Overview
The STM32WB55CGU6U, produced by STMicroelectronics, is an ultra-low-power dual-core Arm Cortex-M4 microcontroller. This device is part of the STM32WB series, which integrates a 2.4 GHz radio transceiver supporting Bluetooth 5.4, IEEE 802.15.4, Thread 1.3, and Zigbee 3.0 protocols. It is designed for applications requiring low power consumption and advanced wireless communication capabilities.
Key Specifications
| Parameter | Specification |
|---|---|
| Microcontroller Core | Dual-core Arm Cortex-M4 and Cortex-M0+ |
| Flash Memory | Up to 1 MB with sector protection |
| SRAM | Up to 256 KB, including 64 KB with hardware parity check |
| Operating Voltage | 1.71 to 3.6 V |
| Operating Temperature | -40 to +85 °C / +105 °C junction |
| Radio Frequency | 2.4 GHz, supporting Bluetooth 5.4, IEEE 802.15.4, Thread 1.3, and Zigbee 3.0 |
| ADC | 12-bit, up to 4.26 Msps, up to 16-bit with hardware oversampling |
| DMA Channels | 2x DMA controllers with 7 channels each |
| Communication Interfaces | USART, LPUART, SPI, I2C, USB 2.0 FS, Quad-SPI with XIP |
| Package | 48-UFQFN Exposed Pad |
Key Features
- Ultra-low-power platform with multiple power-saving modes (shutdown, standby, stop)
- Integrated 2.4 GHz radio transceiver with support for Bluetooth 5.4, IEEE 802.15.4, Thread 1.3, and Zigbee 3.0
- Dual-core architecture with Arm Cortex-M4 and Cortex-M0+ cores
- Rich analog peripherals including 12-bit ADC, ultra-low-power comparators, and accurate reference voltage buffered output
- Advanced communication interfaces such as USART, LPUART, SPI, I2C, USB 2.0 FS, and Quad-SPI with execute-in-place (XIP) capability
- Security features including AES encryption engines, PKA, RNG, and customer key storage
- Inter-processor communication controller (IPCC) for communication with Bluetooth Low Energy and 802.15.4
- Support for over-the-air (OTA) updates for Bluetooth Low Energy and 802.15.4
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 devices requiring Bluetooth, Thread, or Zigbee protocols
Q & A
- What is the primary application of the STM32WB55CGU6U?
The primary application of the STM32WB55CGU6U includes wireless sensor networks, IoT devices, smart home and building automation, industrial automation, and wearable devices. - What wireless protocols does the STM32WB55CGU6U support?
The STM32WB55CGU6U supports Bluetooth 5.4, IEEE 802.15.4, Thread 1.3, and Zigbee 3.0 protocols. - What is the operating voltage range of the STM32WB55CGU6U?
The operating voltage range is from 1.71 to 3.6 V. - What are the key security features of the STM32WB55CGU6U?
The key security features include AES encryption engines, PKA, RNG, customer key storage, and memory protection mechanisms. - Does the STM32WB55CGU6U support over-the-air updates?
Yes, it supports over-the-air (OTA) updates for Bluetooth Low Energy and 802.15.4. - What is the maximum data rate supported by the radio transceiver?
The maximum data rate supported is 2 Mbps. - What are the power consumption modes available on the STM32WB55CGU6U?
The device features multiple power-saving modes including shutdown, standby, and stop modes. - What type of package is the STM32WB55CGU6U available in?
The STM32WB55CGU6U is available in a 48-UFQFN Exposed Pad package. - Does the STM32WB55CGU6U have built-in analog peripherals?
Yes, it includes rich analog peripherals such as a 12-bit ADC, ultra-low-power comparators, and accurate reference voltage buffered output. - How many DMA channels does the STM32WB55CGU6U have?
The device has 2x DMA controllers with 7 channels each.
