window-based matching is only applied to the set of selected key points, instead of to the whole images. For images with a 1 % of key points, this method speeds up the matching four orders of magnitude. This proposal is, on the one hand, a better parallelizable architecture than the original SIFT, and on the other, a faster technique than a full image windows matching approach. The architecture has been implemented on a lower power Virtex 6 FPGA and it achieves a image matching speed above 30 fps.","PeriodicalId":136788,"journal":{"name":"2017 32nd Conference on Design of Circuits and Integrated Systems (DCIS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129120553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Body bias generators for ultra low voltage circuits in FDSOI technology","authors":"Diego Justo, David Cavalheiro, F. Moll","doi":"10.1109/DCIS.2017.8311638","DOIUrl":"https://doi.org/10.1109/DCIS.2017.8311638","url":null,"abstract":"Electronic circuits powered at ultra low voltages (300 mV and below) are desirable for their low energy and power consumption. However, the performance at such low power voltage is severely degraded. FDSOI technology, with its large range of body bias voltages can counteract the performance loss by applying forward body bias to the circuit. Charge pump circuits can be used to generate positive and negative body bias voltages integrated on the chip. This paper studies the main challenges in the design of such circuits operating at 300 mV to reach body bias voltages of more than +1/-1 V.","PeriodicalId":136788,"journal":{"name":"2017 32nd Conference on Design of Circuits and Integrated Systems (DCIS)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114070463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Design and validation of a platform for electromagnetic fault injection","authors":"J. Balasch, D. Arumí, S. Manich","doi":"10.1109/DCIS.2017.8311630","DOIUrl":"https://doi.org/10.1109/DCIS.2017.8311630","url":null,"abstract":"Security is acknowledged as one of the main challenges in the design and deployment of embedded circuits. Devices need to operate on-the-field safely and correctly, even when at physical reach of potential adversaries. One of the most powerful techniques to compromise the correct functioning of a device are fault injection attacks. They enable an active adversary to trigger errors on a circuit in order to bypass security features or to gain knowledge of security-sensitive information. There are several methods to induce such errors. In this work we focus on the injection of faults through the electromagnetic (EM) channel. In particular, we document our efforts towards building a suitable platform for EM pulse injection. We design a pulse injection circuit that can provide currents over 20 A to an EM injector in order to generate abrupt variations of the EM field on the vicinity of a circuit. We validate the suitability of our platform by applying a well-know attack on an embedded 8-bit microcontroller implementing the AES block cipher. In particular, we show how to extract the AES secret cryptographic keys stored in the device by careful injection of faults during the encryption operations and simple analysis of the erroneous outputs.","PeriodicalId":136788,"journal":{"name":"2017 32nd Conference on Design of Circuits and Integrated Systems (DCIS)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131585476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Detectability of structural defects using octree encoding","authors":"Álvaro Gómez-Pau, L. Balado, J. Figueras","doi":"10.1109/DCIS.2017.8311625","DOIUrl":"https://doi.org/10.1109/DCIS.2017.8311625","url":null,"abstract":"Testing of analogue and M-S circuits using octree encoding in alternate measurements space has been shown effective to detect parametric failures. In this paper, the analysis of the viability to use octree encoding to detect catastrophic faults has been explored. In addition to the classical short and open defects, the class of controlling open faults causing unpredictable behaviour have been considered. In this category, fall some opens causing floating gate defects where the high impedance node gets a voltage imposed by the capacitive coupling of surrounding lines and possible leakage currents to the floating node. The method has been applied to a Biquad filter where a wide class of catastrophic defects (shorts, path opens and floating opens) have been injected. Parametric and catastrophic failures were detected using the same alternate test procedure achieving significant savings in test application time. The results show that with a simple octree based on two indirect measures detectability was guaranteed forall shorts, and path opens. A significant number of floating gate opens is also detectable. The floating gate defects escaping assured detection would be those in which the floating gate during test excitation produces voltages at the open gate(s) similar to the voltage of the non-defective circuit.","PeriodicalId":136788,"journal":{"name":"2017 32nd Conference on Design of Circuits and Integrated Systems (DCIS)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117151704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Cantoro, E. Cetrulo, E. Sanchez, M. Reorda, A. Voza
