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External crystal not oscillating

MDeva.1
Associate II

Hello,

I have custom board. I am working on STM32H7 controller. We use the external crystal of 25Mhz. But when we use that external oscillator using the HSE ,it doesn't provide the clock to controller. Why these happening. Can you please help me

10 REPLIES 10
CYANG.1
ST Employee

Hi

You may refer to ST STM32H7 tools boards on ST website and choose same parameters parts of crystal circuit on these boards. ​