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href="../../../topics/sdk/efuse/efuse_user_guide.html" id="efuse_user_guide-d4445e8115-link">eFuse 使用指南</a></div></div><ul role="group" class="navbar-nav nav-list"><li role="treeitem"><div data-tocid="efuse_configuration-d4445e8129" class="topicref" data-id="efuse_configuration" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/efuse/efuse_config.html" id="efuse_configuration-d4445e8129-link">eFuse 配置</a></div></div></li><li role="treeitem"><div data-tocid="efuse_debug_guide-d4445e8143" class="topicref" data-id="efuse_debug_guide" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/efuse/efuse_debug.html" id="efuse_debug_guide-d4445e8143-link">调试指南</a></div></div></li><li role="treeitem"><div data-tocid="efuse_test_guide-d4445e8157" class="topicref" data-id="efuse_test_guide" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/efuse/efuse_test.html" id="efuse_test_guide-d4445e8157-link">测试指南</a></div></div></li><li role="treeitem"><div data-tocid="efuse_design_intro-d4445e8171" class="topicref" data-id="efuse_design_intro" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/efuse/efuse-design_intro.html" id="efuse_design_intro-d4445e8171-link">设计说明</a></div></div></li></ul></li><li role="treeitem" aria-expanded="false"><div data-tocid="spi_enc_user_guide-d4445e8185" class="topicref" data-id="spi_enc_user_guide" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action spi_enc_user_guide-d4445e8185-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/spienc/spi-enc-user-guide.html" id="spi_enc_user_guide-d4445e8185-link">SPI ENC</a></div></div></li></ul></li></ul></li></ul></div>
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<div class=" wh_topic_content body "><main role="main"><article class="- topic/topic concept/concept topic concept" role="article" aria-labelledby="ariaid-title1">
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<span class="edit-link" style="font-size:12px; opacity:0.6; text-align:right; vertical-align:middle"><a target="_blank" title="Edit this document" href="http://172.16.35.88/tasks/jdssno1uvvbf2mltu9kb9v3if05d5gopuakboe8hlud18rma/edit/F:/aicdita/aicdita-cn/topics/sdk/efuse/efuse_user_guide.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">eFuse 使用指南</h1>
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<div class="date inPage">15 Jan 2024</div><div style="color: gray;"></div>
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<div class="- topic/body concept/conbody body conbody">
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<p class="- topic/p p" data-ofbid="d147679e33__20250123155214">芯片电路通常是生产时物理固化的电路，生产完成之后不可改变。实际应用中有一些重要信息，需要固化在芯片之中，
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使得上电即可读取使用，比如一些硬件的性能参数信息。但是这些参数可能与芯片的生产工艺、所用的材料等有关系，
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无法在设计时确定，因此需要有一种存储技术，即可以固化信息，又能够在生产之后进行修改。</p>
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<p class="- topic/p p" data-ofbid="d147679e36__20250123155214">eFuse 就是一种允许芯片上的电路在运行时进行修改的技术。它类似 EEPROM，属于一次性可编程存储器。eFuse ROM 里初始存储的内容都是
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0，当需要修改某个比特位的值时，通过片上电压（通常为 2.5V）提供一个持续一定时长的直流脉冲， 将代表该比特位的单根熔丝烧断，使得该比特位变为
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1。熔丝被烧断之后，无法再恢复连接，因此这样的修改是一次性不可逆的。</p>
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<div class="- topic/p p" data-ofbid="d147679e39__20250123155214">ArtInChip 芯片中使用 eFuse 保存的配置信息包括但不限于：<ul class="- topic/ul ul" id="efuse_user_guide__ul_x5b_fqy_21c" data-ofbid="efuse_user_guide__ul_x5b_fqy_21c">
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<li class="- topic/li li" data-ofbid="d147679e43__20250123155214">
|
||
<p class="- topic/p p" data-ofbid="d147679e45__20250123155214">芯片 ID</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d147679e49__20250123155214">
|
||
<p class="- topic/p p" data-ofbid="d147679e51__20250123155214">校准参数</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d147679e55__20250123155214">
|
||
<p class="- topic/p p" data-ofbid="d147679e57__20250123155214">功能开关配置</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d147679e61__20250123155214">
|
||
<p class="- topic/p p" data-ofbid="d147679e63__20250123155214">密钥信息</p>
|
||
</li>
|
||
</ul></div>
|
||
<p class="- topic/p p" data-ofbid="d147679e68__20250123155214">eFuse 内容通过 SID 硬件模块来访问。</p>
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="efuse_user_guide__table_jvd_gqy_21c" data-ofbid="efuse_user_guide__table_jvd_gqy_21c" data-cols="3"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 1</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">术语定义</span></caption><colgroup><col style="width:33.33333333333333%"/><col style="width:33.33333333333333%"/><col style="width:33.33333333333333%"/></colgroup><thead class="- topic/thead thead">
