STMicroelectronics STM32L431CBT6

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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 39
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 ~ 85°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 48-LQFP (7x7)
Package / Case 48-LQFP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The STM32L431CBT6 is a low-power 32-bit ARM Cortex-M4 microcontroller from STMicroelectronics, running at 80MHz. It offers 128KB flash and 64KB RAM in a 48-LQFP package. Operating from 1.71V to 3.6V, it includes DMA, PWM, and WDT, making it ideal for energy-efficient and performance-demanding embedded applications.

  • 80MHz Cortex-M4: delivers DSP-like performance for complex algorithms.
  • Large 64KB RAM: supports multitasking and data buffering.
  • Ultra-low voltage (1.71V): extends battery life in portable devices.
  • 48-LQFP package: balances I/O count with board space.

IoT Edge Nodes

80MHz Cortex-M4 with 64KB RAM handles MQTT and sensor fusion while maintaining low power.

Industrial Automation

DMA and PWM enable precise control of actuators and data logging in PLCs.

Smart Meters

Low 1.71V operation and 128KB flash support complex metering algorithms in utility devices.

Medical Wearables

Efficient M4 core and small 48-LQFP package fit into compact health monitors.

Robotics Controllers

High-speed PWM and multiple timers allow servo control for hobby and educational robots.

Energy Harvesting Systems

Ultra-low voltage threshold enables operation from single-cell solar or TEG sources.

Q: What is the core and speed?
A: ARM Cortex-M4 at 80MHz.
Q: What is the voltage range?
A: 1.71V to 3.6V.
Q: How much memory is available?
A: 128KB flash and 64KB RAM.
Q: What package is it?
A: 48-LQFP.
Q: Does it have DMA?
A: Yes, includes DMA, PWM, and WDT.
Base Product Number : STM32L431CBT6
128KB Flash 32-bit MCU 64KB RAM 80MHz ARM Cortex-M4 DMA industrial IoT low power LQFP-48 PWM STM32L431CBT6 WDT
Q: What is the core and speed?
A: ARM Cortex-M4 at 80MHz.
Q: What is the voltage range?
A: 1.71V to 3.6V.
Q: How much memory is available?
A: 128KB flash and 64KB RAM.
Q: What package is it?
A: 48-LQFP.
Q: Does it have DMA?
A: Yes, includes DMA, PWM, and WDT.