Guru
Joined: 11/12/2012
Location: United KingdomPosts: 8682
| Posted: 07:22pm 06 Dec 2022 |
At 378MHz the PWM clock is running at 189MHz which means at c1Mhz there are only 189 clock pulses. The next value down would then be 190 clocks = 994.7 KHz and the next up 1.005MHz. At fast PWM speeds this is the limit of the pulse accuracy and the duty cycle is also affected in the same way