{"id":2227,"date":"2019-07-02T09:25:38","date_gmt":"2019-07-02T09:25:38","guid":{"rendered":"http:\/\/fastbitlab.com\/?p=2227"},"modified":"2023-04-20T12:50:52","modified_gmt":"2023-04-20T07:20:52","slug":"gpio-input-mode-high-impedance-state","status":"publish","type":"post","link":"https:\/\/fastbitlab.com\/blog\/gpio-input-mode-high-impedance-state\/","title":{"rendered":"STM32 GPIO Lecture 3 : GPIO input mode with high impedance state"},"content":{"rendered":"<div class=\"tmpl-call_to_action-5 boldgrid-section dynamic-gridblock background-fixed\" style=\"color: #1d1d1d; background-image: linear-gradient(to left, rgba(224, 224, 224, 0.92), rgba(224, 224, 224, 0.92)), url('https:\/\/source.unsplash.com\/WB3ujiKLJwQ\/1920x1080'); background-size: cover; background-position: 50% 50%;\" data-bg-overlaycolor=\"rgba(224,224,224,0.92)\" data-image-url=\"https:\/\/source.unsplash.com\/WB3ujiKLJwQ\/1920x1080\">\n<div class=\"container\">\n<div class=\"row\" style=\"padding-top: 51px; padding-bottom: 50px;\">\n<div class=\"col-md-6 col-sm-8 col-xs-12 col-lg-6\">\n<div style=\"padding: 20% 12%;\" class=\"bg-box\">\n<h2 class=\"entry-title\" data-fontsize=\"20\" data-lineheight=\"27\"><span style=\"color: #000000;\">GPIO input mode with high impedance state<\/span><\/h2>\n<div class=\"row bg-editor-hr-wrap\">\n<div class=\"col-md-12 col-xs-12 col-sm-12 col-lg-12\">\n<div>\n<hr class=\"bg-hr\" style=\"border: 2px solid; margin-left: 0px;\" width=\"100%\">\n<\/div>\n<\/div>\n<\/div>\n<p class=\"\"><span style=\"font-weight: 400; color: #000000;\">In this article, let\u2019s understand what precisely this high impedance state is.<\/span><\/p>\n<p class=\"\">&nbsp;<\/p>\n<p class=\"\"><span style=\"font-weight: 400; color: #000000;\">A high impedance state is also called a Hi-Z state. It\u2019s nothing but keeping your pin floating by not connecting to high voltage state or the ground as shown in Figure1. So, that\u2019s why this state is also called a floating state.<\/span><\/p>\n<p class=\"\"><span style=\"font-weight: 400;\"><span style=\"color: #000000;\">After you power the MCU, by default, all the<\/span> <span style=\"color: #ff6600;\"><a style=\"color: #ff6600; text-decoration: underline;\" href=\"http:\/\/fastbitlab.com\/stm32-gpio-lecture-1-gpio-pin-ports\/\" target=\"_blank\" rel=\"noopener\">GPIO pins<\/a><\/span> <span style=\"color: #000000;\">will be in input mode with a High-Z state or floating state, and this is true with almost all microcontrollers. <\/span><\/span><\/p>\n<p class=\"\"><span style=\"font-weight: 400; color: #000000;\">Keeping the pin in a floating state can lead to leakage current, which may result in high power consumption because a floating pin is highly susceptible to picking up the noise and may result in leakage current.<\/span><\/p>\n<p class=\"\"><span style=\"color: #000000;\">In the following article, let&#8217;s see<\/span> <span style=\"color: #ff6600;\"><strong><a style=\"color: #ff6600; text-decoration: underline;\" href=\"http:\/\/fastbitlab.com\/gpio-input-mode-pull-pull-state\/\" target=\"_blank\" rel=\"noopener\">GPIO input mode with pull-up \/ pull-down state<\/a><\/strong><\/span><\/p>\n<p class=\"\">&nbsp;<\/p>\n<p class=\"\">&nbsp;<\/p>\n<p class=\"\"><span style=\"color: #000080;\"><b>FastBit Embedded Brain Academy Courses,<\/b><\/span><\/p>\n<p class=\"\"><span style=\"color: #000000;\">Click here:<\/span>&nbsp;<span style=\"color: #0000ff;\"><a style=\"color: #0000ff; text-decoration: underline;\" href=\"http:\/\/fastbitlab.com\/course1\" target=\"_blank\" rel=\"noopener\">https:\/\/fastbitlab.com\/course1<\/a><\/span><\/p>\n<\/div>\n<\/div>\n<div class=\"col-md-6 col-sm-4 col-xs-12 align-column-center col-lg-6\">\n<figure id=\"attachment_2234\" aria-describedby=\"caption-attachment-2234\" style=\"width: 1142px\" class=\"wp-caption alignright\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-2234 size-full\" src=\"http:\/\/fastbitlab.com\/wp-content\/uploads\/2019\/07\/Screenshot-95.png\" alt=\"GPIO input mode with high impedance state\" width=\"1142\" height=\"506\" srcset=\"https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2019\/07\/Screenshot-95.png 1142w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2019\/07\/Screenshot-95-300x133.png 300w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2019\/07\/Screenshot-95-768x340.png 768w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2019\/07\/Screenshot-95-1024x454.png 1024w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2019\/07\/Screenshot-95-600x266.png 600w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2019\/07\/Screenshot-95-120x53.png 120w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2019\/07\/Screenshot-95-500x222.png 500w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2019\/07\/Screenshot-95-200x89.png 200w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2019\/07\/Screenshot-95-400x177.png 400w, https:\/\/fastbitlab.com\/blog\/wp-content\/uploads\/2019\/07\/Screenshot-95-800x354.png 800w\" sizes=\"(max-width: 1142px) 100vw, 1142px\" \/><figcaption id=\"caption-attachment-2234\" class=\"wp-caption-text\"><span style=\"color: #000000;\">Figure. GPIO input mode with high impedance state<\/span><\/figcaption><\/figure>\n<\/div>\n<\/div>\n<div class=\"row\"><\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>GPIO input mode with high impedance state In this article, let\u2019s understand what precisely this high impedance state is. &nbsp; A high impedance state is also called a Hi-Z state. It\u2019s nothing but keeping your pin floating by not connecting to high voltage state or the ground as shown in Figure1. So, that\u2019s why this [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2234,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"0","ocean_second_sidebar":"0","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"0","ocean_custom_header_template":"0","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"0","ocean_menu_typo_font_family":"0","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"0","ocean_post_oembed":"","ocean_post_self_hosted_media":"","ocean_post_video_embed":"","ocean_link_format":"","ocean_link_format_target":"self","ocean_quote_format":"","ocean_quote_format_link":"post","ocean_gallery_link_images":"off","ocean_gallery_id":[],"footnotes":""},"categories":[8],"tags":[20],"class_list":["post-2227","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-stm32-gpio","entry","has-media"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>GPIO input mode with high impedance state | STM32 GPIO<\/title>\n<meta name=\"description\" content=\"A high impedance state is also called a Hi-Z state. 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