Overview
The STM32WB55RGV6TR is a multiprotocol wireless and ultra-low-power microcontroller from STMicroelectronics. It is part of the STM32WB55xx series, which integrates a powerful Arm® Cortex®-M4 32-bit RISC core and a dedicated Arm® Cortex®-M0+ for real-time low-layer operations. This device supports Bluetooth® 5.4 and IEEE 802.15.4-2011, making it suitable for a wide range of wireless applications. The STM32WB55RGV6TR is designed for low-power consumption and features advanced security and communication interfaces.
Key Specifications
| Parameter | Specification |
|---|---|
| Microcontroller Core | Arm® Cortex®-M4 32-bit RISC core with FPU, up to 64 MHz |
| Dedicated Radio Core | Arm® Cortex®-M0+ for real-time Radio layer |
| Memory | Up to 1 MB flash memory, up to 256 KB SRAM |
| Radio Frequency | 2.4 GHz RF transceiver supporting Bluetooth® 5.4 and IEEE 802.15.4-2011 |
| RX Sensitivity | -96 dBm (Bluetooth® Low Energy at 1 Mbps), -100 dBm (802.15.4) |
| Output Power | Programmable up to +6 dBm with 1 dB steps |
| Power Supply | 1.71 to 3.6 V |
| Temperature Range | -40 °C to +105 °C (+125 °C junction) |
| Package | VFQFPN 68 8x8x1.0 mm |
| Low-Power Modes | 13 nA shutdown mode, 600 nA Standby mode + RTC + 32 KB RAM, 2.1 µA Stop mode + RTC + 256 KB RAM |
Key Features
- Support for Bluetooth® 5.4 and IEEE 802.15.4-2011, including Thread 1.3 and Zigbee® 3.0
- Integrated balun to reduce BOM
- Accurate RSSI to enable power control
- Ultra-low-power platform with various power-saving modes
- High efficiency embedded SMPS step-down converter with intelligent bypass mode
- Rich analog peripherals including 12-bit ADC, ultra-low-power comparators, and accurate reference voltage generator
- Advanced communication interfaces: USART, LPUART, I2C, SPI, SAI, USB 2.0 FS device
- Security features: AES encryption engines, PKA, RNG, customer key storage, and secure firmware installation
- Touch sensing controller with up to 18 capacitive sensing channels and integrated LCD driver
- Multiple timers and watchdogs for robust system management
Applications
- Wireless sensor networks and IoT devices
- Smart home and building automation
- Industrial automation and control systems
- Wearable devices and health monitoring systems
- Low-power wireless communication in various consumer and industrial applications
Q & A
- What is the primary microcontroller core in the STM32WB55RGV6TR?
The primary microcontroller core is the Arm® Cortex®-M4 32-bit RISC core with FPU, operating up to 64 MHz.
- What wireless protocols does the STM32WB55RGV6TR support?
The device supports Bluetooth® 5.4 and IEEE 802.15.4-2011, including Thread 1.3 and Zigbee® 3.0.
- What is the memory capacity of the STM32WB55RGV6TR?
The device has up to 1 MB of flash memory and up to 256 KB of SRAM.
- What are the power consumption characteristics of the STM32WB55RGV6TR?
The device features low-power modes including 13 nA shutdown mode, 600 nA Standby mode + RTC + 32 KB RAM, and 2.1 µA Stop mode + RTC + 256 KB RAM.
- What security features are available on the STM32WB55RGV6TR?
The device includes AES encryption engines, PKA, RNG, customer key storage, and secure firmware installation.
- What analog peripherals are included in the STM32WB55RGV6TR?
The device features a 12-bit ADC, ultra-low-power comparators, and an accurate reference voltage generator.
- What communication interfaces are available on the STM32WB55RGV6TR?
The device includes USART, LPUART, I2C, SPI, SAI, and a USB 2.0 FS device.
- What is the operating temperature range of the STM32WB55RGV6TR?
The operating temperature range is -40 °C to +105 °C (+125 °C junction).
- What is the package type of the STM32WB55RGV6TR?
The device is available in a VFQFPN 68 8x8x1.0 mm package.
- Does the STM32WB55RGV6TR support over-the-air updates?
Yes, the device supports OTA (over the air) Bluetooth® Low Energy and 802.15.4 updates.
