Overview
The STM32WB55RGV7TR is a multiprotocol wireless microcontroller from STMicroelectronics, designed for ultra-low-power and high-performance applications. It integrates a powerful Arm® Cortex®-M4 32-bit RISC core with a Floating Point Unit (FPU) and a dedicated Arm® Cortex®-M0+ for real-time low-layer operations. This device supports Bluetooth® 5.4, IEEE 802.15.4-2011, Thread 1.3, and Zigbee® 3.0, making it versatile for various wireless communication needs.
The STM32WB55RGV7TR is optimized for low-power consumption, featuring multiple power-saving modes and a comprehensive set of peripherals, including high-speed memories, advanced communication interfaces, and rich analog peripherals.
Key Specifications
| Parameter | Specification |
|---|---|
| Processors | Arm® Cortex®-M4 with FPU, Arm® Cortex®-M0+ |
| Operating Frequency | Up to 64 MHz |
| Flash Memory | Up to 1 Mbyte with sector protection (PCROP) |
| SRAM | Up to 256 KB, including 64 KB with hardware parity check |
| Backup Registers | 20x 32-bit |
| Radio Frequency | 2.4 GHz, supporting Bluetooth® 5.4 and IEEE 802.15.4-2011 |
| ADC | 12-bit, 4.26 Msps, up to 16-bit with hardware oversampling |
| Comparators | 2x ultra-low-power |
| Timers | 1x 32-bit, 5x 16-bit |
| Communication Interfaces | USART, LPUART, 2x SPI, 2x I2C, SAI, USB 2.0 FS |
| Power Supply | 1.71 to 3.6 V |
| Operating Temperature | -40 to +105 °C |
| Power Consumption | 13 nA shutdown mode, 2.1 µA Stop mode + RTC + 256 KB RAM |
Key Features
- Multiprotocol Radio: Supports Bluetooth® 5.4, IEEE 802.15.4-2011, Thread 1.3, and Zigbee® 3.0.
- Dual-Core Architecture: Arm® Cortex®-M4 with FPU and Arm® Cortex®-M0+ for real-time operations.
- Low Power Consumption: Multiple power-saving modes, including 13 nA shutdown mode and 2.1 µA Stop mode + RTC + 256 KB RAM.
- High-Speed Memories: Up to 1 Mbyte of flash memory and up to 256 KB of SRAM.
- Advanced Communication Interfaces: USART, LPUART, SPI, I2C, SAI, and USB 2.0 FS.
- Rich Analog Peripherals: 12-bit ADC, ultra-low-power comparators, and accurate reference voltage generator.
- Security Features: AES-256 encryption, PKA, RNG, and customer key storage.
- Capacitive Sensing and LCD Driver: Up to 18 capacitive sensing channels and integrated LCD driver.
Applications
- IoT Devices: Ideal for Internet of Things applications requiring wireless connectivity and low power consumption.
- Smart Home Devices: Suitable for smart home devices that need Bluetooth, Zigbee, or Thread connectivity.
- Industrial Automation: Used in industrial automation for wireless communication and control.
- Wearables and Health Devices: Perfect for wearables and health devices that require low power and wireless connectivity.
- Automotive Systems: Can be used in automotive systems for various wireless communication needs.
Q & A
- What are the main processors used in the STM32WB55RGV7TR?
The device uses an Arm® Cortex®-M4 with FPU and a dedicated Arm® Cortex®-M0+ for real-time operations.
- What wireless protocols does the STM32WB55RGV7TR support?
It supports Bluetooth® 5.4, IEEE 802.15.4-2011, Thread 1.3, and Zigbee® 3.0.
- What is the operating frequency of the STM32WB55RGV7TR?
The device operates at a frequency of up to 64 MHz.
- How much flash and SRAM memory does the STM32WB55RGV7TR have?
It has up to 1 Mbyte of flash memory and up to 256 KB of SRAM.
- What are the power consumption modes of the STM32WB55RGV7TR?
The device features multiple power-saving modes, including 13 nA shutdown mode and 2.1 µA Stop mode + RTC + 256 KB RAM.
- Does the STM32WB55RGV7TR support over-the-air updates?
Yes, it supports over-the-air (OTA) updates for the radio stack.
- What security features are available on the STM32WB55RGV7TR?
The device includes AES-256 encryption, PKA, RNG, and customer key storage.
- What is the operating temperature range of the STM32WB55RGV7TR?
The device operates in the -40 to +105 °C temperature range.
- Does the STM32WB55RGV7TR have any specific power supply requirements?
Yes, it operates from a 1.71 to 3.6 V power supply.
- What are some of the key peripherals available on the STM32WB55RGV7TR?
The device features a 12-bit ADC, ultra-low-power comparators, USART, LPUART, SPI, I2C, SAI, and USB 2.0 FS.
