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YShe.1
Associate II
April 2, 2023
Question

One pin of HSE crystal on STM32L422KBT6

  • April 2, 2023
  • 7 replies
  • 3842 views

Hello, please help me with crystal:

ABM3B-26.000MHZ-10-1-U-T

Is it connectd correctly? It's not working at all. Never seen one pin connetcion like RCC_CK_IN_PA0.

0693W00000bhLqbQAE.png0693W00000bhLqqQAE.png

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7 replies

AScha.3
Super User
April 2, 2023

>Is it connectd correctly?

no.

this is a crystal, need two pins conn. to oszillator.

0693W00000bhLroQAE.png 

+

but in Cube you set input for oszillator, also your connecting 3v3 for oszillator.

0693W00000bhLrtQAE.pngbut probably wrong pinout, to use standard oszillator.

-> you should decide, what you wanna use now: crystal or oszillator ?

then use some oszillator also...

maybe you should first read+learn a little bit about processors and chips... :)

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YShe.1
YShe.1Author
Associate II
April 2, 2023

Thanks but nothing new. I have only one pin and this is why I am here.

0693W00000bhLt6QAE.png 

AScha.3
Super User
April 2, 2023

ok, so use an oszillator .

0693W00000bhLtkQAE.png

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YShe.1
YShe.1Author
Associate II
April 2, 2023

The ABM3B-26.000MHZ-10-1-U-T is not a oszillator is crystal. It has 2 and 4 GND pins and 1 and 3 of crystal connection. My STM32 has only one pin for high speed crystal like shown on the CAD and CubeMX. Before this post I tryed to conect it to low speed 2 pins and it does't worked. I am very confused and dissapointed. Any way thanks for your posts.

YShe.1
YShe.1Author
Associate II
April 2, 2023

If I change it for example to SiT8208AI-3F-33E-25.000000X is it will work?

Tesla DeLorean
Guru
April 2, 2023

>>I am very confused and disappointed.

Why, because you have a device that takes a singular input, and you're trying to connect something that doesn't work that way? You need something that outputs a clock when powered.

>>If I change it for example to SiT8208AI-3F-33E-25.000000X is it will work?

That seems more appropriate, or a TCXO

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AScha.3
Super User
April 2, 2023

right.

but expensive...look: mouser , 815-ASFL3-25.0M-EK-T ; 25.0000MHZ CMOS SMD, 5 mm x 3.2 mm , 1,02 € .

but look on your pinout - wrong connection on oscillator will not work, just destroy it.

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