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June 1, 2020 16:03
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ESP32 LEDC Maximum frequency by resolution
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| Per this forum post: https://esp32.com/viewtopic.php?t=6701 | |
| The way to calculate max PWM frequency is integer (log 2 (LEDC_APB_CLK / frequency)) | |
| With a LEDC_APB_CLK == 80MHz, these are the following maximum values, in Hz: | |
| LEDC_TIMER_1_BIT, 40000000 | |
| LEDC_TIMER_2_BIT, 20000000 | |
| LEDC_TIMER_3_BIT, 10000000 | |
| LEDC_TIMER_4_BIT, 5000000 | |
| LEDC_TIMER_5_BIT, 2500000 | |
| LEDC_TIMER_6_BIT, 1250000 | |
| LEDC_TIMER_7_BIT, 625000 | |
| LEDC_TIMER_8_BIT, 312500 | |
| LEDC_TIMER_9_BIT, 156250 | |
| LEDC_TIMER_10_BIT, 78125 | |
| LEDC_TIMER_11_BIT, 39062 | |
| LEDC_TIMER_12_BIT, 19531 | |
| LEDC_TIMER_13_BIT, 9765 | |
| LEDC_TIMER_14_BIT, 4882 | |
| LEDC_TIMER_15_BIT, 2441 | |
| LEDC_TIMER_16_BIT, 1220 | |
| LEDC_TIMER_17_BIT, 610 | |
| LEDC_TIMER_18_BIT, 305 | |
| LEDC_TIMER_19_BIT, 152 | |
| LEDC_TIMER_20_BIT, 76 |
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