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P
PKR
Associate
May 19, 2026
Solved

ST67W611M1: measure frequency of external 32.768 kHz crystal oscillator circuit

  • May 19, 2026
  • 2 replies
  • 79 views

Dear all,

is it possible to measure the frequency of the 32,768kHz oscillator (external crystal used) at a buffered pin similar to the MOC pin of the STM32 to tune the frequency by the external capacitors? It would be difficult to do this at pin XTAL32k_IN/OUT without influencing the oscillator frequency.

Best regards,

Peter

Best answer by TarikAb

Hi @PKR 

The 32 kHz clock signal cannot be routed on a GPIO to perform such measurement.

Regards

2 replies

mbarg.1
mbarg.1
Senior III
May 19, 2026

There is a divided output  - check you processor data sheet

P
PKRAuthor
Associate
May 19, 2026

I could't finde any hint in the ST67W611M1 module / QCC743 SoC datasheets. Could you provide details? 

T
TarikAbAnswer
Technical Moderator
May 19, 2026

Hi @PKR 

The 32 kHz clock signal cannot be routed on a GPIO to perform such measurement.

Regards

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