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STM32L431CCT6

STM32L431CCT6

STMicroelectronics
ARM® Cortex®-M4 STM32L4 Microcontroller IC 32-Bit 80MHz 256KB (256K x 8) FLASH 48-LQFP (7x7)
Active2,669 in stock
Datasheet Digi-Key Compare Prices

Overview

The STM32L431CCT6 is an ultra-low-power 32-bit microcontroller based on the Arm Cortex-M4 core running at 80MHz. It features 256KB of Flash memory and 64KB of RAM, integrating an FPU and DSP instructions for efficient signal processing in energy-constrained environments. The device utilizes ST's FlexPowerControl and ART Accelerator to optimize power consumption while maintaining high performance.

Why Choose This Part

This MCU offers a high performance-to-power ratio, achieving 100DMIPS while consuming only 8.53mA in full run mode at 80MHz. Its comprehensive interconnect matrix allows peripherals to communicate without CPU intervention, further reducing power overhead. The wide operating voltage range of 1.71V to 3.6V supports various battery chemistries and power supply designs.

Applications

Battery-Powered IoT Nodes
Utilizes ultra-low-power modes as low as 10nA in shutdown to extend battery life in remote sensors.
Wearable Health Monitors
The integrated FPU and DSP instructions allow for on-device processing of biometric data in a small 48-pin package.
Industrial Sensor Interfaces
Multiple serial interfaces including CANbus, SPI, and I2C enable communication with various industrial peripherals.
Capacitive Touch Controllers
Built-in capacitive sensing support allows for the implementation of touch interfaces without external ICs.

Key Specifications

Speed 80MHz
RAM Size 64K x 8
Core Size 32-Bit
Peripherals Brown-out Detect/Reset, DMA, PWM, WDT
Connectivity CANbus, I2C, IrDA, LINbus, QSPI, SAI, SPI, SWPMI, UART/USART
Mounting Type Surface Mount
Number of I/O 39
Core Processor ARM Cortex-M4
Package / Case 48-LQFP
Data Converters A/D 10x12b; D/A 2x12b
Oscillator Type Internal
Program Memory Size 256KB (256K x 8)
Program Memory Type FLASH
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 48-LQFP (7x7)
Voltage - Supply (Vcc/Vdd) 1.71V ~ 3.6V

Getting Started

Developers can begin evaluation using the NUCLEO-L432KC or a custom board with the STM32CubeL4 software package. The chip is fully supported by the STM32CubeIDE, Keil MDK, and IAR Embedded Workbench. Debugging is typically performed via the integrated SWD interface using an ST-LINK/V2 or V3 debugger.

Dev Boards

Development boards and breakout modules featuring the STM32L431CCT6 or compatible chips — ready to use for prototyping.

NUCLEO-L432KC STMicroelectronics
Development Boards & Kits - ARM STM32 Nucleo-32 dev board STM32L432KC, supports Arduino nano conn
Digi-Key Mouser 2,384 in stock
NUCLEO-L476RG STMicroelectronics
Development Boards & Kits - ARM STM32 Nucleo-64 development board STM32L476RG MCU, supports Arduino & ST morpho
Digi-Key Mouser 2,929 in stock

STM32L431 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number I/O Pins Package Flash Stock
STM32L431CCT6 (this part) 39 LQFP-48 256KB 2,669
STM32L431CCT6TR Tape & Reel 39 LQFP-48 256KB 2,090
STM32L431CCU6 39 UFQFN-48 256KB 4,536
STM32L431CBT6 39 LQFP-48 128KB 8,177
STM32L431CCU6TR Tape & Reel 39 UFQFN-48 256KB 2,696
STM32L431CCY6TR Tape & Reel 39 UFBGA-49 256KB 4,345
STM32L431KCU6 26 UFQFN-32 256KB 4,370

Also Consider

STM32L433CCT6 STMicroelectronics - Includes a dedicated LCD controller and USB 2.0 crystal-less device functionality not present on the L431.
ATSAMD21G18A-AU MCHPMicrochip Technology - A popular Cortex-M0+ alternative with a similar pin count and broad community support for low-power applications.

Categories

Microcontrollers > ARM Cortex-M4 Microcontrollers > STMicroelectronics Wearables & Medical > Ultra-Low Power MCUs
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