I2C Timing Configration

[DK3]

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.

 

But SCL cycle is very slow.

How can I set the SCL cycle to 1000 kHz ?

Best regards.

 

 

[Techn]

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.

 

[DK3]

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.

Best regards.