{"id":2644,"date":"2012-04-19T12:00:44","date_gmt":"2012-04-19T03:00:44","guid":{"rendered":"http:\/\/www.nanghi.net\/?p=2644"},"modified":"2023-11-08T19:17:38","modified_gmt":"2023-11-08T10:17:38","slug":"post_1973","status":"publish","type":"post","link":"https:\/\/www.nanghi.net\/?p=2644","title":{"rendered":"I<sup>2<\/sup>C\u30c6\u30b9\u30c8\u4e2d"},"content":{"rendered":"<p>\u3000\u3044\u308d\u3044\u308d\u7d06\u4f59\u66f2\u6298\u3068\u3044\u3046\u304b\u30c8\u30e9\u30d6\u30eb\u306b\u307e\u307f\u308c\u307e\u3057\u305f\u304c\u3068\u308a\u3042\u3048\u305a\u76ee\u7684\u306f\u9054\u6210\u3002<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-13266\" src=\"https:\/\/www.nanghi.net\/wp-content\/uploads\/2012\/04\/2012041505-1.jpg\" alt=\"I2C\u901a\u4fe1\u30c6\u30b9\u30c8\" width=\"400\" height=\"300\" srcset=\"https:\/\/www.nanghi.net\/wp-content\/uploads\/2012\/04\/2012041505-1.jpg 400w, https:\/\/www.nanghi.net\/wp-content\/uploads\/2012\/04\/2012041505-1-200x150.jpg 200w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><br \/>\n\u3000<strong>I<sup>2<\/sup>C\u901a\u4fe1\u30c6\u30b9\u30c8<\/strong><br \/>\n\u3000I\/O\u30a8\u30af\u30b9\u30d1\u30f3\u30c0\u30fc\u3067\u3042\u308bMCP23008-E\/P\u306812F675-I\/P\u3092I<sup>2<\/sup>C\u901a\u4fe1\u3067\u8a2d\u5b9a\u3092\u30ec\u30b8\u30b9\u30bf\u306b\u66f8\u304d\u8fbc\u3093\u3060\u308a\u3001I\/O\u306e\u5024\u3092\u8aad\u307f\u8fbc\u3093\u3060\u308a\u3059\u308b\u57fa\u672c\u7684\u306a\u52d5\u4f5c\u306e\u30c1\u30a7\u30c3\u30af\u304c\u5b8c\u4e86\u3002<br \/>\n\u3000CCS C\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u7d44\u307f\u8fbc\u307f\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3042\u308bI<sup>2<\/sup>C\u95a2\u9023\u306e\u95a2\u6570\u3092\u4f7f\u3063\u3066\u8a18\u8ff0\u3057\u3066\u3044\u305f\u306e\u3067\u3059\u304c\u3001\u3069\u3046\u3082\u52d5\u4f5c\u304c\u304a\u304b\u3057\u3044\u72b6\u614b\u304c\u7d9a\u3044\u3066\u3044\u307e\u3057\u305f\u3002<br \/>\n\uff11\uff09\u30ec\u30b8\u30b9\u30bf\u306e\u8a2d\u5b9a\u304c\u51fa\u6765\u306a\u3044<br \/>\n\u3000MCP23008\u306e\u30ec\u30b8\u30b9\u30bf\u3078I<sup>2<\/sup>C\u3092\u7528\u3044\u3066\u8a2d\u5b9a\u3092\u66f8\u304d\u8fbc\u3080\u306e\u3067\u3059\u304c\u3001\u3069\u3046\u3082\u4e0d\u5b89\u5b9a\u3002\u6b63\u3057\u304f\u66f8\u304d\u8fbc\u3081\u308b\u3068\u304d\u3082\u3042\u308b\u3068\u8a00\u3046\u72b6\u614b\u3002\u30bd\u30fc\u30b9\u5074\u3067\u901a\u4fe1\u901f\u5ea6\u3092\u843d\u3068\u3059\u3068\u89e3\u6c7a\u3059\u308b\u3002<br \/>\n\u3000\u51fa\u529b\u6307\u5b9a\u3092\u3057\u3066\u3044\u308b\u30d4\u30f3\u304c\u8a2d\u5b9a\u3067\u304d\u3066\u3044\u306a\u3044\u306e\u306f\u3001\u5f53\u8a72\u30d4\u30f3\u304c\u30cf\u30a4\uff65\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u72b6\u614b\u306b\u306a\u3063\u3066\u3044\u308b\u305f\u3081\u78ba\u8a8d\u3067\u304d\u3066\u3044\u305f\u3002<br \/>\n\uff12\uff09I<sup>2<\/sup>C\u30d0\u30b9\u306e\u52d5\u4f5c\u3092\u78ba\u8a8d\u3059\u308b\u3068\u843d\u3061\u308b<br \/>\n\u3000\u30ed\u30b8\u30c3\u30af\u30ec\u30d9\u30eb\u3092\u8868\u793a\u3059\u308b\u30d7\u30ed\u30fc\u30d6\uff08<a href=\"\/?p=11\">PIC\u30c4\u30fc\u30eb\u30dc\u30c3\u30af\u30b9<\/a>\u306b\u7d44\u8fbc\uff09\u3092I<sup>2<\/sup>C\u306e\u901a\u4fe1\u3092\u884c\u3063\u3066\u3044\u308b\u30d4\u30f3\u306b\u5f53\u3066\u308b\u3068\u30cf\u30f3\u30b0\u30a2\u30c3\u30d7\u3057\u3066\u6b62\u307e\u3063\u3066\u3057\u307e\u3046\u3002\u305f\u3076\u3093ACK\u5f85\u3061\u3092\u3057\u3066\u3044\u308b\u3068\u601d\u308f\u308c\u307e\u3059\u3002<br \/>\n\u3000\u7c21\u6613\u30ed\u30b8\u30c3\u30af\u30c6\u30b9\u30bf\u30fc\u306b\u306f\u5fae\u5206\u56de\u8def\u3092\u7528\u3044\u3066\u3001\u7acb\u4e0b\u308a\u30a8\u30c3\u30b8\u3068\u7acb\u3061\u4e0a\u304c\u308a\u30a8\u30c3\u30b8\u306e\u305d\u308c\u305e\u308c\u3067\u70b9\u706f\u3059\u308bLED\u304c\u4ed8\u3051\u3066\u3042\u308a\u3001\u4e00\u904e\u6027\u306e\u4fe1\u53f7\u5909\u5316\u3092\u898b\u308b\u3053\u3068\u304c\u51fa\u6765\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u308b\u306e\u3067\u3059\u304c\u3001\u4e00\u56de\u77ac\u3044\u3066\u304b\u3089\u52d5\u304b\u306a\u304f\u306a\u3063\u3066\u3044\u307e\u3057\u305f\u3002<br \/>\n\u3000I<sup>2<\/sup>C\u3067\u8aad\u307f\u53d6\u308a\u3092\u3057\u3066\u300112F675\u306e\u30d4\u30f3\u306b\u51fa\u529b\u3057\u3066\u3044\u308b\u5206\u306b\u306f\u554f\u984c\u306a\u3044\u306e\u3067\u3001\u30c7\u30fc\u30bf\u3068\u30af\u30ed\u30c3\u30af\u306e\u4fe1\u53f7\u7dda\u304c\u30d0\u30bf\u3064\u3044\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u3068\u601d\u308f\u308c\u307e\u3057\u305f\u3002<br \/>\n\uff13\uff09\u9ad8\u901f\u901a\u4fe1\u304c\u3067\u304d\u306a\u3044<br \/>\n\u3000\u4f4e\u901f\u306e100kbps\u3067\u306f\u666e\u901a\u306b\u901a\u4fe1\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u304c\u3001400kbps\u306e\u9ad8\u901f\u30e2\u30fc\u30c9\u3067\u901a\u4fe1\u3059\u308b\u3068\u4e0d\u5b89\u5b9a\u3068\u3044\u3046\u304b\u6b63\u5e38\u306b\u52d5\u4f5c\u3057\u3066\u3044\u306a\u3044\u307f\u305f\u3044\u3067\u3059\u3002<br \/>\n\u3000\u52d5\u4f5c\u3059\u308b\u3088\u3046\u306b\u898b\u3048\u3066\u3044\u305f\u308a\u6b62\u3063\u3066\u3057\u307e\u3063\u305f\u308a\u3068\u304b\u306a\u308a\u4e0d\u5b89\u5b9a\u3002\u4fe1\u53f7\u7dda\u306e\u8aa4\u52d5\u4f5c\u304c\u4e88\u60f3\u3055\u308c\u307e\u3059\u304c\u30aa\u30b7\u30ed\u306e\u30d7\u30ed\u30fc\u30d6\u3092\u5f53\u3066\u3066\u3082\u72b6\u614b\u304c\u5909\u5316\u3057\u307e\u3059\u306e\u3067\u6355\u307e\u3048\u3065\u3089\u3044\u72b6\u614b\u3067\u3057\u305f\u3002<br \/>\n\u3000\u30d6\u30ec\u30c3\u30c9\u30dc\u30fc\u30c9\u3067\u30c6\u30b9\u30c8\u30d9\u30f3\u30c1\u3092\u4f5c\u3063\u3066\u3044\u308b\u72b6\u614b\u3092\u5dee\u3057\u5f15\u3044\u3066\u3082\u3042\u307e\u308a\u306b\u30bb\u30f3\u30b7\u30c6\u30a3\u30d6\u3002<br \/>\n\u3000\u3069\u3046\u3082I<sup>2<\/sup>C\u306e\u30d0\u30b9\u306e\u30d7\u30eb\u30a2\u30c3\u30d7\u62b5\u6297\u304c\u5c0f\u3055\u3044\u3088\u3046\u3067\u3059\u3002\u5f53\u521d3.3k\u03a9\u3092\u3064\u3051\u3066\u3044\u305f\u306e\u3067\u3059\u304c\u3001\u9ad8\u901f\u306a\u901a\u4fe1\u3092\u3059\u308b\u305f\u3081\u306b\u306f\u5f15\u3063\u5f35\u308a\u4e0a\u3052\u308b\u529b\u304c\u8db3\u308a\u306a\u3044\u3088\u3046\u3067\u30011.5k\u03a9\u306b\u5909\u66f4\u3059\u308b\u3068\u6b63\u5e38\u306b\u52d5\u4f5c\u3059\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<br \/>\n\u3000\u4e0b\u4f4d4bit\u3092\u5165\u529b\u306b\u3001\u4e0a\u4f4d4bit\u3092\u51fa\u529b\u306b\u3057\u3066\u5165\u529b\u3092\u305d\u306e\u307e\u307e\u51fa\u529b\u5074\u306b\u51fa\u3059\u30c6\u30b9\u30c8\u7528\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3067\u7121\u4e8b\u52d5\u4f5c\u3092\u78ba\u8a8d\u3002<br \/>\n\u3000\u3053\u308c\u3067\u3001I<sup>2<\/sup>C\u95a2\u9023\u306e\u52d5\u4f5c\u306f\u306a\u3093\u3067\u3082\u5927\u4e08\u592b\u3060\u3068\u601d\u3044\u307e\u3059\u3002<br \/>\n\u3000\u3061\u3087\u3063\u3068SPI\u3068\u306f\u7570\u306a\u308b\u90e8\u5206\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u57fa\u672c\u7684\u306a\u901a\u4fe1\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u4f3c\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u4ed6\u306e\u30c7\u30d0\u30a4\u30b9\u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3082\u30c6\u30b9\u30c8\u3057\u3066\u304a\u3053\u3046\u304b\u3068\u601d\u3044\u307e\u3059\u3002<br \/>\n\u3000\u52d5\u4f5c\u3057\u306a\u3044\u306e\u3067\u306a\u305c\u304b\u3068\u601d\u3046\u3068I\/O\u30a8\u30af\u30b9\u30d1\u30f3\u30c0\u30fc\u306e\u30ea\u30bb\u30c3\u30c8\u7aef\u5b50\u304c\u6d6e\u3044\u3066\u3044\u3066\u3001\u305a\u3063\u3068\u30ea\u30bb\u30c3\u30c8\u306e\u72b6\u614b\u306e\u307e\u307e\u3060\u3063\u305f\u308a\u3068\u3044\u3046\u30c8\u30f3\u30c7\u30e2\u30c8\u30e9\u30d6\u30eb\u3082\u3042\u308a\u307e\u3057\u305f\u304c\u3002<br \/>\n\u3000\u3068\u308a\u3042\u3048\u305a\u3001\u3053\u308c\u3067\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30a2\u30f3\u30d7\u306e\u5236\u5fa1\u56de\u8def\u304c\u7d44\u307f\u7acb\u3066\u3089\u308c\u308b\u72b6\u614b\u306b\u306a\u3063\u305f\u3068\u3044\u3048\u307e\u3059\u306e\u3067\u3001\u9806\u6b21\u9032\u3081\u3066\u884c\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<br \/>\n\u3000I<sup>2<\/sup>C\u3068SPI\u306f\u96fb\u5b50\u30dc\u30ea\u30e5\u30fc\u30e0\u3084DAC\u306a\u3069\u306e\u30c7\u30b8\u30bf\u30eb\u30aa\u30fc\u30c7\u30a3\u30aa\u306e\u30c7\u30d0\u30a4\u30b9\u3068\u306f\u5207\u3063\u3066\u3082\u5207\u308a\u96e2\u305b\u306a\u3044\u304f\u3089\u3044\u63a1\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u305d\u308c\u3089\u306e\u30c7\u30d0\u30a4\u30b9\u3092\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3059\u308b\u305f\u3081\u306b\u306f\u5fc5\u9808\u306e\u624b\u6bb5\u3067\u3059\u3002<br \/>\n\u3000\u3061\u3087\u3063\u3068\u5bc4\u308a\u9053\u3067\u96fb\u5b50\u30dc\u30ea\u30e5\u30fc\u30e0\u306e\u64cd\u4f5c\u3092\u884c\u3046\u4e88\u5b9a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3000\u3044\u308d\u3044\u308d\u7d06\u4f59\u66f2\u6298\u3068\u3044\u3046\u304b\u30c8\u30e9\u30d6\u30eb\u306b\u307e\u307f\u308c\u307e\u3057\u305f\u304c\u3068\u308a\u3042\u3048\u305a\u76ee\u7684\u306f\u9054\u6210\u3002 \u3000I2C\u901a\u4fe1\u30c6\u30b9\u30c8 \u3000I\/O\u30a8\u30af\u30b9\u30d1\u30f3\u30c0\u30fc\u3067\u3042\u308bMCP23008-E\/P\u306812F675-I\/P\u3092I2C\u901a\u4fe1\u3067\u8a2d\u5b9a\u3092\u30ec\u30b8\u30b9\u30bf\u306b\u66f8\u304d\u8fbc\u3093\u3060\u308a\u3001I\/O\u306e<\/p>\n","protected":false},"author":1,"featured_media":13266,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5218],"tags":[1488,1487,1382],"class_list":["post-2644","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-microcomputer","tag-12f675","tag-i2c","tag-mcp23008"],"_links":{"self":[{"href":"https:\/\/www.nanghi.net\/index.php?rest_route=\/wp\/v2\/posts\/2644","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nanghi.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nanghi.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nanghi.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nanghi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2644"}],"version-history":[{"count":2,"href":"https:\/\/www.nanghi.net\/index.php?rest_route=\/wp\/v2\/posts\/2644\/revisions"}],"predecessor-version":[{"id":13268,"href":"https:\/\/www.nanghi.net\/index.php?rest_route=\/wp\/v2\/posts\/2644\/revisions\/13268"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nanghi.net\/index.php?rest_route=\/wp\/v2\/media\/13266"}],"wp:attachment":[{"href":"https:\/\/www.nanghi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2644"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nanghi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2644"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nanghi.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2644"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}