{"title":"Automated test program reordering for efficient SBST","authors":"R. Cantoro, E. Cetrulo, E. Sanchez, M. Reorda, A. Voza","doi":"10.1109/DCIS.2017.8311634","DOIUrl":"https://doi.org/10.1109/DCIS.2017.8311634","url":null,"abstract":"Software-based Self-test (SBST) is one of the techniques adopted to detect latent faults in safety-critical applications, thus aiming at preventing them from producing failures. When adopted for in-field test, not only the achieved fault coverage, but also the test duration of SBST test programs become critical parameters. Sometimes, these test programs are created following guidelines allowing to guarantee a given Fault Coverage with reduced test duration. In other cases, existing test programs are re-used. Hence, it is important to devise automatic techniques able to modify them in such a way that the fault coverage is kept unchanged (or increased) while the test duration is reduced. This paper presents a possible approach in this direction. Its effectiveness is evaluated on some test programs targeting the openMSP430 processor. Experimental results show that the proposed method is able not only to significantly reduce the test duration (up to 26%), but also to further increase the achieved Fault Coverage, while keeping the required computational time acceptable.","PeriodicalId":136788,"journal":{"name":"2017 32nd Conference on Design of Circuits and Integrated Systems (DCIS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131199941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
David del Río, Iñaki Gurutzeaga, H. Solar, A. Beriain, Ainhoa Rezola, I. Vélez, R. Berenguer
{"title":"Variable-length transmission lines for self-healing systems and reconfigurable millimeter-wave integrated circuits","authors":"David del Río, Iñaki Gurutzeaga, H. Solar, A. Beriain, Ainhoa Rezola, I. Vélez, R. Berenguer","doi":"10.1109/DCIS.2017.8311641","DOIUrl":"https://doi.org/10.1109/DCIS.2017.8311641","url":null,"abstract":"This paper presents the design of a variable-length transmission line for millimeter-wave integrated circuits, giving design considerations and comparing different approaches. The implemented line consists of a stub that is connected to ground using 7 different switches, which can be used to change the electrical length of the line. Measurement results show that the equivalent inductance of the line can be tuned between 74.8 and 110 pH, which corresponds to 47% variation. In terms of electrical length, it can be tuned between 20.73° and 29.15°. The presented variable-length transmission line can be used in self-healing systems and reconfigurable devices, as well as to implement adjustable matching networks in load-pull measurement circuits.","PeriodicalId":136788,"journal":{"name":"2017 32nd Conference on Design of Circuits and Integrated Systems (DCIS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130414122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Ahyoune, J. Sieiro, M. N. Vidal, J. López-Villegas
{"title":"Skin effect formula for metal strips in laminated substrates","authors":"S. Ahyoune, J. Sieiro, M. N. Vidal, J. López-Villegas","doi":"10.1109/DCIS.2017.8311642","DOIUrl":"https://doi.org/10.1109/DCIS.2017.8311642","url":null,"abstract":"In this work, a simple closed formula that predicts the value of the sheet resistance of metal strips due to the skin effect is proposed. The expression is derived through the study of the current density distribution in the strip cross-section using an electromagnetic simulator. With the proposed formula, it is also shown that the number of mesh cells required in the electromagnetic analysis of planar devices can be reduced effectively.","PeriodicalId":136788,"journal":{"name":"2017 32nd Conference on Design of Circuits and Integrated Systems (DCIS)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115999999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abián Hernández, H. Fabelo, S. Ortega, Abelardo Báez, G. Callicó, R. Sarmiento
{"title":"Random forest training stage acceleration using graphics processing units","authors":"Abián Hernández, H. Fabelo, S. Ortega, Abelardo Báez, G. Callicó, R. Sarmiento","doi":"10.1109/DCIS.2017.8311636","DOIUrl":"https://doi.org/10.1109/DCIS.2017.8311636","url":null,"abstract":"Graphics Processing Units (GPUs) are platforms very appropriated to accelerate processes with high computational load, like the supervised classification of hyperspectral images. The supervised classifier Random Forest has proved to be a good candidate to classify hyperspectral images and currently constitutes an emerging technology for medical diagnosis. The objective of this paper is focused in the Random Forest training phase acceleration using GPUs, starting from an efficient CPU implementation. For some applications, it is necessary to refine the classification model depending on the new acquired samples. In this paper are presented solutions for two bottlenecks identified in the training stage in order to accelerate the algorithm. The different solutions for the bottlenecks provided in this research study have demonstrated that GPU implementation is a promising technique to generate models in shorter time. With this implementation it is possible to achieve the training process in real-time.","PeriodicalId":136788,"journal":{"name":"2017 32nd Conference on Design of Circuits and Integrated Systems (DCIS)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128343594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}