EmbeddedRelated.com
    Parts   Microcontrollers  ARM Cortex-M4    STM32 Family    STM32L4    STM32L4S5QII6
STM32L4S5QII6

STM32L4S5QII6

STMicroelectronics
ARM® Cortex®-M4 STM32L4 Microcontroller IC 32-Bit 120MHz 2MB (2M x 8) FLASH 132-UFBGA (7x7)
Active48,666 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The STM32L4S5QII6 is a high-performance ultra-low-power microcontroller based on the ARM Cortex-M4 core operating at 120MHz. It features 2MB of Flash memory and 640KB of RAM, making it suitable for complex embedded applications that require significant memory overhead within a tight power budget.

Why Choose This Part

This MCU provides a massive 640KB RAM and 2MB Flash in a compact 7x7mm UFBGA132 package. It includes specialized hardware accelerators for graphics and security that offload the main CPU, ensuring fluid UI performance and robust encryption without sacrificing the 110 uA/MHz power efficiency.

Applications

Secure IoT Endpoints
Utilizes the integrated AES and HASH hardware accelerators alongside a True Random Number Generator for secure data transmission and storage.
Wearable Graphic Displays
Leverages the Chrom-ART Accelerator (DMA2D), Chrom-GRC (GFXMMU), and MIPI DSI host to drive high-resolution small-form-factor displays.
Industrial Sensor Nodes
Uses the 16x12-bit ADC and Batch Acquisition Mode (BAM) to process sensor data efficiently while the CPU remains in low-power states.
Portable Medical Devices
Benefits from ultra-low power modes like 33nA Shutdown and 125nA Standby to extend battery life in handheld diagnostic tools.

Key Specifications

Speed 120MHz
RAM Size 640K x 8
Core Size 32-Bit
Peripherals Brown-out Detect/Reset, DMA, POR, PWM, WDT
Connectivity CANbus, EBI/EMI, I2C, IrDA, LINbus, MMC/SD, SAI, SPI, UART/USART, USB OTG
Mounting Type Surface Mount
Number of I/O 110
Core Processor ARM Cortex-M4
Package / Case 132-UFBGA
Data Converters A/D 16x12b; D/A 2x12b
Oscillator Type Internal
Program Memory Size 2MB (2M x 8)
Program Memory Type FLASH
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 132-UFBGA (7x7)
Voltage - Supply (Vcc/Vdd) 1.71V ~ 3.6V

Getting Started

Start development using the STM32CubeL4 software suite and an ST-LINK/V3 debugger. The part is fully supported in major IDEs including STM32CubeIDE, Keil MDK, and IAR Embedded Workbench, with hardware abstraction layers (HAL) available to simplify peripheral configuration.

Dev Boards

Development boards and breakout modules featuring the STM32L4S5QII6 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-L452RE STMicroelectronics
STM32L452 Nucleo-64 STM32L4 ARM® Cortex®-M4 MCU 32-Bit Embedded Evaluation Board
Digi-Key Mouser 546 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
NUCLEO-L476RG STMicroelectronics
Development Boards & Kits - ARM STM32 Nucleo-64 development board STM32L476RG MCU, supports Arduino & ST morpho
Digi-Key Mouser 3,931 in stock
NUCLEO-L496ZG STMicroelectronics
STM32L496 Nucleo-144 STM32L4 ARM® Cortex®-M4 MCU 32-Bit Embedded Evaluation Board
Digi-Key 93 in stock
Part of STM32 family » STM32L4

STM32L4 Family

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

Part Number I/O Pins Package Stock
STM32L4S5QII6 (this part) 110 UFBGA-132 48,666
STM32L4S5VIT6 83 LQFP-100 1,354
STM32L4R5VIT6 83 LQFP-100 324
Also available as: STM32L4P5CGT6, STM32L4R5ZIT6, STM32L4R5QII6, STM32L4R5ZGT6

Also Consider

STM32L4S5VIT6 STMicroelectronics - Offers the same internal peripherals and memory in a 100-pin LQFP leaded package for easier PCB assembly and prototyping.

Categories

Microcontrollers > ARM Cortex-M4 Microcontrollers > STMicroelectronics Wearables & Medical > Ultra-Low Power MCUs IoT & Smart Devices > IoT Security & Crypto