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DK3
Associate
November 29, 2024
Question

I2C Timing Configration

  • November 29, 2024
  • 2 replies
  • 550 views

Hi,

Please tell me about I2C timing configration.

I use Nucleo-L552ZE-Q.

I set up the I2C as shown in the picture following the reference manual(RM0438, Table 326).

The fi2cclk is 48MHz.

115840.jpg

 

But SCL cycle is very slow.

115937.jpg

How can I set the SCL cycle to 1000 kHz ?

Best regards.

 

 

This topic has been closed for replies.

2 replies

Techn
Senior III
December 11, 2024

Please review your clock configuration to ascertain that the peripheral clock is correct.  If the crystal is not oscillating, it may swich back to internal.

Techn_0-1733926335757.png

 

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DK3Author
Associate
December 16, 2024

Thank you for your reply.

I checked my clock configration.

I don't use external clock.

Please let me know if there is something that needs to be changed.

DK3_0-1734311035432.png

Best regards.

 

 

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