{"id":233156,"date":"2015-05-20T22:00:00","date_gmt":"2015-05-20T22:00:00","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/des-microcontroleurs-32-bits-eco-energetiques\/"},"modified":"2015-05-20T22:00:00","modified_gmt":"2015-05-20T22:00:00","slug":"des-microcontroleurs-32-bits-eco-energetiques","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/des-microcontroleurs-32-bits-eco-energetiques\/","title":{"rendered":"Des microcontr\u00f4leurs 32 bits \u00e9co-\u00e9nerg\u00e9tiques"},"content":{"rendered":"<p>Utilisant le c&oelig;ur ARM Cortex-M0+ avec des p&eacute;riph&eacute;riques de basse consommation, ces MCU simplifient la connectivit&eacute; USB dans une large palette d&rsquo;applications IoT, comme les compteurs intelligents, la domotique et l&rsquo;automatisation de b&acirc;timent, les alarmes et syst&egrave;mes de s&eacute;curit&eacute;, les accessoires connect&eacute;s et l&rsquo;&eacute;lectronique vestimentaire.<br \/>\nCes circuits impl&eacute;mentent une gestion d&rsquo;alimentation avanc&eacute;e &agrave; cinq modes d&rsquo;&eacute;nergie, afin de maintenir les applications dans un &eacute;tat optimal du point de vue consommation, en passant le moins de temps possible en mode actif. En mode sommeil profond, ils affichent un courant de veille aussi bas que 0,9 &mu;A, en gardant actifs l&rsquo;horloge temps r&eacute;el de 32,768 kHz, la r&eacute;tention d&rsquo;&eacute;tat de RAM\/CPU, le d&eacute;tecteur de sous-tension (brown-out) et la r&eacute;initialisation &agrave; l&rsquo;allumage. En mode actif, durant l&rsquo;ex&eacute;cution de code grandeur r&eacute;elle (algorithme des nombres premiers), la consommation n&rsquo;est que de 130 &micro;A\/MHz &agrave; 24 MHz. Le temps de r&eacute;veil de seulement 2 &micro;s contribue &agrave; r&eacute;duire encore la consommation.<br \/>\nComme toute la gamme des EFM32, ces MCU incluent le m&eacute;canisme PRS (Peripheral Reflex System) qui am&eacute;liore significativement l&rsquo;efficacit&eacute; &eacute;nerg&eacute;tique globale. Dot&eacute; de six canaux, le PRS surveille des &eacute;v&eacute;nements complexes de niveau syst&egrave;me et permet &agrave; diff&eacute;rents p&eacute;riph&eacute;riques du MCU de communiquer entre eux en mode autonome, sans intervention du CPU. Le PRS attend l&rsquo;arriv&eacute;e d&rsquo;&eacute;v&eacute;nements sp&eacute;cifiques avant de r&eacute;veiller le CPU, ce qui maintient le c&oelig;ur Cortex-M0+ aussi longtemps que possible dans un mode veille &eacute;conome, r&eacute;duit la consommation syst&egrave;me et allonge la vie de la batterie.<br \/>\nDe plus, ces microcontr&ocirc;leurs comportent un grand nombre des p&eacute;riph&eacute;riques analogiques de pr&eacute;cision pr&eacute;sents dans les autres membres de la gamme. Ces p&eacute;riph&eacute;riques de basse consommation incluent un comparateur analogique, un comparateur d&rsquo;alimentation, un capteur de temp&eacute;rature, un convertisseur N\/A de courant (IDAC) programmable, et un convertisseur A\/N 12 bits consommant 350 &mu;A &agrave; la fr&eacute;quence d&rsquo;&eacute;chantillonnage de 1 MHz. Un bloc mat&eacute;riel de chiffrage AES permet de d&eacute;ployer une connectivit&eacute; sans fil s&eacute;curis&eacute;e dans des applications IoT telles que les compteurs intelligents et les r&eacute;seaux de capteurs sans fil.\n<\/p>\n<hr \/>\n<p>Gr&acirc;ce &agrave; l&rsquo;int&eacute;gration exceptionnelle de cette famille mono puce, les d&eacute;veloppeurs peuvent r&eacute;duire le nombre des composants et le co&ucirc;t de nomenclature (BOM). En effet, ces MCU haute int&eacute;gration &eacute;liminent presque tous ces composants discrets externes en utilisant une architecture sans cristal et en int&eacute;grant une couche PHY USB full-speed, un r&eacute;gulateur et des r&eacute;sistances.