STM32WB5MMG

The STM32WB5MMG is a highly integrated wireless microcontroller from STMicroelectronics, designed for low-power applications requiring dual-mode connectivity. It combines an ARM Cortex-M4 core running at up to 64 MHz with an embedded Bluetooth Low Energy (BLE) 5.3 radio and a full-featured IEEE 802.15.4 transceiver, enabling simultaneous operation of BLE and Thread/Zigbee protocols. This dual-mode capability makes it ideal for IoT devices needing both short-range and mesh networking support. Built on a 130 nm process technology, the device offers a power-efficient architecture with multiple low-power modes, including Stop 2, Standby, and Shutdown, allowing extended battery life in portable and wearable applications. The memory configuration includes 1 MB of flash memory and 256 KB of SRAM, providing ample space for firmware, data storage, and real-time operations. Integrated peripherals such as timers, ADCs, DACs, and multiple communication interfaces (I²C, SPI, USART, UART) enhance system flexibility and reduce external component count. The STM32WB5MMG features hardware-accelerated cryptographic engines supporting AES-128/256, SHA-2, and PKA (Public Key Accelerator), ensuring robust security for secure boot, secure firmware updates, and data encryption. It also supports secure elements via dedicated I/O pins and integrates a true random number generator (TRNG) for enhanced randomness in cryptographic operations. These features make it suitable for applications demanding high-level security compliance, such as industrial automation, healthcare devices, and smart home systems. Designed for scalability and ease of development, the chip is supported by ST’s comprehensive ecosystem, including STM32CubeMX for configuration, STM32CubeWB for middleware and drivers, and a wide range of evaluation boards like the Discovery kit. Its compact WLCSP72 package reduces board footprint, making it ideal for space-constrained designs. The device operates across a wide voltage range (1.71–3.6 V), ensuring compatibility with various power sources and environmental conditions. Common application areas include connected sensors, asset tracking tags, medical wearables, smart meters, and industrial gateways. Its ability to run complex algorithms while maintaining ultra-low power consumption positions it as a preferred choice for battery-powered IoT nodes requiring long operational lifetimes and reliable wireless communication.