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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
STM32L476 Nucleo-64 STM32L4 ARM® Cortex®-M4 MCU 32-Bit Embedded Evaluation Board
Digi-Key Mouser 2,875 in stock
NUCLEO-L452RE STMicroelectronics
STM32L452 Nucleo-64 STM32L4 ARM® Cortex®-M4 MCU 32-Bit Embedded Evaluation Board
Digi-Key Mouser 546 in stock
NUCLEO-L452RE-P STMicroelectronics
STM32L452 Nucleo-64 STM32L4 ARM® Cortex®-M4 MCU 32-Bit Embedded Evaluation Board
Digi-Key Mouser 126 in stock
B-L4S5I-IOT01A STMicroelectronics
SPBTLE-RF, STM32L4S5 STM32L4+ 802.11 b/g/n (WiFi/WLAN/Wi-Fi 4), Bluetooth® Smart 4.x Low Energy (BLE) Transceiver 2.4GHz
Digi-Key 171 in stock
Part of STM32 family » STM32L432

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 3,203

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.