STMicroelectronics STM32L476G-DISCO

Overview

STM32L476G-DISCO from STMicroelectronics is an evaluation board built around the STM32L476RG microcontroller - an ultra-low-power Arm® Cortex®-M4 MCU with FPU, 80 MHz max frequency, 1 MB Flash, 128 KB SRAM, USB OTG FS, LCD controller, and integrated SMPS support. It enables rapid prototyping of battery-powered IoT sensors, portable medical devices, and energy-harvesting edge nodes requiring sub-μA standby operation and rich analog/peripheral integration.

For engineers reviewing the STM32L476G-DISCO datasheet, STM32L476G-DISCO pinout, STM32L476G-DISCO application, or STM32L476G-DISCO equivalent, this page delivers verified technical context, key specifications, supply readiness, and manufacturer-specific design guidance - all grounded in ST's official DS10198 Rev 11 production data and board user manual UM1974.

Technical Context

The STM32L476G-DISCO integrates the STM32L476RG MCU in LQFP64 package, featuring FlexPowerControl architecture with 30 nA shutdown mode, 420 nA stop mode with RTC, and 39 µA/MHz run mode using external SMPS. Its hardware includes an onboard ST-LINK/V2-1 debugger, MEMS accelerometer (LSM303AGR), digital microphone (MP34DT05), RGB LED, user pushbuttons, and Arduino Uno V3 and ST morpho headers for expansion.

It supports direct development of low-power applications via configurable power domains (VBAT, VDD, VDDA, VREF+, VSSA), real-time clock with calendar, LCD segment driver (4×44 or 8×40), and capacitive touch sensing (24 channels). The board ships preloaded with firmware demonstrating sensor fusion, USB HID, and ultra-low-power modes including Stop 2 wake-up via LPUART.

Key Specifications

Availability

STM32L476G-DISCO is available at Aetrix Electronics and suitable for industrial IoT gateways, wearable health monitors, smart metering endpoints, and battery-backed data loggers requiring stable component supply, long-term lifecycle support, and validated reference hardware.

Supply support for STM32L476G-DISCO includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and analog/mixed-signal solutions for automotive, industrial, and consumer markets.

The STM32L4 series targets ultra-low-power embedded applications demanding high performance per µA, with the L476 variant optimized for mixed-signal edge nodes requiring LCD, capacitive touch, USB, and robust analog front-ends - all while maintaining sub-µA sleep states.

FAQ

Does STM32L476G-DISCO include an onboard debugger?

Yes - it integrates ST-LINK/V2-1, a full-speed USB debug probe supporting SWD and JTAG interfaces. It provides seamless programming and real-time debugging of the STM32L476RG MCU without external tools, and exposes virtual COM port and mass storage device functionality for firmware updates and data streaming.

What sensors are included on the STM32L476G-DISCO board?

The board features an LSM303AGR eCompass (3-axis accelerometer + 3-axis magnetometer) and an MP34DT05 digital MEMS microphone. Both are connected via I²C and SPI respectively, with dedicated interrupt lines and example firmware for motion detection, orientation estimation, and audio capture in ultra-low-power modes.

Can the STM32L476G-DISCO drive an external LCD panel?

Yes - the onboard STM32L476RG MCU includes a dedicated LCD controller supporting up to 8×40 or 4×44 segments with internal step-up converter. The board exposes LCD segment/common pins via test points and supports direct connection to segment-based displays, with example code for static/dynamic bias configurations and contrast control.

Is external SMPS support implemented on the STM32L476G-DISCO?

Yes - the board routes VDD12 to the MCU's SMPS input pin and includes jumpers (JP4/JP5) to select between internal LDO and external SMPS power supply. This allows engineers to validate real-world efficiency gains: 39 µA/MHz (SMPS) vs. 100 µA/MHz (LDO) at 3.3 V, critical for multi-year battery operation.