AWR1843AOPEVM: PWM frequency range that can be generated using AWR1843

ilanchezhian Thingalkodi

Part Number: AWR1843AOPEVM
Other Parts Discussed in Thread: AWR1843

AWR1843 has low-power Arm® Cortex®-R4F processor and it has ePWM module. I could not find what

is the PWM frequency range minimum and maximum. Can you let us know some information regarding this.

We want to generate PWM frequency in the range of 0.1Hz to 6.5KHz , in an increment of 10 Hz. Is that something feasible

with AWR1843.

With Regards

Ilan T

8 months ago

0 Josh Wyatt 8 months ago

TI__Guru* 91206 points

Dear ilanchezhian -

Thanks for the post and welcome to E2E!

From looking at other E2E posts on this topic, I confirmed there are no examples in SDK. I did find the calculations on pages 2328 & 2329 of the TRM, and there are some code examples in that section as well.

https://www.ti.com/lit/ug/swru520e/swru520e.pdf

0 Chris Willis 8 months ago in reply to Josh Wyatt

Intellectual 290 points

I do not see anything on those pages that references the PWM frequency max/min and/or available update rate(s). Can you clarify?

0 Josh Wyatt 8 months ago in reply to Chris Willis

TI__Guru* 91206 points

The

The TBCLK definitions are in table 21-15 (page 2338), to be used with the formulas, which are each based on type of waveform to be generated.

0 Chris Willis 8 months ago in reply to Josh Wyatt

Intellectual 290 points

Thank you for your help.

Kindly fill in the table below

AWR1843 PWM Specifications
Maximum Output Frequency		[Hz]
Minimum Output Frequency		[Hz]
Maximum Output Update Rate*		[ms]
Minimum Output Update Rate*		[ms]
*Interval that the output Frequency can be changed

0 Chris Willis 8 months ago in reply to Chris Willis

Intellectual 290 points

0 Josh Wyatt 8 months ago in reply to Chris Willis

TI__Guru* 91206 points

Chris - I talked to Adrian and he responded on this thread - https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/1338520/awr1843aop-mw-power-and-gpio-variable-frequency-question/5112288#5112288

closing this one.

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AWR1843AOPEVM: PWM frequency range that can be generated using AWR1843