The compact boards are controlled and powered conveniently through a USB connection. An ST-LINK debugger/programmer is integrated, which saves using an external debug probe and allows simple drag-and-drop Flash programming. Arduino Nano pins simplify functional expansion using off-the-shelf shields and let users connect with open-source hardware communities. The boards are supported by major development toolchains including IAR Embedded Workbench for STM8 and Cosmic CXSTM8.
STM8 MCUs feature a high-performing 8-bit core, generous on-chip memory including up to 128Kbyte of Flash, and state-of-the-art peripherals shared with the STM32 MCU family such as timers, analog peripherals, CAN2.0B, and digital interfaces.
STMicroelectronics - www.st.com