常见泽1 发表于 2023-10-28 17:50

【STM32F769-discovery开发板】第八篇 最大频率测试

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<p ><span style="font-family:宋体;"><span style="font-size:16px;">这一篇主要测试下STM32F769的最大能够跑的频率</span></span></p>

<p ><span style="font-family:宋体;"><span style="font-size:16px;">从手册里可以明显看出来 标称的是216MHz最大频率</span></span></p>

<p ><span style="font-family:宋体;"><span style="font-size:16px;">大家都知道肯定可以一定的超频</span></span></p>

<p ><span style="font-family:宋体;"><span style="font-size:16px;">比如STM32F407、STM32F103都能一定程度的超频</span></span></p>

<p ><span style="font-family:宋体;"><span style="font-size:16px;">看看这个能超频到多少</span></span></p>

<p ><span style="font-family:宋体;"><span style="font-size:16px;"> &nbsp;</span></span></p>

<p ><span style="font-family:宋体;"><span style="font-size:16px;">通过CUBE来配置</span></span></p>

<p ><span style="font-family:宋体;"><span style="font-size:16px;">修改PLLM N P的系数</span></span></p>

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<p ><span style="font-family:宋体;"><span style="font-size:16px;"> &nbsp;</span></span></p>

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<p ><span style="font-family:宋体;"><span style="font-size:16px;">配置成250MHz</span></span></p>

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<p ><span style="font-family:宋体;"><span style="font-size:16px;"> &nbsp;</span></span></p>

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<p ><span style="font-family:宋体;"><span style="font-size:16px;">测试OK</span></span></p>

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<p ><span style="font-family:宋体;"><span style="font-size:16px;">配置成320MHz</span></span></p>

<p ><span style="font-family:宋体;"><span style="font-size:16px;"> &nbsp;</span></span></p>

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<p ><span style="font-family:宋体;"><span style="font-size:16px;"> &nbsp;</span></span></p>

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<p ><span style="font-family:宋体;"><span style="font-size:16px;">没问题</span></span></p>

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<p ><span style="font-family:宋体;"><span style="font-size:16px;">配置成350MHz</span></span></p>

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<p ><span style="font-family:宋体;"><span style="font-size:16px;"> &nbsp;</span></span></p>

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<p ><span style="font-family:宋体;"><span style="font-size:16px;"> &nbsp;</span></span></p>

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<p ><span style="font-family:宋体;"><span style="font-size:16px;">运行出错</span></span></p>

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<p ><span style="font-family:宋体;"><span style="font-size:16px;">降低到330M</span></span></p>

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<p ><span style="font-family:宋体;"><span style="font-size:16px;"> &nbsp;</span></span></p>

<p ><span style="font-family:宋体;"><span style="font-size:16px;"> &nbsp;</span></span></p>

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<p ><span style="font-family:宋体;"><span style="font-size:16px;">实际能跑大概在320M-330MH左右</span></span></p>

<p ><span style="font-family:宋体;"><span style="font-size:16px;">这只是最简单的能跑的最大频率</span></span></p>

<p ><span style="font-family:宋体;"><span style="font-size:16px;">如果搭载复杂的外设什么的,频率会有区别</span></span></p>

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<p ><span style="font-family:宋体;"><span style="font-size:16px;">其他功能没有全部测试</span></span></p>

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jobszheng5 发表于 2023-10-28 17:54

<p>厉害了!</p>

<p>我还让其跑在200MHz呢~~</p>

lugl4313820 发表于 2023-10-29 08:14

这个可以哦,温度上升怎么样?我的F746不知道可以跑多少,不过我运行在200M就感觉有点发热。
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