The maximum clock frequency that can be used with the internal oscillator is 16 MHz, but it's recommended to use a clock frequency of 14 MHz or lower to ensure reliable operation.
To configure the WDT to reset the microcontroller, you need to set the WDT prescaler to a non-zero value and enable the WDT reset. This can be done by writing to the WDT control register (WDT_CR) and setting the WDTS bit.
The bootloader in the STM8AF6286TAY is used to load the application code into the microcontroller's flash memory. It can be used to update the firmware of the device in the field or during production.
To use the UART in asynchronous mode, you need to configure the UART control register (UART_CR1) to enable the UART, set the baud rate, and configure the word length and stop bits. You also need to enable the UART transmitter and receiver by setting the TE and RE bits in the UART_CR1 register.
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.
STM8AF6286TAY datasheet
by STMicroelectronics
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