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F28M35问题



F28M35内部有自己的LDO,请问此LDO是上电之后就工作呢还是需要给DSP刷个程序,然后内部的LDO才能工作啊?

若必须要先刷程序才能启动内部的LDO的话,要是直接给DSP上了3.3V的电,内部的LDO会有影响吗??