Parts STM32L431CCU6TR

STM32L431CCU6TR

Name: STM32L431CCU6TR
Brand: STMicroelectronics

STMicroelectronics

ARM® Cortex®-M4 STM32L4 Microcontroller IC 32-Bit 80MHz 256KB (256K x 8) FLASH 48-UFQFPN (7x7)

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Overview

The STM32L431CCU6TR is an ultra-low-power microcontroller based on the high-performance Arm Cortex-M4 32-bit RISC core operating at up to 80MHz. This device balances power efficiency and processing capability by integrating a floating-point unit (FPU), DSP instructions, and ST's Adaptive Real-Time (ART) Accelerator for zero-wait-state execution from Flash.

Why Choose This Part

This MCU excels in power-constrained environments, offering a dedicated FlexPowerControl system and multiple low-power modes down to 10nA in shutdown. It provides high analog integration with 10 ADC channels, two DACs, and an operational amplifier with a programmable gain amplifier (PGA), reducing external component count.

Applications

Battery-Powered Industrial Sensors

Utilizes Stop 2 mode and Batch Acquisition Mode (BAM) to minimize energy consumption while processing sensor data via the 12-bit ADC.

Automotive Telematics

Leverages the integrated CANbus and LINbus interfaces for vehicle networking and diagnostic data logging.

Smart Utility Meters

Provides secure data handling with a hardware true random number generator (TRNG) and CRC calculation unit for encrypted communication.

Wearable Health Monitors

The 48-UFQFPN package and ultra-low leakage shutdown mode (0.01 uA) make it ideal for small, long-lasting personal medical devices.

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-UFQFN Exposed Pad

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-UFQFPN (7x7)

Voltage - Supply (Vcc/Vdd) 1.71V ~ 3.6V

Getting Started

Development is best supported by the NUCLEO-L432KC board or the STM32CubeL4 software package, which includes comprehensive HAL and low-layer drivers. Engineers can utilize STM32CubeIDE for integrated development and STM32CubeMX for graphical clock and peripheral configuration.

Dev Boards

Development boards and breakout modules featuring the STM32L431CCU6TR 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
STM32L431CCU6TR (this part) Tape & Reel	39	UFQFN-48	256KB	2,696
STM32L431CCT6TR Tape & Reel	39	LQFP-48	256KB	2,090
STM32L431CCU6	39	UFQFN-48	256KB	4,536
STM32L431CBT6	39	LQFP-48	128KB	8,177
STM32L431CCY6TR Tape & Reel	39	UFBGA-49	256KB	4,345
STM32L431KCU6	26	UFQFN-32	256KB	4,370