kl02 pwm resolution at 48MHz

azamatbagatov — Thu, 05 Feb 2015 11:17:25 GMT

What is the best pwm resolution for the KL02 running at 48MHz? 20ns or 40ns or 80ns? I want to operate it from the internal clock, using the pll to get 48Mhz for the core and then the according max. speed for the pwm peripherals/timers.

Re: kl02 pwm resolution at 48MHz

david_diaz — Mon, 09 Feb 2015 22:21:50 GMT

Hello,

Please note that the KL02 does not count with PLL, I guess you mean FLL.

Theoretically, with the device running at 48 MHz (MCGFLLCLK as a source clock) the best PWM resolution would be 41.6 ns.

When the TPM is set as PWM, the minimum value for the TPMx_MOD is 2 and as a consequence, the PWM frequency is 24 MHz or 41.6 ns.

If you set your device as mentioned before, please note the General switching specifications in datasheet from the following link:

http://www.freescale.com/files/32bit/doc/data_sheet/KL02P20M48SF0.pdf

Hope this information will be useful for you. :smileyhappy:

Have a great day.

Best Regards,

David Diaz.

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kl02 pwm resolution at 48MHz

Re: kl02 pwm resolution at 48MHz