ST STM8S103F3 Breakout Board


Platform ST STM8: The STM8 is an 8-bit microcontroller family by STMicroelectronics an extended variant of the ST7 microcontroller architecture. STM8 microcontrollers are particularly low cost for a full-featured 8-bit microcontroller.

Microcontroller STM8S103F3P6
Frequency 16MHz
Flash 8KB
Vendor ST


Please use stm8sblue ID for board option in “platformio.ini” (Project Configuration File):

platform = ststm8
board = stm8sblue

You can override default ST STM8S103F3 Breakout Board settings per build environment using board_*** option, where *** is a JSON object path from board manifest stm8sblue.json. For example, board_build.mcu, board_build.f_cpu, etc.

platform = ststm8
board = stm8sblue

; change microcontroller
board_build.mcu = stm8s103f3p6

; change MCU frequency
board_build.f_cpu = 16000000L


ST STM8S103F3 Breakout Board supports the next uploading protocols:

  • serial
  • stlinkv2

Default protocol is serial

You can change upload protocol using upload_protocol option:

platform = ststm8
board = stm8sblue

upload_protocol = serial


PIO Unified Debugger currently does not support ST STM8S103F3 Breakout Board board.


Name Description
Arduino Arduino Wiring-based Framework allows writing cross-platform software to control devices attached to a wide range of Arduino boards to create all kinds of creative coding, interactive objects, spaces or physical experiences.
SPL The ST Standard Peripheral Library provides a set of functions for handling the peripherals on the STM32 Cortex-M3 family. The idea is to save the user (the new user, in particular) having to deal directly with the registers.