STM8S103K3B6 datasheet by STMicroelectronics

STM8S103K3B6 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. However, it's recommended to use a clock frequency of up to 12 MHz to ensure reliable operation.
• How do I configure the bootloader to use an external crystal oscillator?
  To configure the bootloader to use an external crystal oscillator, you need to set the BOOT0 pin to '0' and the BOOT1 pin to '1' during the boot process. This will allow the microcontroller to use the external crystal oscillator as the clock source.
• What is the minimum voltage required for the microcontroller to operate correctly?
  The minimum voltage required for the STM8S103K3B6 to operate correctly is 2.95V. However, it's recommended to use a voltage of at least 3.3V to ensure reliable operation.
• How do I enable the watchdog timer?
  To enable the watchdog timer, you need to set the WDTE bit in the WDR register to '1'. You can then configure the watchdog timer period using the WDRL and WDRH registers.
• 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 20mA. However, it's recommended to limit the current to 10mA or less to ensure reliable operation.