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STMicroelectronics STM32WB30 Series MCU

Multiprotocol wireless 32-bit MCU Arm®-based Cortex®-M4 with FPU, Bluetooth® 5 and 802.15.4 radio solution

The STMicroelectronics STM32WB30 series is an ultra-low-power microcontroller based on the high-performance dual core Arm Cortex-M4 32-bit RISC.

The STM32WB30CE multiprotocol wireless and ultra-low-power MCU embeds a powerful and ultra-low-power radio compliant with the Bluetooth® Low Energy SIG specification v5.0 or with IEEE 802.15.4-2011. The microcontroller contains a dedicated Arm® Cortex® -M0+ for performing all the real-time low layer operation. Both the STM32WB30 and STM32WB50 MCUs 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. The Cortex®-M4 core features a Floating point unit (FPU) single precision that supports all Arm® single-precision data-processing instructions and data types. The STM32WB30/50 also implements a full set of DSP instructions and a memory protection unit (MPU) that enhances application security.

STMicroelectronics STMWB30/50 Key Highlights

Inter-processor communication: Enhanced inter-processor communication is provided by the IPCC with six bidirectional channels. The HSEM provides hardware semaphores used to share common resources between the two processors.

High-speed memories: The MCUs by STMicroelectronics embed high-speed memories (1 Mbyte of Flash memory for STM32WB50xx, 512 Kbytes for STM32WB30xx, 128 Kbytes of SRAM for STM32WB50xx, 96 Kbytes for STM32WB30xx) and an extensive range of enhanced I/Os and peripherals. The STM32WB30/50 both feature several mechanisms for embedded Flash memory and SRAM: readout protection, write protection and proprietary code readout protection. Portions of the memory can be secured for Cortex® -M0+ exclusive access.

Direct data transfer: Communication between memory and peripherals and from memory to memory is supported by seven DMA channels with a full flexible channel mapping by the DMAMUX peripheral.

AES encryption engine: PKA and RNG, which enable lower layer MAC and upper layer cryptography. A customer key storage feature may be used to keep the keys hidden.

Real-time clock: These devices embed a low-power RTC, one advanced 16-bit timer, one general-purpose32-bit timer, two general-purpose 16-bit timers, and two 16-bit low-power timers.

Communication interfaces: The STM32WB30CE and STM32WB50CG feature standard and advanced communication interfaces, namely one USART (ISO 7816, IrDA, Modbus and Smartcard mode), one I2C (SMBus/PMBus), one SPI up to 32 MHz.

Temperature range: The STM32WB30CE and STM32WB50CG operate in the -10 to +85 °C (+105 °C junction) temperature range from a 2.0 to 3.6 V power supply. A comprehensive set of power-saving modes enables the design of low-power applications.

Backup: A VBAT dedicated supply allows the device to back up the LSE 32.768 KHz oscillator, the RTC and the backup registers, thus enabling the STM32WB50CG and STM32WB30CE to supply these functions even if the main VDD is not present through a CR2032-like battery, a Supercap or a small rechargeable battery.

Packages: The STM32WB30CE and STM32WB50CG are available in a 48-pin UFQFPN package.

For the full list of features and specifications of the STM32WB30CE and STM32WB50CG, take a look at the Datasheet.