STM8AF6226UAY datasheet by STMicroelectronics

STM8AF6226UAY Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that can be used with the internal oscillator?
  The maximum clock frequency that can be used with the internal oscillator is 16 MHz, but it's recommended to use a maximum of 14 MHz to ensure stability and accuracy.
• How do I configure the watchdog timer to reset the MCU in case of a fault?
  To configure the watchdog timer, you need to set the WDP bits in the WAFR register to select the timeout period, and then enable the watchdog timer by setting the WDGA bit in the WAFR register. You can also use the IWDG (Independent Watchdog) to reset the MCU in case of a fault.
• What is the maximum current that can be sourced or sunk by the GPIO pins?
  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 to ensure reliable operation and prevent overheating.
• How do I use the UART in asynchronous mode?
  To use the UART in asynchronous mode, you need to set the M bit in the USART_CR2 register to 0, and then configure the baud rate, word length, and stop bits using the USART_BRR, USART_CR1, and USART_CR2 registers.
• What is the purpose of the BOOT0 pin, and how do I use it?
  The BOOT0 pin is used to select the boot mode of the MCU. When BOOT0 is low, the MCU boots from the internal Flash memory. When BOOT0 is high, the MCU boots from the external memory or the USART interface. You can use the BOOT0 pin to implement a bootloader or to load firmware from an external source.