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不能识别芯片 #12

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Thawnoy opened this issue Jun 24, 2022 · 2 comments
Closed

不能识别芯片 #12

Thawnoy opened this issue Jun 24, 2022 · 2 comments

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@Thawnoy
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Thawnoy commented Jun 24, 2022

你好Utility和MDK都无法连接到设备
@marseric marseric mentioned this issue Jun 24, 2022
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@FASTSHIFT
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检查MCU供电脚电压是否正常。
检查SWD接口是否有短路或断路。
焊接QFN芯片需要把底下焊锡挤出来，不然很容易短路。

@Thawnoy
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Thawnoy commented Jun 26, 2022

谢谢指点，但是发现晶振输出的频率不对，是不是因为这个

@Thawnoy Thawnoy closed this as completed Jul 5, 2022
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@FASTSHIFT @Thawnoy