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CC3200-LAUNCHXL: How high can the frequency of PWM be?

Yuankun Zhao
Prodigy 10 points
Part Number: CC3200-LAUNCHXL
Other Parts Discussed in Thread: CC3200

Hello,

I am curious about the PWM module on CC3200. In my application, I need a 50 kHz PWM signal with duty ratio is 50%. So, can CC3200 generate the PWM signal with such high frequency?

Thanks,

Yuankun

  • 0
    TI__Mastermind 40965 points
    Hi Yuankun,

    On the CC3200, PWM signals are generated by the hardware timer modules. These timers are clocked off of the 80MHz fast clock and so a 50kHz PWM is definitely very possible. I suggest you take a look at the pwm example in the CC3200 for a practical example of how the pwm peripheral works on the CC3200. In the example there is some explanation as to how to get your desired frequency/duty cycle, and trying that out should allow for a good understanding of how to manipulate the pwm registers to get to your 50kHz 50% duty cycle signal. You can also take a look at section 9.3.2.4 of the TRM for documentation on the PWM timers:
    http://www.ti.com/lit/swru367/

    Let me know if you need more clarification or if you have further questions.

    Regards,
    Michael