[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-1-en-105":3,"doc-detail-238413-en":53,"doc-seo-238413-105":75},{"code":4,"msg":5,"data":6},0,"success",[7,14,19,24,29,34,39,44,49],{"id":8,"doc_module":9,"doc_module_name":10,"category_name":11,"show_sort_weight":12,"slug":13},11,1,"Template","Presentations",90,"presentations",{"id":15,"doc_module":9,"doc_module_name":10,"category_name":16,"show_sort_weight":17,"slug":18},12,"Resumes",80,"resumes",{"id":20,"doc_module":9,"doc_module_name":10,"category_name":21,"show_sort_weight":22,"slug":23},14,"Invoices",70,"invoices",{"id":25,"doc_module":9,"doc_module_name":10,"category_name":26,"show_sort_weight":27,"slug":28},15,"Posters",60,"posters",{"id":30,"doc_module":9,"doc_module_name":10,"category_name":31,"show_sort_weight":32,"slug":33},16,"Social Media",50,"social-media",{"id":35,"doc_module":9,"doc_module_name":10,"category_name":36,"show_sort_weight":37,"slug":38},17,"Forms",40,"forms",{"id":40,"doc_module":9,"doc_module_name":10,"category_name":41,"show_sort_weight":42,"slug":43},18,"Letters",30,"letters",{"id":45,"doc_module":9,"doc_module_name":10,"category_name":46,"show_sort_weight":47,"slug":48},21,"Paper Templates",5,"papers-templates",{"id":50,"doc_module":9,"doc_module_name":10,"category_name":51,"show_sort_weight":4,"slug":52},158,"General","general-158",{"code":4,"msg":5,"data":54},{"doc_id":55,"user_id":56,"nickname":57,"user_avatar":58,"doc_module":9,"category_id":45,"category_name":46,"doc_title":59,"doc_description":60,"doc_content":61,"file_id":62,"file_url":63,"file_type":64,"file_size":65,"view_count":66,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":45,"language":67,"language_code":68,"site_id":69,"html_lang":68,"table_of_contents":70,"faqs":71,"seo_title":72,"seo_description":60,"update_tm":73,"read_time":74},238413,7971461740886,"Theodore","https://ap-avatar.wpscdn.com/davatar_3d24733baf745e90a7e4bdd5f77d97b2","Raspberry Pi HAT+ Specification - Hardware-Attached-on-Top Guide","Raspberry Pi HAT+ Specification provides a technical guide for designing hardware that attaches on top of a Raspberry Pi. It covers the motivation for following the specification, power-state behavior (including standby support and GPIO power-on state), and the HAT+ ID EEPROM model, classes, stackability, and device specification. The document also defines power HAT+ concepts, HAT+ electrical and mechanical requirements, labeling conventions, and supporting appendices covering EEPROM data formats, EEPROM tools, and release history, alongside legal disclaimers.","Raspberry Pi HAT+ Specification  \nA guide to designing Hardware-Attached-on-Top of a Raspberry Pi.  \nColophon  \n© 2024 Raspberry Pi Ltd  \nThis documentation is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International (CC BY-ND) .  \nbuild-date: 2024-12-05  \nbuild-version: 6df06cc-clean  \nLegal disclaimer notice  \nTECHNICAL AND RELIABILITY DATA FOR RASPBERRY PI PRODUCTS (INCLUDING DATASHEETS) AS MODIFIED FROM TIME TO TIME (\"RESOURCES\") ARE PROVIDED BY RASPBERRY PI LTD (\"RPL\") \"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW IN NO EVENT SHALL RPL BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THE RESOURCES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  \nRPL reserves the right to make any enhancements, improvements, corrections or any other modifications to the RESOURCES or any products described in them at any time and without further notice.  \nThe RESOURCES are intended for skilled users with suitable levels of design knowledge. Users are solely responsible for their selection and use of the RESOURCES and any application of the products described in them. User agrees to indemnify and hold RPL harmless against all liabilities, costs, damages or other losses arising out of their use of the RESOURCES.  \nRPL grants users permission to use the RESOURCES solely in conjunction with the Raspberry Pi products. All other use of the RESOURCES is prohibited. No licence is granted to any other RPL or other third party intellectual property right.  \nHIGH RISK ACTIVITIES. Raspberry Pi products are not designed, manufactured or intended for use in hazardous environments requiring fail safe performance, such as in the operation of nuclear facilities, aircraft navigation or communication systems, air traffic control, weapons systems or safety-critical applications (including life support systems and other medical devices), in which the failure of the products could lead directly to death, personal injury or severe physical or environmental damage (\"High Risk Activities\") . RPL specifically disclaims any express or implied warranty of fitness for High Risk Activities and accepts no liability for use or inclusions of Raspberry Pi products in High Risk Activities.  \nRaspberry Pi products are provided subject to RPL’s Standard Terms. RPL’s provision of the RESOURCES does not expand or otherwise modify RPL’s Standard Terms including but not limited to the disclaimers and warranties expressed in them.  \nTable of contents  \nColophon .............................................................................................. 1  \nLegal disclaimer notice ............................................................................... 