Overview
The STM32WB55CEU6 is a multiprotocol wireless and ultra-low-power microcontroller unit (MCU) from STMicroelectronics. It combines the high-performance Arm® Cortex®-M4 32-bit RISC core with a dedicated Arm® Cortex®-M0+ co-processor for managing the 2.4 GHz radio, compliant with Bluetooth® Low Energy specification 5.2 and IEEE 802.15.4-2011. This device is designed for low-power applications and features advanced security mechanisms, extensive I/Os, and various communication interfaces.
Key Specifications
| Parameter | Specification |
|---|---|
| Core | Arm® Cortex®-M4 32-bit RISC core, Arm® Cortex®-M0+ co-processor |
| Frequency | Up to 64 MHz |
| Flash Memory | Up to 1 Mbyte (STM32WB55xx), 512 Kbytes (specific to STM32WB55CEU6) |
| SRAM | Up to 256 Kbytes |
| Power Supply | 1.71 to 3.6 V |
| Operating Temperature | -40 to +105 °C (+125 °C junction) |
| Communication Interfaces | USART, LPUART, I2C, SPI, SAI, USB 2.0 FS, Quad-SPI |
| Wireless Protocol | Bluetooth v5.2, Thread, Zigbee® |
| Package Style | UFQFPN-48, Surface Mount |
| Number of I/O Lines | 30 |
| ADC | 12-bit, up to 4.26 Msps |
| Timers | 1x 32-bit, 5x 16-bit |
| Capacitive Sensing Channels | Up to 18 channels (not on UFQFPN48 package) |
Key Features
- Ultra-low-power platform with various power-saving modes (13 nA shutdown mode, 600 nA Standby mode + RTC + 32 KB RAM, 2.1 µA Stop mode + RTC + 256 KB RAM)
- Integrated balun and support for external PA
- Advanced security features including AES encryption engines, PKA, RNG, and customer key storage
- High-speed memories and Quad-SPI flash memory interface
- Extensive range of enhanced I/Os and peripherals, including LCD driver and capacitive sensing channels
- Comprehensive set of communication interfaces (USART, LPUART, I2C, SPI, SAI, USB 2.0 FS, Quad-SPI)
- High efficiency SMPS step-down converter with automatic bypass mode
Applications
- Remote sensors
- Wearable trackers
- Building automation controllers
- Computer peripherals
- Drones
- IoT devices
Q & A
- What is the core architecture of the STM32WB55CEU6?
The STM32WB55CEU6 features an Arm® Cortex®-M4 32-bit RISC core and a dedicated Arm® Cortex®-M0+ co-processor for managing the radio.
- What is the maximum frequency of the STM32WB55CEU6?
The maximum frequency is up to 64 MHz.
- How much flash memory does the STM32WB55CEU6 have?
The STM32WB55CEU6 has up to 512 Kbytes of flash memory.
- What are the operating temperature ranges for the STM32WB55CEU6?
The operating temperature ranges are -40 to +105 °C (+125 °C junction).
- What wireless protocols does the STM32WB55CEU6 support?
The device supports Bluetooth v5.2, Thread, and Zigbee®.
- What is the package style of the STM32WB55CEU6?
The package style is UFQFPN-48, and it is surface mount.
- How many I/O lines does the STM32WB55CEU6 have?
The device has 30 I/O lines.
- What are the power-saving modes available on the STM32WB55CEU6?
The device features various power-saving modes including 13 nA shutdown mode, 600 nA Standby mode + RTC + 32 KB RAM, and 2.1 µA Stop mode + RTC + 256 KB RAM.
- Does the STM32WB55CEU6 have integrated security features?
Yes, it includes AES encryption engines, PKA, RNG, and customer key storage.
- What communication interfaces are available on the STM32WB55CEU6?
The device features USART, LPUART, I2C, SPI, SAI, USB 2.0 FS, and Quad-SPI interfaces.
