STMicroelectronics STM32L431KBU3
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $4.86 | $4.86 |
| 15+ | $3.19 | $47.85 |
| 25+ | $3.12 | $78.00 |
| 50+ | $2.95 | $147.50 |
| 100+ | $2.60 | $260.00 |
| N+ | $0.52 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | STMicroelectronics |
| Product Series | STM32L4 |
| Packaging | Tray | |
| Core Processor | ARM® Cortex®-M4 |
| Core Size | 32-Bit Single-Core |
| Speed | 80MHz |
| Connectivity | CANbus, I2C, IrDA, LINbus, QSPI, SAI, SPI, SWPMI, UART/USART |
| Peripherals | Brown-out Detect/Reset, DMA, PWM, WDT |
| Number of I/O | 26 |
| 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 10x12b; D/A 2x12b |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Grade | - |
| Qualification AEC | - |
| Mounting Type | Surface Mount |
| Supplier Device Package | 32-UFQFPN (5x5) |
| Package / Case | 32-UFQFN Exposed Pad |
| ROHS |  |
The STM32L431KBU3 is a low-power ARM Cortex-M4 microcontroller from STMicroelectronics, running at 80MHz with FPU. It features 128KB Flash and 64KB RAM, operating from 1.71V to 3.6V. The device includes DMA, PWM, and multiple communication interfaces, making it suitable for industrial, automotive, and IoT applications. Housed in a 32-UFQFN package, it offers high performance in a compact footprint.
- ARM Cortex-M4 with FPU: Accelerates floating-point math for DSP and control algorithms, reducing CPU load.
- Ultra-Low Power: Multiple low-power modes and 1.71V operation extend battery life in portable devices.
- Wide Temperature Range (-40°C to 125°C): Reliable in extreme environments like automotive under-hood or industrial ovens.
- Large 64KB RAM: Supports complex multitasking and data buffering without external memory.
Industrial IoT Gateways
The 80MHz Cortex-M4 with FPU handles protocol stacks (MQTT, TCP/IP) and sensor fusion, while DMA offloads data transfer.
Smart Grid Meters
High accuracy ADC and low power modes enable energy metering with tamper detection, operating over wide temperature ranges.
Automotive Body Control
With 125°C rating and robust peripherals, it manages lighting, wipers, and door locks in engine compartments.
Portable Instrumentation
64KB RAM supports data buffering from high-speed ADCs, while 1.71V operation extends battery life in handheld scopes.
Medical Wearables
Ultra-low power modes and FPU accelerate biosignal processing (ECG, PPG) for continuous health monitoring.
Robotics Controllers
Multiple timers and PWM channels drive servo motors, while DMA handles encoder feedback without CPU intervention.
- Q: What core does it use?
- A: It is based on the ARM Cortex-M4 core with FPU, running at 80MHz for efficient signal processing.
- Q: What is the operating temperature range?
- A: It operates from -40°C to 125°C, suitable for harsh industrial environments.
- Q: How much Flash and RAM are available?
- A: It provides 128KB Flash and 64KB RAM, supporting complex applications.
- Q: What is the supply voltage?
- A: It works from 1.71V to 3.6V, allowing low-power battery operation.
- Q: What package is offered?
- A: It comes in a 32-UFQFN package with exposed pad for thermal management.
STM32L431KBU3.pdf
- Q: What core does it use?
- A: It is based on the ARM Cortex-M4 core with FPU, running at 80MHz for efficient signal processing.
- Q: What is the operating temperature range?
- A: It operates from -40°C to 125°C, suitable for harsh industrial environments.
- Q: How much Flash and RAM are available?
- A: It provides 128KB Flash and 64KB RAM, supporting complex applications.
- Q: What is the supply voltage?
- A: It works from 1.71V to 3.6V, allowing low-power battery operation.
- Q: What package is offered?
- A: It comes in a 32-UFQFN package with exposed pad for thermal management.