1  \n1. Introduction .......................................................................................... 3  \n1.1. Changes to the original HAT specification............................................................ 3  \n1.2. Why follow the HAT+ specification? ................................................................. 3  \n2. Power States ......................................................................................... 4  \n2.1. Raspberry Pi Power States ......................................................................... 4  \n2.2. STANDBY mode support ............................................................................. 4  \n2.3. GPIO Power-on State ............................................................................. 4  \n3. HAT+ ID EEPROM ...........","cbCaieIVcE2gajvs","https://ap.wps.com/l/cbCaieIVcE2gajvs","pdf",1210200,8,"English","en",105,"# Colophon\n## Legal disclaimer notice\n# 1. Introduction\n## 1.1. Changes to the original HAT specification\n## 1.2. Why follow the HAT+ specification?\n# 2. Power States\n## 2.1. Raspberry Pi Power States\n## 2.2. STANDBY mode support\n## 2.3. GPIO Power-on State\n# 3. HAT+ ID EEPROM\n## 3.1. HAT+ classes\n## 3.2. Stackability\n## 3.3. EEPROM Device Specification\n## 3.3.1. Recommended Part\n# 4. Power HAT+s\n## 4.1. Power modes\n## 4.2. Define an overlay for a Power HAT+\n## 4.2.1. Example overlay\n# 5. HAT+ marking\n## 5.1. Product name conventions\n# 6. HAT+ electrical specification\n# 7. HAT+ mechanical specification\n## 7.1. Mechanical examples\n# Appendix A: HAT+ ID EEPROM specification\n# Appendix B: HAT+ EEPROM tools\n# Appendix C: Release History","[{\"question\":\"What is the purpose of the HAT+ specification for Raspberry Pi hardware design?\",\"answer\":\"It provides guidance for designing hardware attached on top of a Raspberry Pi and explains why the specification should be followed, including changes from the original HAT specification.\"},{\"question\":\"Which power-state behaviors does the document define for HAT+ devices?\",\"answer\":\"It defines Raspberry Pi power states, STANDBY mode support, GPIO power-on state behavior, and power modes for Power HAT+s.\"},{\"question\":\"What does the HAT+ ID EEPROM specification include?\",\"answer\":\"It covers HAT+ classes, stackability, the EEPROM device specification, and provides an appendix with the HAT+ ID EEPROM data format specification and recommended part information.\"}]","Raspberry Pi HAT+ Specification - Hardware-Attached-on-Top Guide | PDF",1789135210,7,{"code":4,"msg":76,"data":77},"ok",{"site_id":69,"language":68,"slug":78,"title":59,"keywords":79,"description":60,"schema_data":80,"social_meta":136,"head_meta":138,"extra_data":140,"updated_unix":141},"raspberry-pi-hat-specification-hardware-attached-on-top-guide","",{"@graph":81,"@context":135},[82,98,118],{"@type":83,"itemListElement":84},"BreadcrumbList",[85,89,92,95],{"item":86,"name":87,"@type":88,"position":9},"https://docshare.wps.com","Home","ListItem",{"item":90,"name":10,"@type":88,"position":91},"https://docshare.wps.com/template/",2,{"item":93,"name":46,"@type":88,"position":94},"https://docshare.wps.com/template/paper-templates/",3,{"item":96,"name":59,"@type":88,"position":97},"https://docshare.wps.com/template/raspberry-pi-hat-specification-hardware-attached-on-top-guide/238413/",4,{"url":96,"name":59,"@type":99,"image":100,"author":105,"headline":59,"publisher":107,"fileFormat":110,"inLanguage":68,"description":60,"dateModified":111,"datePublished":112,"encodingFormat":110,"isAccessibleForFree":113,"interactionStatistic":114},"DigitalDocument",{"url":101,"@type":102,"width":103,"height":104},"https://docshare.wps.com/thumbnails/raspberry-pi-hat-specification-hardware-attached-on-top-guide/238413.png","ImageObject",442,249,{"name":57,"@type":106},"Person",{"url":86,"name":108,"@type":109},"DocShare","Organization","application/pdf","2026-10-07","2026-09-11",true,{"@type":115,"interactionType":116,"userInteractionCount":66},"InteractionCounter",{"@type":117},"ViewAction",{"@type":119,"mainEntity":120},"FAQPage",[121,127,131],{"name":122,"@type":123,"acceptedAnswer":124},"What is the purpose of the HAT+ specification for Raspberry Pi hardware design?","Question",{"text":125,"@type":126},"It provides guidance for designing hardware attached on top of a Raspberry Pi and explains why the specification should be followed, including changes from the original HAT specification.","Answer",{"name":128,"@type":123,"acceptedAnswer":129},"Which power-state behaviors does the document define for HAT+ devices?",{"text":130,"@type":126},"It defines Raspberry Pi power states, STANDBY mode support, GPIO power-on state behavior, and power modes for Power HAT+s.",{"name":132,"@type":123,"acceptedAnswer":133},"What does the HAT+ ID EEPROM specification include?",{"text":134,"@type":126},"It covers HAT+ classes, stackability, the EEPROM device specification, and provides an appendix with the HAT+ ID EEPROM data format specification and recommended part information.","https://schema.org",{"og:url":96,"og:type":137,"og:title":59,"og:site_name":108,"og:description":60},"article",{"robots":139,"canonical":96},"index,follow",{"doc_id":55,"site_id":69},1790436505]