| style="background: LightCyan" | WB || Link || || || Cortex-M4F, Cortex-M0+ |- | style="background: LightCyan" | WL || Link || || || Cortex-M4, Cortex-M0+ |} ARM Official Documents Other Official ST Community: STM32 MCUs STMicroelectronics GitHub: GitHub STM32 Communities: Primer STM32 USART bus: Article 1, Article 2, Article 3 STM32 SPI bus: Article 1 STM32 ADC: Article 1 STM32 Bit Band Memory: Article 1 Libraries: ARM CMSIS, libopencm3 ARM-based microcontrollers