Introduction to STM32L476RET6
The STM32L476RET6 is a low-power microcontroller manufactured by STMicroelectronics. It belongs to the STM32L4 series and is based on a 32-bit ARM Cortex-M4 core. With its advanced features, ultra-low power consumption, and rich peripherals, this microcontroller is well-suited for a wide range of battery-powered applications, including portable devices, wearables, and IoT edge nodes.
Features
The STM32L476RET6 microcontroller offers a wide array of features, including:
- 32-bit ARM Cortex-M4 core running at up to 80 MHz
- 512 KB Flash memory and 128 KB RAM
- Ultra-low power consumption with multiple low-power modes
- Multiple communication interfaces, such as UART, SPI, I2C, and USB
- Advanced analog peripherals, including ADCs and DACs
- Timers and PWM outputs for precise timing and control
- Integrated AES hardware encryption for data security
- Graphics support with an integrated LCD controller
Peripherals
The STM32L476RET6 microcontroller provides a comprehensive set of peripherals, enhancing its versatility and functionality:
- UART: The microcontroller features multiple Universal Asynchronous Receiver-Transmitter (UART) interfaces, enabling serial communication with other devices. These interfaces support various baud rates and provide essential serial communication capabilities.
- SPI: The microcontroller includes Serial Peripheral Interface (SPI) ports, facilitating high-speed synchronous communication with external devices. This interface is commonly used for communication with sensors, displays, and memory devices.
- I2C: The microcontroller offers Inter-Integrated Circuit (I2C) interfaces, enabling communication with peripheral devices using a two-wire serial bus. This interface supports both master and slave modes and is commonly used for sensor and peripheral communication.
- USB: The microcontroller supports USB interfaces, allowing connectivity with various USB devices. It includes USB OTG (On-The-Go) and USB Host/Device interfaces, providing flexible and versatile USB communication capabilities.
- ADCs and DACs: The microcontroller integrates high-resolution Analog-to-Digital Converters (ADCs) for precise conversion of analog signals into digital values. It also provides Digital-to-Analog Converters (DACs) for accurate conversion of digital data back into analog signals. These peripherals are essential for applications requiring analog signal processing and control.
- Timers and PWM outputs: The microcontroller offers timers and Pulse Width Modulation (PWM) outputs for precise timing and control. These peripherals are useful for applications that require accurate timing, such as motor control, power management, and signal generation.
- AES encryption: The microcontroller includes an integrated AES (Advanced Encryption Standard) hardware accelerator, providing hardware-based encryption and decryption capabilities. This feature enhances the security of data transfer and storage in applications that require data protection.
- LCD controller: The microcontroller integrates an LCD controller, enabling direct driving of graphical displays. This feature simplifies the design and implementation of graphical user interfaces (GUIs) in applications such as wearables, home automation, and industrial control systems.
Development Tools
STMicroelectronics provides various development tools for developers working with the STM32L476RET6 microcontroller:
- STM32CubeMX: A graphical tool that simplifies microcontroller configuration and generates initialization code based on the selected configuration. It streamlines the development process and accelerates project setup.
- STM32CubeIDE: An integrated development environment (IDE) designed specifically for STM32 microcontrollers. It offers a comprehensive development platform with features like code editing, compilation, debugging, and system profiling.
- Nucleo development boards: Development boards that incorporate the STM32L476RET6 microcontroller and provide easy access to its pins and peripherals. These boards facilitate rapid prototyping, evaluation, and development of designs.
Specifications
The following table provides an overview of the key specifications for the STM32L476RET6 microcontroller:
| Parameter | Value |
| Core | ARM Cortex-M4 |
| Clock speed | Up to 80 MHz |
| Flash memory | 512 KB |
| RAM | 128 KB |
| UART interfaces | Multiple |
| SPI interfaces | Multiple |
| I2C interfaces | Multiple |
| USB interfaces | USB OTG, Host/Device |
| ADCs | Up to 12 channels, 12-bit resolution |
| DACs | Up to 2 channels, 12-bit resolution |
| AES encryption | Integrated |
| LCD controller | Integrated |
Conclusion
The STM32L476RET6 microcontroller is a low-power device with advanced features and rich peripherals. Its 32-bit ARM Cortex-M4 core, combined with ultra-low power consumption and extensive communication interfaces, provides developers with a powerful platform for battery-powered applications. With additional features like advanced analog peripherals, AES hardware encryption, and an integrated LCD controller, the STM32L476RET6 microcontroller meets the requirements of energyefficient portable devices, wearables, and IoT edge nodes.
Please note that the information provided here is based on the available knowledge up until September 2021, and there may have been updates or newer versions of the product since then. It's always recommended to refer to the official documentation and specifications from STMicroelectronics for the most accurate and up-to-date information.
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Chip ic distributor ARM MCU STM32L476RET6 STM32L476 STM32L LQFP-64 microcontroller Bom Service Images
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