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Fast PWM

Topic last updated 13 Aug 2011, by Andrew Harpin. 2 replies
John Harris
10 Aug 2011

What is the shortest possible PWM period that will allow 16-bit actual duty cycle resolution?

Martin Gyurkó
12 Aug 2011

Yes, that's what i also need. OK, i need only 14 bits, but from the handbook i don't see it. Anyone, who knows?

Andrew Harpin
13 Aug 2011

The PWM frequency is set by a number of factors, but primarily the peripheral clock, but it can operate from an external clock.

I would suggest reading the LPC17xx user manual for details on the PWM module as there is too much to print here.

If you want to know the settings from the mbed library, write a program to print out the register settings.