{"id":178359,"date":"2017-03-27T07:00:00","date_gmt":"2017-03-27T07:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/microcontroleur-ultra-basse-consommation-pour-applications-iot\/"},"modified":"2017-03-27T07:00:00","modified_gmt":"2017-03-27T07:00:00","slug":"microcontroleur-ultra-basse-consommation-pour-applications-iot","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/microcontroleur-ultra-basse-consommation-pour-applications-iot\/","title":{"rendered":"Microcontr\u00f4leur ultra-basse consommation pour applications IoT"},"content":{"rendered":"<p>Architectur\u00e9 autour d\u2019un c\u0153ur ARM Cortex-M4 avec unit\u00e9 en virgule flottante, ce microcontr\u00f4leur int\u00e8gre une m\u00e9moire SRAM \u00e9tendue et une m\u00e9moire flash pour permettre une prise de d\u00e9cision localis\u00e9e et faire en sorte que seules les donn\u00e9es les plus importantes soient transmises vers le cloud. Gr\u00e2ce \u00e0 la technologie SensorStrobe, il peut rester en mode basse consommation lorsque les capteurs et la technologie RF propri\u00e9taires proc\u00e8dent \u00e0 la collecte des donn\u00e9es. Il peut ainsi multiplier par plus de 10 les \u00e9conomies d\u2019\u00e9nergie au niveau syst\u00e8me, avec pour corollaire une dur\u00e9e de vie prolong\u00e9e pour la batterie ou un d\u00e9lai \u00e9tendu entre deux recharges. Des am\u00e9liorations-cl\u00e9s ont \u00e9t\u00e9 ajout\u00e9es en vue de permettre son utilisation dans les environnements les plus s\u00e9v\u00e8res.<\/p>\n<p>En outre, ce circuit contribue \u00e0 am\u00e9liorer la s\u00e9curit\u00e9 gr\u00e2ce \u00e0 ses fonctions de cryptage qui donnent au concepteur la possibilit\u00e9 de renforcer la protection IP et augmentent la protection contre les logiciels malveillants et les utilisations abusives. Parmi ces protections, citons les cl\u00e9s AES&nbsp;128\/256, l\u2019algorithme de hachage SHA&nbsp;256, le chiffrement par blocs pour la protection de code, l\u2019algorithme d\u2019enveloppe par cl\u00e9s (key wrap) et le hachage de cl\u00e9s pour l\u2019authentification de messages (HMAC). Cette nouvelle r\u00e9f\u00e9rence ultra-basse consommation compl\u00e8te l\u2019actuelle gamme de microcontr\u00f4leurs ADuCM302x d\u2019Analog Devices et offre une totale compatibilit\u00e9 au niveau du brochage.<\/p>\n<p>Ce microcontr\u00f4leur accepte un large \u00e9ventail d\u2019informations transmises par des capteurs num\u00e9riques et analogiques gr\u00e2ce \u00e0 la technologie SensorStrobe qui permet de les combiner et de les analyser en vue d\u2019obtenir des fonctionnalit\u00e9s sophistiqu\u00e9es et plus intelligentes. Par cons\u00e9quent, il n\u2019est pas n\u00e9cessaire de le \u00abr\u00e9veiller\u00bb fr\u00e9quemment pour signaler des donn\u00e9es de routine ou partielles, ce qui g\u00e9n\u00e8re des \u00e9conomies d\u2019\u00e9nergie significatives sur le long terme. Ainsi, ses tr\u00e8s faibles besoins en \u00e9nergie se traduisent par une consommation de 40&nbsp;\u03bcA\/MHz en mode actif qui chute \u00e0 680&nbsp;nA en mode veille prolong\u00e9e.<\/p>\n<hr \/>\n<p>Les importantes m\u00e9moires SRAM et flash, de respectivement 128 ko et 512&nbsp;ko, et la capacit\u00e9 de conserver la quasi-totalit\u00e9 de la m\u00e9moire SRAM, font que le microcontr\u00f4leur peut pr\u00e9parer les donn\u00e9es plus rapidement d\u00e8s qu\u2019il quitte le mode hibernation (veille), ce qui repr\u00e9sente un avantage majeur sur le plan des \u00e9conomies d\u2019\u00e9nergie.<\/p>\n<p>Encapsul\u00e9 en bo\u00eetier LFCSP \u00e0 64 broches ou WLCSP \u00e0 72 contacts, ce produit est tout particuli\u00e8rement destin\u00e9 aux applications qui exigent une dur\u00e9e de vie de batterie allong\u00e9e, un haut niveau de s\u00e9curit\u00e9 et d\u2019int\u00e9grit\u00e9 des performances et une capacit\u00e9 de pr\u00e9traitement et filtrage des donn\u00e9es collect\u00e9es par les capteurs afin d\u2019\u00e9liminer les artefacts et les bruits. Parmi ses domaines applications figurent la surveillance des signes cliniques vitaux, la gestion intelligente de l\u2019\u00e9nergie et les rapports sur l\u2019\u00e9tat des actifs et des \u00e9quipements industriels.<\/p>\n<p>&nbsp;<a href=\"http:\/\/www.analog.com\/ADuCM4050\" target=\"_blank\" rel=\"noopener\">www.analog.com\/ADuCM4050<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Divisant par 10 la consommation au niveau syst\u00e8me avec fonctionnement en virgule flottante, le microcontr\u00f4leur ultra-basse consommation ADuCM4050 d\u2019Analog Devices r\u00e9pond aux besoins croissants d\u2019int\u00e9gration d\u2019algorithmes avanc\u00e9s tout en consommant le moins d\u2019\u00e9nergie possible au niveau syst\u00e8me dans les n\u0153uds d\u2019extr\u00e9mit\u00e9 de l\u2019Internet des objets (IoT).<\/p>\n","protected":false},"author":9,"featured_media":178360,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[906],"domains":[47],"ppma_author":[1141],"class_list":["post-178359","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","tag-mpus-mcus-fr","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Microcontr\u00f4leur ultra-basse consommation pour applications IoT ...<\/title>\n<meta name=\"description\" content=\"Divisant par 10 la consommation au niveau syst\u00e8me avec fonctionnement en virgule flottante, le microcontr\u00f4leur ultra-basse consommation ADuCM4050...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/178359\/\" 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