|
||
<tr class="- topic/row">
|
||
<th class="- topic/entry entry colsep-1 rowsep-1" id="efuse_user_guide__table_jvd_gqy_21c__entry__1">术语</th>
|
||
<th class="- topic/entry entry colsep-1 rowsep-1" id="efuse_user_guide__table_jvd_gqy_21c__entry__2">定义</th>
|
||
<th class="- topic/entry entry colsep-0 rowsep-1" id="efuse_user_guide__table_jvd_gqy_21c__entry__3">注释说明</th>
|
||
</tr>
|
||
</thead><tbody class="- topic/tbody tbody">
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="efuse_user_guide__table_jvd_gqy_21c__entry__1">SID</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="efuse_user_guide__table_jvd_gqy_21c__entry__2">Secure ID</td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="efuse_user_guide__table_jvd_gqy_21c__entry__3">安全 ID 模块</td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-0" headers="efuse_user_guide__table_jvd_gqy_21c__entry__1">eFuse</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-0" headers="efuse_user_guide__table_jvd_gqy_21c__entry__2">Electric Fuse</td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-0" headers="efuse_user_guide__table_jvd_gqy_21c__entry__3">电子熔丝</td>
|
||
</tr>
|
||
</tbody></table></div>
|
||
|
||
</div>
|
||
</article></main></div>
|
||
|
||
<div class=" wh_child_links d-print-none "><nav aria-label="Child Links" role="navigation" class="- topic/related-links related-links"><ul class="ullinks"><li class="- topic/link link ulchildlink"><strong><a href="../../../topics/sdk/efuse/efuse_config.html">eFuse 配置</a></strong></li><li class="- topic/link link ulchildlink"><strong><a href="../../../topics/sdk/efuse/efuse_debug.html">调试指南</a></strong></li><li class="- topic/link link ulchildlink"><strong><a href="../../../topics/sdk/efuse/efuse_test.html">测试指南</a></strong></li><li class="- topic/link link ulchildlink"><strong><a href="../../../topics/sdk/efuse/efuse-design_intro.html">设计说明</a></strong></li></ul></nav></div>
|
||
|
||
|
||
|
||
|
||
</div>
|
||
|
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</div>
|
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</div>
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|
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</div>
|
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<footer class="navbar navbar-default wh_footer">
|
||
<div class=" footer-container mx-auto ">
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<title>footer def</title>
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<style><!--
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.p1 {
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font-family: FangZhengShuSong, Times, serif;
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}
|
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.p2 {
|
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font-family: Arial, Helvetica, sans-serif;
|
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}
|
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.p3 {
|
||
font-family: "Lucida Console", "Courier New", monospace;
|
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}
|
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|
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--></style>
|
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<div class="webhelp.fragment.footer">
|
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<p class="p1">Copyright © 2019-2024 广东匠芯创科技有限公司. All rights reserved.</p>
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</div><div>
|
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<div class="generation_time">
|
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Update Time: 2025-01-23
|
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</div>
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</div>
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</div>
|
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</footer>
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<button id="go2top" class="d-print-none" title="返回顶部">
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<span class="oxy-icon oxy-icon-up"></span>
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<div id="modal_img_container"></div>
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<div id="caption"></div>
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</div>
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<script src="${pd}/publishing/publishing-styles-AIC-template/js/custom.js" defer="defer"></script>
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</body>
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</html> |