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STM32L432KCU6

STM32L432KCU6

STMicroelectronics
ARM® Cortex®-M4 STM32L4 Microcontroller IC 32-Bit 80MHz 256KB (256K x 8) FLASH 32-UFQFPN (5x5)
Active7,265 in stock
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Overview

The STM32L432KCU6 is a high-performance, ultra-low-power microcontroller based on the 32-bit ARM Cortex-M4 core with a Floating Point Unit (FPU). Operating at up to 80MHz, it integrates 256KB of Flash and 64KB of RAM within a compact 5x5mm UFQFPN32 package, making it ideal for space-constrained applications requiring digital signal processing and low energy consumption.

Why Choose This Part

This MCU features ST's Adaptive Real-Time (ART) Accelerator, allowing 0-wait state execution from Flash at 80MHz to maximize throughput while maintaining low power. Its flexible power management system includes a Batch Acquisition Mode (BAM) for efficient data transfer even while the CPU is in sleep mode.

Applications

Battery-Powered Wearables
Uses ultra-low-power modes like Shutdown (200nA) and Stop 2 to extend battery life in fitness trackers and smartwatches.
Industrial Sensor Nodes
Leverages the 10-channel 12-bit ADC and CANbus interface for remote monitoring and industrial fieldbus communication.
Portable Medical Devices
The integrated FPU and DSP instructions enable real-time processing of sensor data for handheld diagnostic tools.
USB Peripherals
Includes a crystal-less USB 2.0 full-speed interface for simplified connectivity in compact consumer 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, USB
Mounting Type Surface Mount
Number of I/O 26
Core Processor ARM Cortex-M4
Package / Case 32-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 32-UFQFPN (5x5)
Voltage - Supply (Vcc/Vdd) 1.71V ~ 3.6V

Getting Started

Development is best supported by the NUCLEO-L432KC board, which provides an integrated ST-LINK debugger and Arduino Nano-compatible headers. Engineers can utilize the STM32CubeIDE ecosystem for configuration and the HAL/LL libraries to manage the extensive peripheral set.

Dev Boards

Development boards and breakout modules featuring the STM32L432KCU6 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 3,059 in stock

STM32L432 Family

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

Part Number Flash Stock
STM32L432KCU6 (this part) 256KB 7,265
STM32L432KBU6 128KB 2,478

Also Consider

STM32L432KBU6 STMicroelectronics - A direct alternative with 128KB Flash instead of 256KB for cost-sensitive designs requiring less storage.
ATSAMD21E18A-MU MCHPMicrochip Technology - A comparable 32-pin Cortex-M0+ MCU that offers a simpler architecture for less computationally intensive tasks.
STM32L412KBU6 STMicroelectronics - An even lower-cost L4 series option with a reduced peripheral set and smaller 128KB Flash memory.
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