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Question asked by 旭余 朱 on Dec 10, 2019
Latest reply on Dec 12, 2019 by 旭余 朱


MKE04 is connected to an 8M passive crystal. After the oscillation, test the waveform of EXTAL with an oscilloscope and find that it is only 1V to the ground.  When measuring other MCU, the voltage of this pin is relatively high. The reason for paying attention to this voltage is because the crystal manufacturer said that the starting point of the passive crystal is 1.3V.  So I want to ask if this is normal.  Other than that, these frequencies are normal.