Overview
The STM32WB55RGV6U is a multiprotocol wireless 32-bit microcontroller from STMicroelectronics, featuring a dual-core architecture with an Arm® Cortex®-M4 core and a dedicated Arm® Cortex®-M0+ core for the real-time radio layer. This device is part of the STM32WB series, known for its ultra-low-power consumption and comprehensive set of peripherals and interfaces. The STM32WB55RGV6U is particularly suited for applications requiring Bluetooth® Low Energy (BLE) and IEEE 802.15.4 wireless communication protocols, including Zigbee®, Thread®, and proprietary protocols.
Key Specifications
| Parameter | Specification |
|---|---|
| Microcontroller Core | Dual-core: Arm® Cortex®-M4 with FPU and Arm® Cortex®-M0+ |
| Flash Memory | Up to 1 Mbyte with sector protection (PCROP) |
| SRAM | Up to 256 KB, including 64 KB with hardware parity check |
| Temperature Range | -40 °C to +105 °C (+125 °C junction) |
| Power Supply | 1.71 to 3.6 V |
| RF Transceiver | 2.4 GHz, supporting Bluetooth® 5.4, IEEE 802.15.4-2011 PHY and MAC |
| ADC | 12-bit, 4.26 Msps, up to 16-bit with hardware oversampling |
| Comparators | 2 ultra-low-power comparators |
| Timers | One 32-bit timer, five 16-bit timers, and two 16-bit low-power timers |
| Communication Interfaces | USART, LPUART, two I2Cs, two SPIs, SAI, USB 2.0 FS, Quad-SPI with XIP |
| Power Modes | Shutdown, Standby, Stop modes with low power consumption (e.g., 13 nA in shutdown mode) |
Key Features
- Dual-core architecture with Arm® Cortex®-M4 and dedicated Arm® Cortex®-M0+ for real-time radio layer
- Ultra-low-power platform with various power-saving modes (shutdown, standby, stop)
- 2.4 GHz RF transceiver supporting Bluetooth® 5.4, IEEE 802.15.4-2011, Zigbee®, and Thread®
- Integrated balun and support for external PA
- Rich analog peripherals including a 12-bit ADC, ultra-low-power comparators, and accurate reference voltage generators
- Comprehensive set of communication interfaces (USART, LPUART, I2C, SPI, SAI, USB 2.0 FS, Quad-SPI)
- Quad-SPI memory interface with execute-in-place (XIP) capability
- OTA (over the air) update for Bluetooth® Low Energy and 802.15.4
- Internal low-power oscillators and high-speed internal oscillators
- Capacitive sensing channels and integrated LCD driver
Applications
- Wireless sensor networks and IoT devices
- Smart home and building automation systems
- Industrial automation and control systems
- Health and fitness wearables
- Smart energy management systems
- Automotive and transportation systems requiring wireless connectivity
Q & A
- What is the core architecture of the STM32WB55RGV6U?
The STM32WB55RGV6U features a dual-core architecture with an Arm® Cortex®-M4 core and a dedicated Arm® Cortex®-M0+ core for the real-time radio layer.
- What wireless communication protocols does the STM32WB55RGV6U support?
The device supports Bluetooth® 5.4, IEEE 802.15.4-2011, Zigbee®, and Thread® protocols.
- What is the memory configuration of the STM32WB55RGV6U?
The device has up to 1 Mbyte of flash memory and up to 256 KB of SRAM.
- What are the power supply and temperature ranges for the STM32WB55RGV6U?
The device operates from a 1.71 to 3.6 V power supply and in a temperature range of -40 °C to +105 °C (+125 °C junction).
- What are the key analog peripherals of the STM32WB55RGV6U?
The device includes a 12-bit ADC, ultra-low-power comparators, and accurate reference voltage generators.
- Does the STM32WB55RGV6U support over-the-air updates?
Yes, the device supports OTA (over the air) updates for Bluetooth® Low Energy and 802.15.4.
- What communication interfaces are available on the STM32WB55RGV6U?
The device features USART, LPUART, I2C, SPI, SAI, USB 2.0 FS, and Quad-SPI interfaces.
- What power-saving modes are available on the STM32WB55RGV6U?
The device offers shutdown, standby, and stop modes with low power consumption.
- Is the STM32WB55RGV6U suitable for industrial applications?
Yes, the device is suitable for industrial automation and control systems due to its robust features and low power consumption.
- Can the STM32WB55RGV6U be used in smart home devices?
Yes, the device is well-suited for smart home and building automation systems due to its wireless communication capabilities and low power consumption.
