S32K14x frequency requirement

[Mohit_Manvar]

Hello experts,

I am using the S32K342EVB board. In which I am using FTM_PWM for PWM output generation. My Core frequency is 48 Mhz.

I want 6.144MHz frequency but getting 6.87MHz.

below is reference of configuration.

Help me to get required frequency.

[VaneB]

Hi @Mohit_Manvar 

Could you share your clock configurations and an image of your PWM showing the frequency? 

B.R.

VaneB

[Mohit_Manvar]

Hi @VaneB 

please find screenshots below:

Clock Configuration

Frequency snapshot

Note: I am using S32 design studio for developing pwm freq.

peripheral -> FTM_PWM

[VaneB]

Hi @Mohit_Manvar 

If you decrease the expected frequency, it has the same behavior? 

Also, how are you measuring the signal? 

[Mohit_Manvar]

Hello @VaneB,

Yes, I'm facing same issue on decreasing frequency.

I'm not getting exact frequency as per input.

I'm measuring output via oscilloscope by connecting on Headers of eval board.

[VaneB]

Hi @Mohit_Manvar 

Could you share images of your tests?