The STMicroelectronics STM32WB55xx and STM32WB35xx multiprotocol wireless and ultra-low-power devices embed a powerful and ultra-low-power radio compliant with the Bluetooth® Low Energy SIG specification v5.0 and with IEEE 802.15.4-2011. They contain a dedicated Arm Cortex -M0+ for performing all the real-time low layer operation. The devices are designed to be extremely low-power and are based on the high-performance Arm® Cortex-M4 32-bit RISC core operating at a frequency of up to 64 MHz. This core features a Floating point unit (FPU) single precision that supports all Arm single-precision data-processing instructions and data types. It also implements a full set of DSP instructions and a memory protection unit that enhances application security.

Includes ST state-of-the-art patented technology
Radio 2.4 GHz
RF transceiver supporting Bluetooth 5 specification, IEEE 802.15.4-2011 PHY and MAC, supporting Thread and Zigbee 3.0
RX sensitivity: -96 dBm for Bluetooth Low Energy at 1 Mbps, -100 dBm for 802.15.4
Programmable output power up to +6 dBm with 1 dB steps
Integrated balun to reduce BOM
Support for 2 Mbps
Dedicated Arm 32-bit Cortex M0+ CPU for real-time Radio la
Support for external PA
Available integrated passive device (IPD) companion chip for optimized matching solution
Core available Arm 32-bit Cortex-M4 CPU with FPU, adaptive real-time accelerator (ART Accelerator) allowing 0-wait-state execution from Flash memory, frequency up to 64 MHz, MPU, 80 DMIPS and DSP instructions
High efficiency embedded SMPS step-down converter with intelligent bypass mode
Ultra-safe, low-power BOR (brownout reset) with five selectable thresholds
Ultra-low-power POR/PDR
Programmable voltage detector (PVD)