Overview
The STM32WB55RGV6, produced by STMicroelectronics, is a multiprotocol wireless 32-bit microcontroller based on the Arm® Cortex®-M4 CPU with FPU and a dedicated Arm® 32-bit Cortex®-M0+ CPU for real-time radio layer processing. This device integrates a 2.4 GHz RF transceiver supporting Bluetooth® 5.4, IEEE 802.15.4, Thread 1.3, and Zigbee® 3.0. It is designed for ultra-low-power applications and features a comprehensive set of peripherals and security mechanisms, making it suitable for a wide range of wireless and IoT applications.
Key Specifications
| Parameter | Specification |
|---|---|
| Microcontroller Core | Arm® 32-bit Cortex®-M4 CPU with FPU, 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 |
| Power Supply | 1.71 to 3.6 V |
| Operating Temperature | -40 °C to 85 °C / 105 °C |
| ADC | 12-bit, 4.26 Msps, up to 16-bit with hardware oversampling |
| Comparators | 2x ultra-low-power comparators |
| Timers | 1x 32-bit, 4x 16-bit, 2x ultra-low-power 16-bit timers |
| Communication Interfaces | 1x USART, 1x LPUART, 2x SPI, 2x I2C, 1x SAI, 1x USB 2.0 FS device |
| Radio | 2.4 GHz RF transceiver supporting Bluetooth® 5.4 and IEEE 802.15.4 |
| Security Features | 3x AES encryption engines, PKA, RNG, customer key storage |
| 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
- Ultra-low-power platform with multiple power-saving modes.
- Integrated 2.4 GHz RF transceiver supporting Bluetooth® 5.4, IEEE 802.15.4, Thread 1.3, and Zigbee® 3.0.
- Arm® 32-bit Cortex®-M4 CPU with FPU and adaptive real-time accelerator (ART Accelerator).
- Rich analog peripherals including a 12-bit ADC, ultra-low-power comparators, and accurate reference voltage generators.
- Comprehensive set of communication interfaces: USART, LPUART, SPI, I2C, SAI, and USB 2.0 FS device.
- High efficiency embedded SMPS step-down converter with intelligent bypass mode.
- Advanced security features including AES encryption engines, PKA, RNG, and customer key storage.
- Support for external PA and integrated passive device (IPD) companion chips.
- Touch sensing controller and LCD driver up to 8x40 or 4x44 with internal step-up converter.
Applications
- Wireless and IoT applications requiring low power consumption.
- Smart home devices and automation systems.
- Wearable devices and health monitoring systems.
- Industrial automation and control systems.
- Smart energy management and metering systems.
- Compliance with radio frequency regulations such as ETSI EN 300 328, EN 300 440, FCC CFR47 Part 15, and ARIB STD-T66.
Q & A
- What is the core architecture of the STM32WB55RGV6?
The STM32WB55RGV6 features an Arm® 32-bit Cortex®-M4 CPU with FPU and a dedicated Arm® 32-bit Cortex®-M0+ CPU for real-time radio layer processing.
- What are the key communication interfaces available on this device?
The device includes USART, LPUART, SPI, I2C, SAI, and a USB 2.0 FS device.
- What is the power supply range for the STM32WB55RGV6?
The power supply range is from 1.71 to 3.6 V.
- What are the operating temperature ranges for this device?
The operating temperature ranges are -40 °C to 85 °C / 105 °C.
- Does the STM32WB55RGV6 support Bluetooth and other wireless protocols?
Yes, it supports Bluetooth® 5.4, IEEE 802.15.4, Thread 1.3, and Zigbee® 3.0.
- What are the key security features of the STM32WB55RGV6?
The device includes AES encryption engines, PKA, RNG, and customer key storage.
- How does the device manage power consumption?
The device features multiple power-saving modes, including a 13 nA shutdown mode, 600 nA Standby mode + RTC + 32 KB RAM, and 2.1 µA Stop mode + RTC + 256 KB RAM.
- What types of timers are available on the STM32WB55RGV6?
The device includes 1x 32-bit timer, 4x 16-bit timers, and 2x ultra-low-power 16-bit timers.
- Does the device support touch sensing and LCD driving?
Yes, it includes a touch sensing controller and an LCD driver up to 8x40 or 4x44 with an internal step-up converter.
- What is the purpose of the integrated SMPS step-down converter?
The integrated SMPS step-down converter provides high efficiency with intelligent bypass mode capability.
