STMicroelectronics STM8-SO8-DISCO

Overview

STM8-SO8-DISCO from STMicroelectronics is a Discovery kit enabling rapid evaluation and development for three STM8 microcontrollers in SO8 packages: STM8S001J3M3 (8 KB Flash, 1 KB RAM, 128 B EEPROM), STM8L001J3M3 (8 KB Flash, 1.5 KB RAM, up to 2 KB EEPROM), and STM8L050J3M3 (8 KB Flash, 1 KB RAM, 256 B EEPROM). It integrates on-board ST-LINK/V2 debugger/programmer, user LED, push-button, and breakable SO8-to-DIL8 modules for prototyping.

For engineers reviewing the STM8-SO8-DISCO datasheet, STM8-SO8-DISCO pinout, STM8-SO8-DISCO application, or STM8-SO8-DISCO equivalent, this kit supports rapid MCU validation, SWIM-based programming of embedded or external targets, IDE interoperability (IAR, Cosmic, Raisonance, iSYSTEM), and standalone peripheral demonstration via preloaded firmware.

Technical Context

The kit provides hardware abstraction for three distinct STM8 Value Line MCUs-two ultra-low-power (STM8L001J3M3, STM8L050J3M3) and one general-purpose (STM8S001J3M3)-all sharing SO8 packaging but differing in RAM size, EEPROM capacity, and power architecture. Each module connects via DIL8 socket and SWIM interface.

ST-LINK/V2 implements full debug and programming functionality over USB, supporting SWIM protocol at up to 4 MHz, with voltage regulation for target VDD (1.65–3.6 V for STM8L, 2.95–5.5 V for STM8S), and configurable reset control. The board operates directly from USB bus power without external supply.

Key Specifications

Availability

STM8-SO8-DISCO is available at Aetrix Electronics and suitable for embedded education, low-power sensor node prototyping, and STM8 migration validation requiring stable component supply and consistent evaluation platform availability.

Supply support for STM8-SO8-DISCO includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, analog ICs, power devices, and sensors for industrial, automotive, and consumer applications.

This kit belongs to ST's Discovery ecosystem - purpose-built to accelerate learning, evaluation, and early-stage development of STM8 microcontrollers with minimal setup and maximum accessibility.

FAQ

Does STM8-SO8-DISCO support programming external STM8 targets?

Yes. The board exposes a SWIM connector (CN2) compatible with ST-LINK/V2 protocol, allowing it to program and debug external STM8 devices - including SO8-packaged MCUs - using standard SWIM cables and ST's STM8CubeProgrammer software.

Can all three included MCUs run the same demonstration firmware?

No. The preloaded demo firmware is specifically built for STM8S001J3M3. While source code is provided for porting, differences in peripheral registers, clock trees, and memory maps require manual adaptation for STM8L001J3M3 and STM8L050J3M3.

Is a separate power supply required for operation?

No. The board draws power exclusively from the USB host port (5 V), regulating down to 3.3 V for logic and configurable VDD output (1.65–5.5 V) for target MCU operation - no external power supply or batteries are needed.

What operating systems are supported for ST-LINK/V2 drivers?

Officially supported OS versions include Windows 7, 8, and 10. ST provides signed USB drivers for these platforms. Linux and macOS users can access SWIM functionality via open-source tools like stm8flash, though official ST toolchain integration is Windows-only.