{"id":3592,"date":"2018-12-27T08:14:37","date_gmt":"2018-12-26T23:14:37","guid":{"rendered":"http:\/\/fisherman.jp\/23\/?p=3592"},"modified":"2018-12-28T09:08:13","modified_gmt":"2018-12-28T00:08:13","slug":"gpio-pull-up-down-resistor-value-raspberry-pi-zero-wh","status":"publish","type":"post","link":"http:\/\/fisherman.jp\/23\/3592","title":{"rendered":"IC2 &#038; GPIO Pull-up\/down resistor value Raspberry Pi Zero WH"},"content":{"rendered":"<p>GPIO Pull-up\/down resistor value Raspberry Pi Zero WH \u6e2c\u5b9a \u5185\u90e8\u30d7\u30eb\u30a2\u30c3\u30d7\/\u30c0\u30a6\u30f3\u62b5\u6297\u5024<br \/>\n3.284V 1.590V up-internal down-473<br \/>\n1.590V\/3.284V=473\/(473+X) -&gt; X=50K\u03a9 approx.(Pull-up)<br \/>\n3.284V 1.596V up-473 down-internal<br \/>\n1.596V\/3.284V=X\/(473+X) -&gt; X=44.4K\u03a9 approx.(Pull-down)<br \/>\nmin50K\u03a9 &#8211; max65K\u03a9 <a href=\"https:\/\/www.raspberrypi.org\/documentation\/hardware\/raspberrypi\/gpio\/README.md\">\u516c\u5f0f\u30b5\u30a4\u30c8<\/a><br \/>\n<a href=\"http:\/\/fisherman.jp\/23\/3592\/screenshot-from-2018-12-28-09-05-57\" rel=\"attachment wp-att-3628\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-thumbnail wp-image-3628\" src=\"http:\/\/fisherman.jp\/23\/wp-content\/uploads\/2018\/12\/Screenshot-from-2018-12-28-09-05-57-80x80.png\" alt=\"\" width=\"80\" height=\"80\" \/><\/a><\/p>\n<p>I2C Pull-up resistor value Raspberry Pi Zero WH \u6e2c\u5b9a \u5185\u90e8\u30d7\u30eb\u30a2\u30c3\u30d7\u62b5\u6297\u5024<br \/>\n3.284V 3.174V up-internal down-473<br \/>\n3.174V\/3.284V=473\/(473+X) -&gt; X=1.628K\u03a9 approx.(Pull-up)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>GPIO Pull-up\/down resistor value Raspberry Pi Zero WH \u6e2c\u5b9a \u5185\u90e8\u30d7\u30eb\u30a2\u30c3\u30d7\/\u30c0\u30a6\u30f3\u62b5\u6297\u5024 3.284V 1.590V up-internal down-473 1.5 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[],"class_list":["post-3592","post","type-post","status-publish","format-standard","hentry","category-raspberry-pi"],"_links":{"self":[{"href":"http:\/\/fisherman.jp\/23\/wp-json\/wp\/v2\/posts\/3592","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/fisherman.jp\/23\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/fisherman.jp\/23\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/fisherman.jp\/23\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/fisherman.jp\/23\/wp-json\/wp\/v2\/comments?post=3592"}],"version-history":[{"count":11,"href":"http:\/\/fisherman.jp\/23\/wp-json\/wp\/v2\/posts\/3592\/revisions"}],"predecessor-version":[{"id":3630,"href":"http:\/\/fisherman.jp\/23\/wp-json\/wp\/v2\/posts\/3592\/revisions\/3630"}],"wp:attachment":[{"href":"http:\/\/fisherman.jp\/23\/wp-json\/wp\/v2\/media?parent=3592"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/fisherman.jp\/23\/wp-json\/wp\/v2\/categories?post=3592"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/fisherman.jp\/23\/wp-json\/wp\/v2\/tags?post=3592"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}