Slew Rate control for S32k146

[Karthik21]

Hello,

We are using S32k146 (64 LQFP).

We are using the FTM0 module to generate output PWM which is fed to FET drivers, and wish to control the slew rate of the PWM waveform.

Could you pls tell which registers are to be used for slew rate?

In reference manual, we were only able to find the drive strength bit but this has no impact on the slew rate.

There is no information on the SRE bit anywhere in the reference manual or datasheet.

[PetrS · Accepted solution]

Hi,

there is just DSE bit in PORT_PCRn register. It has no effect on normal GPIO pad types, it has effect for GPIO-HD and GPIO-FAST pad types. See DC and AC specifications of the DS for more info on DSE effect. The IO Signal Description Input Multiplexing sheet(s) attached with the RM specifies pad type for each port pin.

BR, Petr