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Re: USB電源問題
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資深會員
 
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直接接pc usb port 最大輸出電流 500ma
接 usb hub 最大 100ma 你的板子可能有短路，或耗電流太大， pc 的自我保護機制啟動，以免 usb 燒壞
發表於: 2008/7/11 0:54
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USB電源問題
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新會員
 
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想請問各位一下，如果將pic18F2455的週邊usb電路接好之後也將程式燒錄進去。接上USB後卻發生集線器連接埠發生電源爆衝。這個有可能是哪邊發生問題？
發表於: 2008/7/10 17:35
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