Overview
The STM32WL55CCU7 is a cutting-edge sub-GHz wireless microcontroller from STMicroelectronics, designed to offer advanced wireless connectivity and ultra-low power consumption. This device features a dual-core architecture with an Arm Cortex-M4 and an Arm Cortex-M0+ core, operating at frequencies up to 48 MHz. The STM32WL55CCU7 is part of the STM32WL series, which integrates a powerful and ultra-low-power LPWAN-compliant radio solution, supporting modulations such as LoRa®, (G)FSK, (G)MSK, and BPSK. This microcontroller is ideal for applications requiring long-range wireless communication and high performance with minimal power consumption.
Key Specifications
| Specification | Value |
|---|---|
| Part Number | STM32WL55CCU7 |
| Manufacturer | STMicroelectronics |
| Package | 48-UFQFN Exposed Pad |
| Core | Dual-core Arm Cortex-M4/M0+ |
| Operating Frequency | Up to 48 MHz |
| Flash Memory | 256 Kbytes |
| SRAM | 64 Kbytes |
| Input Voltage Min | 1.8 V |
| Supply Voltage Max | 3.6 V |
| Minimum Operating Temperature (°C) | -40.0 |
| Maximum Operating Temperature (°C) | 105.0 |
| ADC Resolution | 12-bit, up to 16 bits with hardware oversampling |
| DAC Resolution | 12-bit |
| Timers | 3x 16-bit, 1x 32-bit, 3x ultra-low-power timers |
| Communication Interfaces | 2x USART, 1x LPUART, 3x I2C, 2x SPI |
| Power Modes | Shutdown, Standby (+ RTC), Stop2 (+ RTC) |
| Power Consumption | Shutdown: 31 nA, Standby (+ RTC): 360 nA, Stop2 (+ RTC): 1.07 µA |
Key Features
- Dual-Core Architecture: Features an Arm Cortex-M4 and an Arm Cortex-M0+ core, both operating at up to 48 MHz.
- Ultra-Low Power: Offers various power-saving modes including shutdown, standby, and stop modes, with consumption as low as 31 nA in shutdown mode.
- Advanced Radio Solution: Supports LoRa®, (G)FSK, (G)MSK, and BPSK modulations, making it suitable for LPWAN applications.
- Security Features: Includes hardware encryption (AES 256-bit), true random number generator (RNG), and secure firmware update and install capabilities.
- Analog Peripherals: Equipped with a 12-bit ADC, 12-bit DAC, and two ultra-low-power comparators.
- Communication Interfaces: Includes two USARTs, one LPUART, three I2Cs, and two SPIs, facilitating versatile communication options.
- High-Efficiency SMPS: Features an integrated SMPS step-down converter and independent power supplies for analog inputs.
- Development Support: Supports serial-wire debug (SWD), JTAG, and dual CPU cross trigger capabilities.
Applications
- IoT Devices: Ideal for Internet of Things (IoT) applications requiring long-range wireless communication and low power consumption.
- Smart Metering: Suitable for smart metering systems that need reliable and efficient wireless communication.
- Industrial Automation: Used in industrial automation for remote monitoring and control applications.
- Smart Cities: Applied in smart city infrastructure for various wireless sensing and monitoring applications.
- Wearables and Health Devices: Suitable for wearable devices and health monitoring systems due to its low power consumption and compact size.
Q & A
- What is the core architecture of the STM32WL55CCU7?
The STM32WL55CCU7 features a dual-core architecture with an Arm Cortex-M4 and an Arm Cortex-M0+ core.
- What are the supported wireless modulations?
The device supports LoRa®, (G)FSK, (G)MSK, and BPSK modulations.
- What is the operating frequency of the cores?
The cores operate at frequencies up to 48 MHz.
- What is the memory capacity of the STM32WL55CCU7?
The device has 256 Kbytes of flash memory and 64 Kbytes of SRAM.
- What are the power consumption modes available?
The device offers shutdown, standby (+ RTC), and stop2 (+ RTC) power modes.
- What are the key security features of the STM32WL55CCU7?
The device includes hardware encryption (AES 256-bit), true random number generator (RNG), and secure firmware update and install capabilities.
- What analog peripherals are available on the STM32WL55CCU7?
The device is equipped with a 12-bit ADC, 12-bit DAC, and two ultra-low-power comparators.
- What communication interfaces does the STM32WL55CCU7 support?
The device supports two USARTs, one LPUART, three I2Cs, and two SPIs.
- Is the STM32WL55CCU7 RoHS compliant?
Yes, the STM32WL55CCU7 is RoHS compliant with an Ecopack2 grade.
- What is the operating temperature range of the STM32WL55CCU7?
The operating temperature range is from -40°C to +105°C.
