@@ -53,6 +53,10 @@ For additional information on pin layout, refer to [pins_arduino.c](pins_arduino
| 23 (A6) | -- | | On-chip reference voltage ADC, default controlled by RT-Thread's ADC device framework adc1 |
| 24 (A7) | -- | | On-chip temperature sensor ADC, default controlled by RT-Thread's ADC device framework adc1 |
> Notice:
>
> 1. Don't use a same hardware timer to drive PWM (analogRead) and servos at same time, because hardware timers can only generate a same frequency for 4 PWM channels. Otherwise, it could cause a failure when drive servos.