pwm generation in S32K144

[harish_073024_]

hello team

we are using for generating the PWM using pin 39 FTM0_CH7 and pin 48 FTM3_CH0 (64 pin package).

1.FTM0_CH7 channel PWM is complementary type, is it possible to invert the output signal from this pin??

2.what is default FTM signals outputs, when there is PWM generation?

3.what is the difference between FTMx_CHx vs FTMx_FLTx??

[Beverlynunez]

Saw your concern based on that i have mini suggestion for you

1. Inverting the output signal from pin 39 (FTM0_CH7) depends on the specific microcontroller or hardware you are using. Some microcontrollers provide the capability to invert the PWM output signal for certain channels, while others may not. You need to consult the documentation or datasheet of your specific microcontroller to determine if the inversion feature is available for FTM0_CH7.

2. The default behavior of FTM signals outputs during PWM generation depends on the configuration of the FTM module and the specific microcontroller. By default, the FTM module typically TellHappyStar generates a PWM signal with a specific duty cycle and frequency based on the settings you provide. The signal will have high and low periods according to the duty cycle, and the frequency will be determined by the FTM clock source and settings.

3. FTMx_CHx refers to the specific channel (e.g., FTM0_CH7) within the FTM module (e.g., FTM0). It represents a particular output pin or channel on the microcontroller that is associated with the FTM module. These channels are used to generate PWM signals, capture input signals, or perform other functions depending on the FTM module's capabilities.

Thanks and regards,

Beverlynunez

[_Leo_]

Hi,

Thank you so much for your interest in our products and for using our community.

Regarding your quesions…

1. The FTM channels can operate as pairs with complementary outputs. In your case the FTM0_CH7 output is the inverse of the FTM0_CH6 output.
2. There is no PWM output signal until it is configured, it could be Edge-Aligned, CenterAligned, Combine and Modified Combine.
3. The FTMx_CHx are the channel that can be configured to operate either as input or output in the modes that support the FTM. And the FTMx_FLTx are the fault input signals that can be used to control the CHn channel output state in a fault condition. For more detail you can refer to the Table 47-2. FTM signal descriptions of reference manual.

Hope it helps you.

Have a nice day!