Description
The STM32L431CBT6 is an ultra-low-power microcontroller from the STM32L4 series, powered by an ARM® Cortex®-M4 32-bit core with an integrated Floating Point Unit (FPU). Delivering 100 DMIPS and achieving an impressive 176.7 ULPBench® score, this MCU is specifically designed for energy-sensitive applications that demand high computational efficiency. Featuring 128KB of Flash memory, 64KB of RAM, and a rich set of analog and communication peripherals, it provides a powerful yet energy-conscious solution for modern IoT and battery-operated devices.
Key Features
- Ultra-Low-Power Core: ARM® Cortex®-M4 32-bit CPU with FPU, optimized for high performance (up to 80MHz) and energy efficiency.
- Advanced Sensing: Integrated support for up to 21 capacitive touch-sensing channels for sophisticated HMI designs.
- Rich Connectivity: 16 communication interfaces, including CAN, SPI, I2C, UART, USART, and SAI.
- Enhanced Peripherals: 11 timers, a 14-channel DMA controller, and a Quad SPI memory interface.
- High-Precision Analog: Rich analog peripherals with an independent supply for noise-sensitive measurements.
- Security & Identity: True random number generator, CRC calculation unit, and a unique 96-bit ID.
- Developer Friendly: Comprehensive support for SWD, JTAG, and Embedded Trace Macrocell™ (ETM).
Applications
- Battery-Operated IoT: Energy-efficient nodes for wireless sensor networks and smart home devices.
- Wearables: Ideal for compact electronics requiring capacitive touch-key, linear, or rotary sensing.
- Industrial Instrumentation: Low-power, high-accuracy sensing and control for remote process monitoring.
- Medical Devices: Reliable processing for portable patient monitoring and diagnostic equipment.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | STM32L431CBT6 |
| Core Architecture | ARM Cortex-M4 (32-bit) |
| Max Clock Frequency | 80 MHz |
| Program Memory | 128 KB Flash |
| RAM Size | 64 KB |
| No. of I/Os | 38 |
| Supply Voltage | 1.71V to 3.6V |
| Package/Case | LQFP (48 Pins) |
Note: Product images are shown for illustrative purposes only and may differ from the actual product. Please refer to the official STMicroelectronics datasheet for complete electrical characteristics and application design details.