<br \/>\nPour leur conditionnement, ces composants sont propos&eacute;s, au choix, en QFN-24 et 32, QFP-48 et en CSP de 3 x 2,9 mm, des bo&icirc;tiers assez petits pour &ecirc;tre utilis&eacute;s dans les connecteurs USB et les produits ultra minces d&rsquo;&eacute;lectronique vestimentaire.<br \/>\n&quot;Les MCU Happy Gecko apportent les avantages de notre architecture &eacute;co-&eacute;nerg&eacute;tique EFM32 aux d&eacute;veloppeurs d&rsquo;applications IoT aliment&eacute;es par batteries qui cherchent une solution de connectivit&eacute; USB &eacute;conomique et plug-and-play,&quot; d&eacute;clare Daniel Cooley, VP et directeur g&eacute;n&eacute;ral MCU et produits sans fil de Silicon Labs. &quot;La combinaison de ces MCU USB et de notre environnement de d&eacute;veloppement Simplicity Studio leur permet de connecter leurs applications 32 bits &agrave; pratiquement tout &eacute;quipement, en minimisant la consommation et le co&ucirc;t de BOM.&quot; <\/p>\n<p><strong> <\/strong><\/p>\n<p><a title=\"www.silabs.com\/Happy-Gecko\" href=\"http:\/\/www.silabs.com\/Happy-Gecko\" target=\"_blank\" rel=\"noopener\">www.silabs.com\/Happy-Gecko<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Compl\u00e9tant sa gamme des microcontr\u00f4leurs 32 bits prim\u00e9s EFM32, Silicon Labs lance les Happy Gecko, des MCU \u00e0 interface USB parmi les plus \u00e9co-\u00e9nerg\u00e9tiques du march\u00e9. Ils sont con\u00e7us pour supporter une connexion USB en drainant un courant extr\u00eamement faible, ce qui allonge la dur\u00e9e de vie des batteries et rend possible l\u2019alimentation par r\u00e9cup\u00e9ration d\u2019\u00e9nergie.<\/p>\n","protected":false},"author":22,"featured_media":233157,"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-233156","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Des microcontr\u00f4leurs 32 bits \u00e9co-\u00e9nerg\u00e9tiques ...<\/title>\n<meta name=\"description\" content=\"Compl\u00e9tant sa gamme des microcontr\u00f4leurs 32 bits prim\u00e9s EFM32, Silicon Labs lance les Happy Gecko, des MCU \u00e0 interface USB parmi les plus...\" \/>\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\/233156\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Des microcontr\u00f4leurs 32 bits \u00e9co-\u00e9nerg\u00e9tiques\" \/>\n<meta property=\"og:description\" content=\"Compl\u00e9tant sa gamme des microcontr\u00f4leurs 32 bits prim\u00e9s EFM32, Silicon Labs lance les Happy Gecko, des MCU \u00e0 interface USB parmi les plus \u00e9co-\u00e9nerg\u00e9tiques du march\u00e9. Ils sont con\u00e7us pour supporter une connexion USB en drainant un courant extr\u00eamement faible, ce qui allonge la dur\u00e9e de vie des batteries et rend possible l\u2019alimentation par r\u00e9cup\u00e9ration d\u2019\u00e9nergie.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/233156\/\" \/>\n<meta property=\"og:site_name\" content=\"EENewsEurope\" \/>\n<meta property=\"article:published_time\" content=\"2015-05-20T22:00:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ecinews.fr\/wp-content\/uploads\/import\/default\/files\/import\/eci7260_slab0264_lo-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1849\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"eeNews Europe\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written 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