Overview
The STM32WB55CEU6TR is a multiprotocol wireless microcontroller from STMicroelectronics, designed for ultra-low-power applications. It integrates a powerful Arm® Cortex®-M4 32-bit RISC core with a Floating Point Unit (FPU) and a dedicated Arm® Cortex®-M0+ CPU for real-time radio layer operations. This device supports Bluetooth® 5.4 and IEEE 802.15.4-2011 protocols, making it suitable for a wide range of wireless communication applications. The STM32WB55CEU6TR is part of the STM32WB55xx series, known for its high performance, low power consumption, and extensive set of peripherals and interfaces.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 with FPU, up to 64 MHz |
| Radio | 2.4 GHz RF transceiver supporting Bluetooth® 5.4 and IEEE 802.15.4 |
| Memory | Up to 1 MB flash memory, up to 256 KB SRAM |
| Power Supply | 1.71 to 3.6 V |
| Temperature Range | -40 to +105 °C (junction temperature) |
| ADC | 12-bit ADC, up to 16-bit with hardware oversampling |
| Timers | 1x 32-bit, 4 channels; 2x 16-bit, 2 channels; 2x 16-bit low-power timers |
| Communication Interfaces | USART, LPUART, 2x SPI, 2x I2C, SAI, USB 2.0 FS device |
| Package | UFQFPN 48 7x7x0.55 mm |
| Security Features | 2x AES encryption engines, PKA, RNG, secure firmware installation |
Key Features
- Dedicated Arm® 32-bit Cortex®-M0+ CPU for real-time radio layer operations
- Ultra-low-power platform with multiple power-saving modes
- High-efficiency embedded SMPS step-down converter with intelligent bypass mode
- Rich analog peripherals including 12-bit ADC and ultra-low-power comparators
- Extensive set of communication interfaces: USART, LPUART, SPI, I2C, SAI, USB 2.0 FS device
- Touch sensing controller with up to 18 sensors and LCD driver up to 8x40 or 4x44
- Advanced security features including AES encryption engines and secure firmware installation
- 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 systems
- Industrial automation and control systems
- Healthcare and medical devices requiring wireless connectivity
- Consumer electronics such as wearables and fitness trackers
Q & A
- What is the core architecture of the STM32WB55CEU6TR?
The STM32WB55CEU6TR features an Arm® 32-bit Cortex®-M4 core with a Floating Point Unit (FPU) and a dedicated Arm® 32-bit Cortex®-M0+ CPU for real-time radio layer operations.
- What wireless protocols does the STM32WB55CEU6TR support?
The device supports Bluetooth® 5.4 and IEEE 802.15.4-2011 protocols.
- What is the memory capacity of the STM32WB55CEU6TR?
The device has up to 1 MB of flash memory and up to 256 KB of SRAM.
- What is the power supply range for the STM32WB55CEU6TR?
The device operates from a 1.71 to 3.6 V power supply.
- What are the temperature ranges for the STM32WB55CEU6TR?
The device operates in the -40 to +105 °C temperature range.
- What types of timers are available on the STM32WB55CEU6TR?
The device includes 1x 32-bit, 4 channels; 2x 16-bit, 2 channels; and 2x 16-bit low-power timers.
- Does the STM32WB55CEU6TR support over-the-air updates?
Yes, the device supports over-the-air (OTA) updates for Bluetooth® Low Energy and 802.15.4.
- What security features are included in the STM32WB55CEU6TR?
The device includes 2x AES encryption engines, PKA, RNG, and secure firmware installation.
- What is the package type for the STM32WB55CEU6TR?
The device is available in a UFQFPN 48 7x7x0.55 mm package.
- Does the STM32WB55CEU6TR support touch sensing and LCD driving?
Yes, the device includes a touch sensing controller with up to 18 sensors and an LCD driver up to 8x40 or 4x44.
- What are some typical applications for the STM32WB55CEU6TR?
Typical applications include wireless sensor networks, smart home devices, industrial automation, healthcare devices, and consumer electronics like wearables and fitness trackers.
