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ZYu.1
Associate III
October 16, 2020
Solved

STM32G031G6Ux(UFQFPN28) has no pin to connect external crystal oscillator?

  • October 16, 2020
  • 4 replies
  • 1197 views

I have a project using STM32G031G6Ux(UFQFPN28), so in CubeMX I could not find the external crystal oscillator pins.So I want to know that whether this MCU  has the pin to connect external crystal oscillator?

Dose there have any documents about the design about this MCU,thanks.

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Best answer by Tesla DeLorean

It is expected as part of keeping the board size down that you reuse an existing clock source, ie TCXO for radio, or whatever, or that you use the internal oscillator

4 replies

TDK
October 16, 2020

It has an OSC_IN on PC14, but no OSC_OUT pin. So you can hook it up to a clock source but it can't drive a crystal directly.

Details are in the datasheet:

https://www.st.com/resource/en/datasheet/stm32g031g6.pdf

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ZYu.1
ZYu.1Author
Associate III
October 16, 2020

thanks, ihave got it.

Tesla DeLorean
Tesla DeLoreanBest answer
Guru
October 16, 2020

It is expected as part of keeping the board size down that you reuse an existing clock source, ie TCXO for radio, or whatever, or that you use the internal oscillator

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ZYu.1
ZYu.1Author
Associate III
October 16, 2020

thanks