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专家好：
请问F2801在烧写程序前后内核电压由1.8V变为1.88V,请问这种情况正常吗？与外部的电源电路是否有很大关系？datasheet上说1.8V的允许范围为1.71V~1.89V。
你好，请检查输入1.8V的电源芯片的输入电压是否有变化？DSP上的3.3V电源是否有变化。
1.88V在输入允许范围，不影响使用。
