The maximum clock frequency that can be used with the internal oscillator is 12 MHz, but it's recommended to use a crystal oscillator for frequencies above 4 MHz for better accuracy and stability.
The BOD feature is enabled by default, but you can configure it by writing to the BOD control register (BODCON). You can set the BOD voltage threshold and enable or disable the BOD interrupt.
The maximum current that can be sourced or sunk by the GPIO pins is 20 mA, but it's recommended to limit the current to 10 mA or less to ensure reliable operation and prevent overheating.
To use the UART with a higher baud rate than 115200 bps, you need to use the fractional baud rate generator and configure the UART clock divider accordingly. You can find the calculation formula in the datasheet.
No, the ADC cannot be used in sleep mode. The ADC requires the CPU to be active to perform conversions, so you need to wake up the device from sleep mode to use the ADC.
