ARM Microcontrollers – MCU Ultra-low-power FPU Arm Cortex-M4 MCU 80 MHz 128 Kbytes of Flash

STM32L431RBT6 – Ultra-Low-Power ARM Cortex-M4 Microcontroller – STMicroelectronics

Engineered for energy-sensitive applications, the STM32L431RBT6 from STMicroelectronics delivers high performance with exceptional power efficiency. This 32-bit microcontroller combines an ARM Cortex-M4 core running at 80MHz with 128KB Flash and 64KB SRAM, making it ideal for battery-operated devices and complex embedded systems. Get reliable, industry-grade processing with PCX’s guaranteed stock and direct shipping.

Key Features

• Core: ARM® Cortex®-M4 32-bit processor @ 80MHz
• Memory: 128KB Flash + 64KB SRAM
• Ultra-Low Voltage: Operates from 1.71V to 3.6V
• I/O Pins: 52 programmable GPIOs
• Connectivity: CANbus, I2C, SPI, UART/USART, USB, SD/MMC
• Data Converters: 16×12-bit ADC + 2×12-bit DAC
• Temperature Range: -40°C to 85°C

Technical Details

This embedded microcontroller features advanced peripherals including DMA controllers, PWM timers, and hardware watchdog. The 64-LQFP (10x10mm) surface-mount package integrates an internal oscillator and brown-out reset protection. Part of STM32L4 series, it leverages ST’s ART Accelerator™ for zero-wait Flash execution. Download Datasheet

Typical Applications

• IoT sensors and wearable devices
• Portable medical instrumentation
• Industrial automation controllers
• Smart building systems
• Battery-powered consumer electronics

About STMicroelectronics

STMicroelectronics is a global semiconductor leader with 40+ years of innovation in microcontroller technology. Their STM32 portfolio sets industry benchmarks for power efficiency and processing performance, serving automotive, industrial, and consumer markets.

Renowned for robust design and long-term product lifecycle support, STMicroelectronics maintains ISO-certified manufacturing with rigorous quality controls. Engineers worldwide trust STM32 MCUs for mission-critical applications requiring reliability and technical excellence.

About Microcontrollers

Microcontrollers (MCUs) are integrated circuits that serve as the computational “brain” in embedded systems. Unlike general-purpose processors, MCUs combine CPU, memory, and peripherals on a single chip – enabling compact, cost-effective designs for dedicated tasks.

Modern MCUs like the STM32L4 series are essential for IoT and edge computing, providing real-time processing with minimal energy consumption. Their programmable nature allows customization for diverse applications, from motor control to wireless communication systems.

Packaging

Available in protective manufacturing trays. Contact PCX for reel packaging options.

Frequently Asked Questions

Question: What advantages does the Cortex-M4 core offer?
Answer: The ARM Cortex-M4 provides DSP instructions and hardware FPU support for efficient math operations, plus Thumb®-2 instruction set for code density.

Question: Can this MCU operate at 3.3V?
Answer: Yes, it supports 1.71V-3.6V operation – ideal for 3.3V systems or direct battery connection (e.g., Li-ion).

Question: Is development software available?
Answer: ST provides free STM32CubeIDE with HAL libraries for rapid application development.

Question: How does the ultra-low-power mode benefit designs?
Answer: Multiple sleep modes reduce consumption to microamps, extending battery life in portable devices by years.

Question: What communication interfaces support industrial protocols?
Answer: Integrated CANbus and LINbus interfaces enable industrial network connectivity without external controllers.

Question: Does PCX provide technical support?
Answer: Yes! Our engineering team assists with datasheet interpretation and lifecycle management.

Order Today for Fast Delivery!

Leverage PCX’s same-day shipping and authentic STMicroelectronics supply chain. Get your STM32L431RBT6 microcontrollers delivered reliably – order now to avoid project delays!

Note: Product images are representational. Refer to datasheet for exact specifications.