Overview
The STM32WB55CCU6 is a multiprotocol wireless microcontroller from STMicroelectronics, designed for ultra-low-power applications. It features a dual-core architecture with an Arm Cortex-M4 CPU operating at up to 64 MHz and an Arm Cortex-M0+ CPU dedicated for real-time low-layer operations. This device is compliant with Bluetooth Low Energy 5.4 and IEEE 802.15.4-2011 specifications, supporting protocols like Thread 1.3 and Zigbee 3.0. The STM32WB55CCU6 is optimized for low-power consumption, making it suitable for a wide range of wireless and IoT applications.
Key Specifications
| Parameter | Specification |
|---|---|
| Processor | Arm Cortex-M4 (up to 64 MHz) and Arm Cortex-M0+ (up to 32 MHz) |
| Memory | Up to 1 MB Flash, up to 256 KB SRAM |
| Radio | 2.4 GHz RF transceiver supporting Bluetooth Low Energy 5.4 and IEEE 802.15.4 |
| Power Supply | 1.71 to 3.6 V |
| Temperature Range | -40 to +105 °C (junction temperature up to +125 °C) |
| Package | UFQFPN 48 7x7x0.55 mm |
| ADC | 12-bit, up to 16-bit with hardware oversampling, 4.26 Msps |
| 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 |
| Security Features | 2x AES encryption engines, PKA, RNG, customer key storage |
Key Features
- Ultra-low-power platform with multiple power-saving modes (shutdown, standby, stop)
- High-performance Arm Cortex-M4 CPU with FPU and DSP instructions
- Dedicated Arm Cortex-M0+ CPU for real-time radio layer operations
- Integrated balun and support for external PA
- Accurate RSSI for power control and programmable output power up to +6 dBm
- Rich analog peripherals including 12-bit ADC, ultra-low-power comparators, and accurate reference voltage generator
- Advanced communication interfaces including USART, LPUART, SPI, I2C, SAI, and USB 2.0 FS device
- Touch sensing controller with up to 18 sensors and integrated LCD driver
- High-efficiency SMPS step-down converter with intelligent bypass mode
- Secure firmware installation and OTA updates for Bluetooth Low Energy and 802.15.4
Applications
- Wireless IoT devices
- Smart home and building automation
- Industrial automation and control
- Health and fitness trackers
- Smart meters and energy management systems
- Automotive and transportation systems
Q & A
- What is the primary processor in the STM32WB55CCU6?
The primary processor is an Arm Cortex-M4 CPU operating at up to 64 MHz.
- What wireless protocols does the STM32WB55CCU6 support?
The device supports Bluetooth Low Energy 5.4 and IEEE 802.15.4-2011, including Thread 1.3 and Zigbee 3.0.
- What is the power supply range for the STM32WB55CCU6?
The power supply range is from 1.71 to 3.6 V.
- What are the key security features of the STM32WB55CCU6?
The device includes 2x AES encryption engines, PKA, RNG, and customer key storage.
- What types of timers are available on the STM32WB55CCU6?
The device features 1x 32-bit timer, 4x 16-bit timers, and 2x ultra-low-power 16-bit timers.
- Does the STM32WB55CCU6 support OTA updates?
Yes, it supports over-the-air updates for Bluetooth Low Energy and 802.15.4.
- What is the temperature range for the STM32WB55CCU6?
The operating temperature range is -40 to +105 °C (junction temperature up to +125 °C).
- What is the package type for the STM32WB55CCU6?
The package type is UFQFPN 48 7x7x0.55 mm.
- Does the STM32WB55CCU6 have integrated analog peripherals?
Yes, it includes a 12-bit ADC, ultra-low-power comparators, and an accurate reference voltage generator.
- What communication interfaces are available on the STM32WB55CCU6?
The device features USART, LPUART, SPI, I2C, SAI, and a USB 2.0 FS device.
