STMicroelectronics' STM32WB wireless MCU is a dual-core, multi-protocol 2.4 GHz MCU system-on-chip (SoC) that supports Bluetooth® 5 and IEEE 802.15.4 communication protocols in single and concurrent modes to cover a wide spectrum of IoT application needs. Based on the ultra-low-power STM32L4 MCU, the STM32WB is designed to reduce development time and cost, extend application battery life, and inspire innovation thanks to its rich and flexible peripheral set.

The dual-core architecture of the STM32WB enables real-time execution of both application code and network-processing tasks resulting in an outstanding end-user experience while taking advantage of the flexibility to optimize system resources, power consumption, and material costs.

The Arm Cortex-M0+ network-processing controller contains protocol stacks including STMicroelectronics' OpenThread stack, Zigbee 3.0 stack, and the Bluetooth 5 stack with mesh 1.0 support, which comes with multiple profiles. The radio’s generic HCI and media access control (AC) layer gives users the flexibility to use BLE stack or other IEEE 802.15.4 proprietary stacks available in the STM32CubeWB FW package.

State-of-the-art protection features that are essential to protect user data and help protect intellectual property in smart connected devices include embedded customer-key storage, an elliptic curve encryption engine for public key authentication (PKA), and hardware support for AES 256-bit cryptography. Users can future-proof products in the field, leveraging secure firmware updates (SFU) and support for root secure service (RSS) to authenticate over-the-air (OTA) updates.

The STM32WB devices are offered in a 48-pin UQFN, 68-pin VQFN, 100-pin WLCSP, and 129-pin BGA with up to 72 general-purpose I/Os (GPIO). All packages are ECOPACK2® compliant.