matherp Guru
 Joined: 11/12/2012 Location: United KingdomPosts: 9568 |
Posted: 07:22pm 06 Dec 2022 |
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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 |