STM32WB Dual-Core Multi-Protocol Wireless MCUs STMicroelectronics STM32WB Dual-Core Multi-Protocol Wireless Microcontrollers (MCU) is an ultra-low-power 2.4GHz MCU System-on-Chip (SoC). The STMicroelectronics STM32WB supports BLUETOOTH®/BLE 5.0 and IEEE 802.15.4 communication protocols (in Single and Concurrent modes) covering a wide spectrum of IoT application needs. Based on the ultra-low-power STM32L4 MCU, the STM32WB Wireless MCU is designed to reduce development time and cost, extend application battery life, and inspire innovation thanks to its rich and flexible peripheral set.