STM32WB55xx: High-Performance, Ultra-Low-Power Wireless MCU With Bluetooth 5.3 And 802.15.4.pdf

Key Features and Specifications

This datasheet outlines the STM32WB55xx and STM32WB35xx series of 32-bit microcontrollers (MCUs) based on Arm Cortex-M4 cores with floating point unit (FPU). These MCUs are designed for wireless applications, featuring integrated Bluetooth 5.3 and 802.15.4 radio solutions.

Highlights:

Multiprotocol Wireless: Supports both Bluetooth Low Energy (BLE) and IEEE 802.15.4 standards.
Advanced Radio Technology: 2.4 GHz RF transceiver with RX sensitivity down to -96 dBm, programmable output power, and support for advertising extension.
Ultra-Low Power Platform: Operating voltage range of 1.71 to 3.6 V, available in 40°C to 85°C and 105°C temperature ranges. Sleep modes achieving as low as 13 nA current consumption.
Performance: Arm Cortex-M4 CPU with FPU, up to 64 MHz clock speed, 80 DMIPS performance, and DSP instructions.
Memory: Up to 1 MB flash memory, 256 KB SRAM, 20x 32-bit backup registers, and support for OTA (over-the-air) firmware updates.
Analog Peripherals: 12-bit ADC with up to 4.26 MSPS sampling rate, 2x ultra-low-power comparators, and accurate voltage references.
System Peripherals: Includes IPCC (Inter-Processor Communication Controller), DMA controllers, USART, LPUART, SPI, I2C, SAI, USB, touch sensing controller, LCD support, timers, and watchdog mechanisms.
Security & Safety: Secure firmware installation, hardware encryption (AES, RSA, ECC), true random number generator (RNG), sector protection against R/W operations, and die information for unique ID generation.

Target Applications:

The STM32WB55xx and STM32WB35xx are suitable for a wide range of wireless applications including:

Smart home devices
Wearable technology
Industrial IoT sensors
Wireless control systems