The code isn’t quite there yet, but [ZiB] has proven a software-based USB implementation on the STM8 is possible. All the code is available for download (comments in Russian) and a video demoing ...

Even after they have been snapped off, there is a DIL socket on-board for re-programming. Each chip has a 16MHz STM8 core with 8kbyte of flash. System-control features include watchdog, clock control, ...

There is also a Single-Wire Interface Module (SWIM) for programming and debugging. It is an 8-bit STM8 Core device which is designed for high code efficiency. It contains six internal registers, 20 ...

Well, honestly, [Michael Mayer’s] STM8 Arduino (called Sduino) isn’t actually much to do with the Arduino, except in spirit. The STM8 is an 8-bit processor. It is dirt cheap and has som… ...