Part Number: STM32L476MGY6TR

Manufacturer: STMicroelectronics

Description: IC MCU 32BIT 1MB FLASH 81WLCSP

Shipped from: Shenzhen/HK Warehouse

Stock Available: Check with us

Technical Specifications of STM32L476MGY6TR

Datasheet  STM32L476MGY6TR datasheet
Category Integrated Circuits (ICs)
Family Embedded – Microcontrollers
Manufacturer STMicroelectronics
Series STM32L4
Packaging *
Part Status Active
Core Processor ARM? Cortex?-M4
Core Size 32-Bit
Speed 80MHz
Peripherals Brown-out Detect/Reset, DMA, LCD, PWM, WDT
Number of I/O 65
Program Memory Size 1MB (1M x 8)
Program Memory Type FLASH
RAM Size 128K x 8
Voltage – Supply (Vcc/Vdd) 1.71 V ~ 3.6 V
Data Converters A/D 16x12b, D/A 2x12b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Package / Case *
Supplier Device Package *


The STM32L476MGY6TR is a member of the STM32L476xx family, which is made up of ultra-low-power microcontrollers built on the high-performance Arm® Cortex®-M4 32-bit RISC core. You’ve come to the right place if you want to learn more about this microcontroller’s features, powers, and uses. In this detailed guide, we’ll look at the STM32L476MGY6TR and give you all the information you need to use it to its full potential.

Core Features and Specifications

  • Flash Memory: Up to 1 Mbyte
  • SRAM: Up to 128 Kbyte
  • External Memory Controller (FSMC): For static memories (on 100-pin and higher packages)
  • Quad SPI Flash Memories Interface: Available on all packages
  • Security Mechanisms: Readout protection, write protection, code readout protection, and Firewall

Memory and Storage in STM32L476MGY6TR

Memory and storage are important parts of any microcontroller, and the STM32L476MGY6TR has a strong set of both that can be used in a wide range of apps. In this part, we’ll talk in depth about Flash memory, SRAM, the External Memory Controller (FSMC), and the Quad SPI Flash Memories Interface.

Flash Memory

The STM32L476MGY6TR’s Flash memory is critical for storing program code and non-volatile data. Here are the important details

  • Capacity: The STM32L476MGY6TR has a Flash memory capacity of up to 1 Mbyte. You can keep your application code, firmware upgrades, and configuration settings in this large storage space.
  • Non-Volatile: Because flash memory is non-volatile, your program code and data remain intact even if the microcontroller loses power. This is critical for preserving the integrity of your apps.
  • Programming: The Flash memory can be programmed using a range of tools and programming languages offered by the STM32 platform. This adaptability makes it simple to create and upgrade firmware.
  • Code Execution: Your software code is stored in Flash memory. The Cortex-M4 processor executes instructions directly from Flash memory, ensuring that programs run quickly.

SRAM (Static Random-Access Memory)

SRAM is important because it lets your program briefly store data that it needs while it is running. What you need to know about SRAM in the STM32L476MGY6TR is as follows:

  • Capacity: This microcontroller has SRAM that can hold up to 128 Kbytes. This is a pretty big amount of SRAM, which lets you work with big numbers and variables.
  • High-Speed Access: SRAM can be read and written quickly, which makes it a good choice for temporarily storing data that is used often. This speed is important for data processing and apps that need to work in real time.
  • Data Manipulation: SRAM is where your program can quickly change data, do calculations, and store variables while it is running.

External Memory Controller (FSMC)

The External Memory Controller (FSMC) is extremely useful in applications that require a large amount of memory storage. What you need to know about the FSMC functionality is as follows:

  • Support for Static Memory: The FSMC is intended to interact with external static memory such as SRAM, NOR Flash, and NAND Flash. This is especially useful for applications requiring bigger storage capabilities.
  • Extended Storage: By attaching additional memory devices to the FSMC, you can greatly increase the available storage space beyond the native memory capacity of the microcontroller.
  • High-Speed Memory Access: The FSMC provides high-speed memory access, enabling for efficient data retrieval and storage.

Quad SPI Flash Memories Interface

The Quad SPI Flash Memories Interface is a customized interface developed for connecting to external Quad SPI Flash memory devices. The following are the main elements regarding this feature

  • Universal Compatibility: All STM32L476MGY6TR package variations include the Quad SPI interface, enabling universal compatibility.
  • It facilitates high-speed data transfer between the microcontroller and Quad SPI Flash memory devices, making it suited for applications requiring fast read and write operations.
  • Flexibility: The Quad SPI interface is adaptable and supports a wide range of Quad SPI Flash memory devices, allowing you to select the memory component that best meets the needs of your application.

Peripherals and Interfaces

The STM32L476MGY6TR has a diverse set of peripherals and interfaces, making it suited for a wide range of applications.

Analog-to-Digital Converters (ADCs)

Up to three fast 12-bit ADCs with a sampling rate of 5 Msps enable precise analog signal acquisition.

Comparators and Op-Amps

  • Two comparators and two operational amplifiers offer versatile signal conditioning capabilities.

Digital-to-Analog Converters (DACs)

  • Two DAC channels are available for analog signal generation.


  • Multiple timers, including general-purpose 32-bit and 16-bit timers, cater to a variety of timing and control tasks.

Capacitive Sensing

  • Up to 24 capacitive sensing channels provide touch and proximity sensing capabilities.

LCD Driver

  • An integrated LCD driver with internal step-up converter simplifies the implementation of LCD displays.

Communication Interfaces

  • The STM32L476MGY6TR supports various communication interfaces, enabling seamless connectivity.


  • Standard serial communication interfaces facilitate data exchange with other devices.

USB Support

  • Dedicated 3.3 V supply input for USB ensures reliable USB communication.

Operating Conditions

Temperature Ranges

  • The STM32L476MGY6TR can operate in a wide temperature range, making it suitable for both commercial and industrial applications.

Power Supply Options

  • Flexible power supply options, including internal LDO regulator and external SMPS supply, cater to diverse voltage requirements.

Power-Saving Modes

  • A comprehensive set of power-saving modes allows for designing energy-efficient applications.


Finally, the STM32L476MGY6TR is a true epitome of versatility, with a rich feature set that appeals to a wide range of applications. This microcontroller is a vital companion for engineers, developers, and amateurs alike, from the realm of low-power IoT devices to the intricate world of advanced industrial control systems. Understanding the outstanding capabilities and features of the STM32L476MGY6TR is critical to unlocking the true potential of your projects. Its power may bring your creative thoughts to life, allowing you to make them a reality.

But don’t let this golden opportunity pass you by. Contact ICRFQ, a major Chinese electronic component supplier noted for its competitive cost and accessibility, to get your hands on the STM32L476MGY6TR. Visit ICRFQ today to seize the moment and ride the tide of innovation. With the STM32L476MGY6TR, you can turn your thoughts into actual achievements – it’s time to dive into a world of endless possibilities.

4.8/5 - (397 votes)
Kevin Chen