short pulse PWM

Gary Reichlinger

Can the PWM on the Delfino run at full clock speed? In other words is it possible to output a 3.3 ns pulse?

0 Igor Gorbachev over 12 years ago

Guru 20525 points

Hello Gary!

1 (1/150MHz)/2 = 6.(6)/2 =3.(3) ns

If I understand 20 ns is the timing limit of GPIO.

Regards,

Igor

0 cb1 over 12 years ago in reply to Igor Gorbachev

Guru 47900 points

Chart included (above) does not reveal the 150MHz reference. (as I read it)

From that chart - doubt that your desired PWM output pulse can drop below 20nS. (I have only top 2 posts here as reference)

0 Gautam Iyer over 12 years ago

Guru 192875 points

As the above two Gurus have suggested, for PWM, 20ns is the lower limit and cannot achieve any further.

Regards,

Gautam

0 Brett Larimore over 12 years ago in reply to Gautam Iyer

Gary,

Note that the F2833x's HRPWM module will allow you to obtain up to 150ps resolution on PWMxA.

Thank you,
Brett

0 Igor Gorbachev over 12 years ago in reply to Brett Larimore

Guru 20525 points

Hello Brett!

Could you please comment this thread http://e2e.ti.com/support/microcontrollers/c2000/f/171/t/283739.aspx. There is some contradiction about XDS100 drivers and CCS.

Thanks,

Regard,

Igor

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