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<div class=" wh_topic_content body "><main role="main"><article class="- topic/topic topic" role="article" aria-labelledby="ariaid-title1"><span class="edit-link" style="font-size:12px; opacity:0.6; text-align:right; vertical-align:middle"><a target="_blank" href="http://172.16.35.88/tasks/jdssno1uvvbf2mltu9kb9v3if05d5gopuakboe8hlud18rma/edit/F:/aicdita/aicdita-cn/topics/product/d12x-pu-pd-reset.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">上下电时序及复位</h1><div class="date inPage">21 Feb 2024</div><div style="color: gray;"></div><div class="- topic/body body"><section class="- topic/section section" id="topic_yxg_5f4_m1c__section_uc5_gg4_m1c" data-ofbid="topic_yxg_5f4_m1c__section_uc5_gg4_m1c"><h2 class="- topic/title title sectiontitle">上下电时序</h2>
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<p class="- topic/p p" data-ofbid="d88967e25__20250121171530">VCC33_IO
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、
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VDD11_SYS 和 LDO18
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供电无上下电顺序要求。VCC33_IO
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上电上升沿时间需大于 150us。</p>
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</section><section class="- topic/section section" id="topic_yxg_5f4_m1c__section_dck_hg4_m1c" data-ofbid="topic_yxg_5f4_m1c__section_dck_hg4_m1c"><h2 class="- topic/title title sectiontitle">复位源</h2>
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<div class="- topic/p p" data-ofbid="d88967e33__20250121171530">芯片系统有以下几种复位源，任何一种复位条件成立，会对芯片产生复位：<ul class="- topic/ul ul" id="topic_yxg_5f4_m1c__ul_tnv_42b_3zb" data-ofbid="topic_yxg_5f4_m1c__ul_tnv_42b_3zb"><li class="- topic/li li" data-ofbid="d88967e36__20250121171530">系统上电复位：在
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VCC33_IO 和
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VDD11_SYS 上电后产生复位，上电 10 ms
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内系统自动放开此复位。</li><li class="- topic/li li" data-ofbid="d88967e38__20250121171530">外部引脚复位：引脚 RESETN 输入低电平并持续 2 ms
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以上产生复位。</li><li class="- topic/li li" data-ofbid="d88967e40__20250121171530">调试器复位：在接收到 JTAG IO 上的 RESET
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命令后立即产生复位。</li><li class="- topic/li li" data-ofbid="d88967e42__20250121171530">看门狗复位：通过软件使能后，在 WDOG
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超时复位条件满足下立即产生复位。</li><li class="- topic/li li" data-ofbid="d88967e44__20250121171530">过温复位：通过软件使能后，在 THS 温度超过设定值时立即产生复位
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。</li></ul></div>
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<div class=" wh_topic_toc "><div class="wh_topic_label">在本页上</div><ul><li class="section-item"><div class="section-title"><a href="#topic_yxg_5f4_m1c__section_uc5_gg4_m1c" data-tocid="topic_yxg_5f4_m1c__section_uc5_gg4_m1c">上下电时序</a></div></li><li class="section-item"><div class="section-title"><a href="#topic_yxg_5f4_m1c__section_dck_hg4_m1c" data-tocid="topic_yxg_5f4_m1c__section_dck_hg4_m1c">复位源</a></div></li></ul></div>
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