Overview
The STM32WB55CGU7, produced by STMicroelectronics, is a cutting-edge, ultra-low-power dual-core microcontroller. It features an Arm Cortex-M4 core operating at up to 64 MHz and a Cortex-M0+ core at 32 MHz, designed for real-time low-layer operations. This MCU is integrated with a powerful and ultra-low-power radio compliant with Bluetooth Low Energy 5.4 and IEEE 802.15.4 specifications, making it ideal for wireless and IoT applications. The device includes extensive memory options, advanced security features, and a wide range of peripherals, ensuring high performance and low power consumption.
Key Specifications
| Specification | Details |
|---|---|
| Processor Cores | 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 | Bluetooth Low Energy 5.4, IEEE 802.15.4, Zigbee, Thread 1.3 |
| ADC | 12-bit, up to 4.26 Msps, up to 16-bit with hardware oversampling |
| Timers | 1 x 32-bit, 5 x 16-bit, 2 x ultra-low-power 16-bit timers |
| Communication Interfaces | 1 x USART, 1 x LPUART, 2 x SPI, 2 x I2C, 1 x SAI, 1 x USB 2.0 FS |
| Power Supply | 1.71 to 3.6 V, with internal SMPS step-down converter |
| Operating Temperature | -40 to +105 °C (+125 °C junction) |
| Package Options | UFQFPN48, UFBGA129, WLCSP100, VFQFPN68 |
Key Features
- Dual-core architecture with Arm Cortex-M4 and Cortex-M0+ cores for efficient processing and real-time operations.
- Ultra-low-power radio supporting Bluetooth Low Energy 5.4, IEEE 802.15.4, Zigbee, and Thread 1.3.
- High-speed memories including up to 1 MB Flash and up to 256 KB SRAM.
- Advanced security features such as AES encryption, PKA, RNG, and sector protection against R/W operations.
- Rich analog peripherals including a 12-bit ADC, ultra-low-power comparators, and an accurate reference voltage generator.
- Extensive range of communication interfaces including USART, LPUART, SPI, I2C, SAI, and USB 2.0 FS.
- Integrated LCD driver and touch sensing controller.
- Low-power RTC, multiple timers, and DMA controllers.
- High efficiency SMPS step-down converter and ultra-safe, low-power BOR.
Applications
- Wireless and IoT devices.
- Smart home and industrial automation.
- Wearables and fitness trackers.
- Medical devices and health monitoring systems.
- Smart energy management and metering.
- Automotive and transportation systems.
Q & A
- What are the key processor cores in the STM32WB55CGU7?
The STM32WB55CGU7 features an Arm Cortex-M4 core operating at up to 64 MHz and an Arm Cortex-M0+ core at up to 32 MHz. - What wireless protocols does the STM32WB55CGU7 support?
The device supports Bluetooth Low Energy 5.4, IEEE 802.15.4, Zigbee, and Thread 1.3. - What is the memory capacity of the STM32WB55CGU7?
The device has up to 1 MB of Flash memory and up to 256 KB of SRAM. - What are the key security features of the STM32WB55CGU7?
The device includes AES encryption, PKA, RNG, and sector protection against R/W operations. - What are the operating temperature ranges for the STM32WB55CGU7?
The device operates in the -40 to +105 °C (+125 °C junction) temperature range. - What power supply options are available for the STM32WB55CGU7?
The device operates from a 1.71 to 3.6 V power supply and includes an internal SMPS step-down converter. - What communication interfaces are available on the STM32WB55CGU7?
The device includes USART, LPUART, SPI, I2C, SAI, and USB 2.0 FS interfaces. - Does the STM32WB55CGU7 support over-the-air updates?
Yes, the device supports OTA updates for Bluetooth Low Energy and 802.15.4. - What is the purpose of the IPCC in the STM32WB55CGU7?
The IPCC (Inter Processor Communication Controller) is used for communication between the Bluetooth Low Energy and 802.15.4 radios and the main processor. - Can the STM32WB55CGU7 be powered by a battery?
Yes, the device can be powered by a CR2032-like battery, a Supercap, or a small rechargeable battery through the VBAT dedicated supply.
