{"id":220264,"date":"2016-03-03T23:02:00","date_gmt":"2016-03-03T23:02:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/microcontroleurs-pour-loptimisation-des-applications-iot\/"},"modified":"2016-03-03T23:02:00","modified_gmt":"2016-03-03T23:02:00","slug":"microcontroleurs-pour-loptimisation-des-applications-iot","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/microcontroleurs-pour-loptimisation-des-applications-iot\/","title":{"rendered":"Microcontr\u00f4leurs pour l&rsquo;optimisation des applications IoT"},"content":{"rendered":"<p>Avec une consommation de courant inf&eacute;rieure &agrave; 38 &micro;A\/MHz en mode actif et &agrave; 750 nA en mode veille, ces microcontr&ocirc;leurs prolongent la dur&eacute;e d&rsquo;utilisation du syst&egrave;me entre le remplacement ou la recharge de la batterie, offrant ainsi une meilleure exp&eacute;rience pour l&rsquo;utilisateur et de plus faibles co&ucirc;ts d&rsquo;entretien. Cette faible consommation donne &eacute;galement aux fabricants d&rsquo;appareils la possibilit&eacute; de r&eacute;duire les co&ucirc;ts en diminuant le nombre et la taille des batteries utilis&eacute;es, tout en cr&eacute;ant de nouvelles applications o&ugrave; le remplacement de la batterie s&rsquo;av&egrave;re difficile. <\/p>\n<\/p>\n<p>Contrairement &agrave; la plupart des solutions actuelles du march&eacute; qui, dans de nombreux cas, atteignent des niveaux de rendement &eacute;lev&eacute;s au d&eacute;triment de fonctionnalit&eacute;s cl&eacute;s, ces MCU embarquent une panoplie compl&egrave;te de fonctions optimisant la fiabilit&eacute; et la s&eacute;curit&eacute;. V&eacute;ritable cerveau des solutions connect&eacute;es, ils permettent une intelligence d&eacute;cisionnelle au plus pr&egrave;s des capteurs. Ils viennent enrichir le large portefeuille de technologies de communications sans fil et de mesures, et sont pris en charge par des outils de d&eacute;veloppement logiciel et mat&eacute;riel qui aident les int&eacute;grateurs &agrave; optimiser les solutions en fonction de leurs besoins applicatifs.<\/p>\n<\/p>\n<p>Premiers &eacute;l&eacute;ments de la s&eacute;rie, les mod&egrave;les ADuCM3027 et ADuCM3029 se diff&eacute;rencient uniquement par la taille de leur m&eacute;moire flash, respectivement de 128 ko et 256 ko, les deux dot&eacute;es d&rsquo;un code de correction d&rsquo;erreurs (ECC). Ils disposent &eacute;galement de 64 ko de m&eacute;moire SRAM avec parit&eacute; et, en option, d&rsquo;un cache de 4 ko pour abaisser la consommation active.\n<\/p>\n<hr \/>\n<p>Le processeur 32 bits ARM Cortex-M3 &agrave; 26 MHz avec MPU peut &ecirc;tre facilement configur&eacute; pour atteindre le bon compromis entre performances et consommation, tout en offrant le niveau de s&eacute;curit&eacute; et de fiabilit&eacute; requis. L&rsquo;acc&eacute;l&eacute;ration des op&eacute;rations de chiffrement, rendue possible par la combinaison de m&eacute;canismes de protection mat&eacute;riels et logiciels, assure une protection en lecture qui interdit l&rsquo;acc&egrave;s aux informations contenues dans l&rsquo;appareil par des utilisateurs non autoris&eacute;s. De plus, la fonction int&eacute;gr&eacute;e de protection en &eacute;criture emp&ecirc;che de reprogrammer l&rsquo;appareil avec un code non autoris&eacute;. Les fonctions de surveillance de la tension en mode veille et de correction d&rsquo;erreur au niveau de la m&eacute;moire flash augmentent la fiabilit&eacute; en &eacute;vitant toute corruption susceptible d&rsquo;entra&icirc;ner des dysfonctionnements op&eacute;rationnels ou l&rsquo;arr&ecirc;t du syst&egrave;me. Un marquage automatique assure la synchronisation des capteurs avec une horloge temps r&eacute;el. <\/p>\n<\/p>\n<p>Ces deux microcontr&ocirc;leurs sont propos&eacute;s en bo&icirc;tiers LFCSP 64 ou WLCSP 54 et fonctionnent dans la gamme de temp&eacute;rature de -40 &deg;C &agrave; +85 &deg;C sous une tension d&rsquo;alimentation unique de 1.8 V to 3.6 V. Ils sont accompagn&eacute;s de la carte d&rsquo;&eacute;valuation ADuCM3029 EZ-KIT pour faciliter les d&eacute;veloppements.<\/p>\n<\/p>\n<p><a target=\"_blank\" href=\"http:\/\/www.analog.com\/ADuCM3029.html\" title=\"www.analog.com\/ADuCM3029\" rel=\"noopener\">www.analog.com\/ADuCM3029<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pour augmente l\u2019autonomie de la batterie des applications Internet des objets (IoT), Analog Devices vient de lancer la s\u00e9rie de microcontr\u00f4leurs ultra-basse consommation ADuCM302x, r\u00e9duisant ainsi les co\u00fbts de fonctionnement de ces applications, sans sacrifier la s\u00e9curit\u00e9 et la fiabilit\u00e9.<\/p>\n","protected":false},"author":22,"featured_media":220265,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[],"domains":[47],"ppma_author":[1149],"class_list":["post-220264","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Microcontr\u00f4leurs pour l&#039;optimisation des applications IoT ...<\/title>\n<meta name=\"description\" content=\"Pour augmente l\u2019autonomie de la batterie des applications Internet des objets (IoT), Analog Devices vient de lancer la s\u00e9rie de microcontr\u00f4leurs...\" \/>\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\/220264\/\" \/>\n<meta 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