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特意查了一下手册,F133 里面 VCC-IO 管 PB / PC / PF / USB 的电源,也就是说这四个功能共用VCC-IO电源,一动则全动。
PD / PE / PG 分别用是自己独立的IO电源,比如 PD组你想接 1V8的陀螺仪芯片,那么VCC-PD接1V8就可以了。
参考原理图全接一起去了。
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