STM8S103F3P6 Minimum System Development Board
Step up from standard 8-bit architectures with the ultra-efficient STM8S103F3P6 Minimum System Development Board. Built around STMicroelectronics’ powerful STM8S core, this micro-sized development board is designed for high-reliability industrial automation, consumer electronics prototyping, and ultra-low-budget embedded systems.
Despite its tiny footprint, this board operates at a fast 16 MHz clock speed and delivers advanced hardware peripherals, making it a highly robust and cost-effective alternative to traditional 8-bit entry-level microcontrollers.
Key Features
High-Performance STM8S Core: Driven by an advanced 16 MHz 8-bit core with Harvard architecture and a 3-stage pipeline, maximizing processing efficiency.
Minimalist & Breadboard-Friendly: The dual-row layout breaks out all available GPIOs to standard 0.1-inch spacing header pads, fitting perfectly on standard breadboards or custom PCBs.
Onboard Power Flexibilities: Equipped with a standard Micro-USB port for easy 5V power sourcing, alongside a native 3.3V low-dropout (LDO) regulator to safely power 3.3V sensors.
Dedicated SWIM Debug Interface: Features a 4-pin Single Wire Interface Module (SWIM) connector for high-speed firmware flashing and real-time in-circuit debugging using an ST-LINK V2.
Essential Prototyping Tools: Includes an onboard User LED (connected to pin PD3), a dedicated tactile Reset button, and a Power Indicator LED for instant hardware verification.
Technical Specifications
Feature | Specification |
Core Microcontroller | STM8S103F3P6 |
Core Architecture | 8-Bit STM8 Core (16 MHz clock speed) |
Flash Memory | 8 KB |
RAM / EEPROM | 1 KB High-Speed SRAM / 640 Bytes True Data EEPROM |
Operating Voltage | 3.3V or 5V (Onboard Micro-USB or header input) |
Digital I/O Pins | 16 GPIOs (High-sink outputs up to 20 mA) |
Analog-to-Digital Converter | 4-Channel, 10-bit ADC |
Hardware Timers | 1x 16-bit Advanced Control, 1x 16-bit General Purpose, 1x 8-bit Basic |
Communication Protocols | 1x UART, 1x SPI (up to 8 Mbit/s), 1x I2C (up to 400 kbit/s) |
Programming Environment | IAR EWSTM8, STVD, Cosmic C, or open-source Arduino IDE STM8 variant |
Hardware Layout & Pin Map
The board is laid out cleanly to give developers instant access to the controller’s core components:
SWIM Pinout (Programming Header): Configured with standard TVCC, SWIM, GND, and RST pins along the edge for flawless, direct alignment with an ST-LINK V2 programmer.
High-Sink I/O Ports: The GPIOs (Port A, B, C, and D) feature strong output capabilities, allowing them to directly drive low-power indicator lamps, optocouplers, or small logic relays without burning out the silicon.
Dual Power Rails: The breakout rows expose both 5V and 3.3V supply lines simultaneously, simplifying sensor matrix power distribution.
Common Applications
Industrial Control Systems: Excellent for low-level automation, signal conditioning, machine monitoring, and logic switching.
Smart Appliances: Ideal for small consumer electronics, motor speed controllers, and smart kitchen appliances.
Cost-Sensitive Mass Production: Perfect for engineers building proof-of-concepts meant to be scaled down to ultra-cheap, high-volume production chips.
Hardware Compilation Tip: To upload code to this board, you will need an external ST-LINK V2 programmer. For developers who prefer the comfort of standard syntax, you can program this board using the sduino / STM8 Arduino IDE core, allowing you to write your custom firmware using the familiar Arduino layout.
Package Includes:
1 x STM8S103F3P6 Minimum System Development Board