{"id":12247,"date":"2021-06-02T13:39:53","date_gmt":"2021-06-02T13:39:53","guid":{"rendered":"http:\/\/blog.bachi.net\/?p=12247"},"modified":"2021-06-02T13:40:22","modified_gmt":"2021-06-02T13:40:22","slug":"stm32-crystal-oscillator","status":"publish","type":"post","link":"https:\/\/blog.bachi.net\/?p=12247","title":{"rendered":"STM32 Crystal Oscillator (8MHz or 25MHz?)"},"content":{"rendered":"<h3>High-speed external (HSE) clock<\/h3>\n<ul>\n<li>25MHz: A 25Mhz crystal is an advantage for designs that use the MII MAC ethernet interface because it&#8217;s possible to chain the clock out from STM32 and into the PHY (an MII PHY requires a 25Mhz clock input).<\/li>\n<li>8 MHZ: These may come in slightly larger packages than the 25 MHz crystals.<\/li>\n<\/ul>\n<p><a href=\"https:\/\/www.st.com\/resource\/en\/application_note\/dm00443870-getting-started-with-stm32g0-series-hardware-development-stmicroelectronics.pdf\">AN5096 &#8211; Getting started with STM32G0 Series hardware development<\/a><br \/>\nThe 4 to 48 MHz external oscillator has the advantage of producing a very accurate rate on the main clock.<\/p>\n<p><a href=\"https:\/\/community.st.com\/s\/question\/0D50X00009XkZry\/what-is-the-difference-between-using-a-8mhz-and-a-25-mhz-quartz-\">What is the difference between using a 8MHz and a 25 MHz quartz ?<\/a><\/p>\n<p><a href=\"https:\/\/electronics.stackexchange.com\/questions\/491786\/crystal-oscillator-choices-stm32f4\">Crystal Oscillator Choices (STM32F4)<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>High-speed external (HSE) clock 25MHz: A 25Mhz crystal is an advantage for designs that use the MII MAC ethernet interface because it&#8217;s possible to chain the clock out from STM32 and into the PHY (an MII PHY requires a 25Mhz clock input). 8 MHZ: These may come in slightly larger packages than the 25 MHz [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-12247","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts\/12247","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=12247"}],"version-history":[{"count":2,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts\/12247\/revisions"}],"predecessor-version":[{"id":12249,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts\/12247\/revisions\/12249"}],"wp:attachment":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12247"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12247"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12247"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}