STMicroelectronics STM32L431RBY6TR
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $5.68 | $5.68 |
| 15+ | $3.74 | $56.10 |
| 25+ | $3.65 | $91.25 |
| 50+ | $3.45 | $172.50 |
| 100+ | $3.05 | $305.00 |
| N+ | $0.61 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | STMicroelectronics |
| Product Series | STM32L4 |
| Packaging | Cut Tape (CT) | Tape & Reel (TR) |
| Core Processor | ARM® Cortex®-M4 |
| Core Size | 32-Bit Single-Core |
| Speed | 80MHz |
| Connectivity | CANbus, I2C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART |
| Peripherals | Brown-out Detect/Reset, DMA, PWM, WDT |
| Number of I/O | 52 |
| Program Memory Size | 128KB (128K x 8) |
| Program Memory Type | FLASH |
| EEPROM Size | - |
| RAM Size | 64K x 8 |
| Voltage - Supply (Vcc/Vdd) | 1.71V ~ 3.6V |
| Data Converters | A/D 16x12b; D/A 2x12b |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification AEC | - |
| Mounting Type | Surface Mount |
| Supplier Device Package | 64-WLCSP (3.14x3.13) |
| Package / Case | 64-UFBGA, WLCSP |
| ROHS |  |
The STM32L431RBY6TR is an ultra-low-power 32-bit microcontroller from STMicroelectronics, built on the ARM Cortex-M4 core with FPU. It operates at up to 80MHz and provides 128KB of flash memory and 64KB of SRAM. With a supply voltage range of 1.71V to 3.6V, it is designed for energy-efficient applications. The device includes advanced peripherals such as DMA, PWM, and a watchdog timer, and is available in a compact 64-UFBGA package. Its wide operating temperature range (-40°C to 85°C) makes it suitable for industrial and consumer applications.
- Ultra-low power consumption: Optimized for battery life, extending operation in portable devices.
- High performance: 80MHz Cortex-M4 with FPU accelerates math-intensive tasks.
- Large memory: 128KB flash and 64KB RAM support complex applications.
- Wide voltage range: 1.71V-3.6V allows direct battery connection without regulators.
- Compact package: WLCSP saves board space for miniaturized designs.
Battery-Powered IoT Sensors
The wide voltage range (1.71V-3.6V) and low-power features make it perfect for wireless sensor nodes that run on coin cells or energy harvesting.
Portable Medical Devices
With 80MHz Cortex-M4 performance and 128KB flash, it can handle real-time signal processing for glucose monitors or pulse oximeters while maintaining low power consumption.
Smart Home Controllers
Its rich peripheral set including PWM and DMA enables efficient control of lighting, motorized blinds, and HVAC systems with minimal external components.
Industrial Process Monitoring
The -40°C to 85°C temperature range and robust brown-out detection ensure reliable operation in factory automation and process control equipment.
Wearable Fitness Trackers
The compact WLCSP package and low power consumption allow for small form-factor designs that track activity and heart rate for days on a single charge.
Data Logging Systems
With 64KB RAM and DMA support, it can buffer sensor data efficiently before writing to external memory, ideal for environmental monitoring.
- Q: What is the operating voltage range of the STM32L431RBY6TR?
- A: It operates from 1.71V to 3.6V, ideal for battery-powered applications.
- Q: What core does this MCU use?
- A: It uses an ARM Cortex-M4 core running at up to 80MHz.
- Q: How much flash and RAM does it have?
- A: It has 128KB of flash memory and 64KB of SRAM.
- Q: What package is available?
- A: It comes in a 64-UFBGA or WLCSP package.
- Q: Does it support low-power modes?
- A: Yes, it is part of ST's ultra-low-power series with multiple low-power modes.
STM32L431RBY6TR.pdf
- Q: What is the operating voltage range of the STM32L431RBY6TR?
- A: It operates from 1.71V to 3.6V, ideal for battery-powered applications.
- Q: What core does this MCU use?
- A: It uses an ARM Cortex-M4 core running at up to 80MHz.
- Q: How much flash and RAM does it have?
- A: It has 128KB of flash memory and 64KB of SRAM.
- Q: What package is available?
- A: It comes in a 64-UFBGA or WLCSP package.
- Q: Does it support low-power modes?
- A: Yes, it is part of ST's ultra-low-power series with multiple low-power modes.
