Selecting Right value of PSC and ARR values for timer

Thread Starter

Vindhyachal Takniki

Joined Nov 3, 2014
I am using TIM3 of Stm32f407ve MCU.
CPU is running at 168Mhz and clock to TIM3 is 84Mhz

Need to select right values of PSC and ARR for accurate timing.
is this correct assumption?

Time_us = ( (psc+1)*(arr+1) ) / 84Mhz ??