STMicroelectronics STM32L476JGY7TR

Overview

STM32L476JGY7TR from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 80 MHz (100 DMIPS), featuring 1 MB flash, 128 KB SRAM, USB OTG FS, LCD controller, and integrated SMPS support. It delivers 39 µA/MHz in SMPS-run mode, 420 nA Standby with RTC, and supports capacitive touch sensing - deployed in battery-powered medical wearables requiring long runtime and display capability.

For engineers reviewing the STM32L476JGY7TR datasheet, STM32L476JGY7TR pinout, STM32L476JGY7TR application, or STM32L476JGY7TR equivalent, key selection criteria include ultra-low-power mode current (e.g., 30 nA Shutdown), dual-voltage I/O tolerance (up to 5 V), LCD 8×40 segment drive, hardware parity on 32 KB SRAM, and CAN 2.0B interface for industrial sensor nodes.

Technical Context

The device integrates an Adaptive Real-time Accelerator (ART Accelerator™) enabling zero-wait-state execution from flash at 80 MHz, alongside a 32-bit Cortex-M4 core with FPU and MPU. Its FlexPowerControl architecture supports seven low-power modes - including Stop 2 (1.1 µA) and Shutdown (30 nA) - with sub-microsecond wakeup (4 µs).

Clock system includes three PLLs (for system/USB/audio), internal multispeed oscillator auto-trimmed by LSE (<±0.25%), and dual crystal support (4–48 MHz main, 32 kHz RTC). Analog subsystem comprises three 12-bit ADCs (5 Msps), two 12-bit DACs, two op-amps with PGA, and two ultra-low-power comparators - all with independent supply domains.

Key Specifications

Pinout & Package

STM32L476JGY7TR is housed in a 144-ball UFBGA package (10 × 10 mm, 0.8 mm pitch), RoHS-compliant and ECOPACK2 certified. Pin functions are validated per STMicroelectronics DS10198 Rev 11, Section 4 ("Pinouts and pin description"), with ball mapping matching UFBGA144 mechanical drawing A02Y.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power ARM Cortex-M4 MCU applications.

Compared with STM32L476JGY7TR, STM32L433RCT6 trades LCD/SMPS capability for smaller size and cost, while STM32L562RET6 adds hardware security at the expense of active power efficiency - making the JGY7TR optimal for display-integrated, battery-constrained applications needing balanced performance and ultra-low quiescent current.

Availability

STM32L476JGY7TR is available at Aetrix Electronics and suitable for portable medical monitors, smart utility meters, industrial HMI panels, and wireless sensor node gateways requiring stable component supply across multi-year production cycles.

Supply support for STM32L476JGY7TR 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, designing and manufacturing microcontrollers, power management ICs, sensors, and analog components for industrial, automotive, and consumer markets.

The STM32L4 series targets ultra-low-power embedded applications demanding extended battery life, rich peripheral integration, and robust real-time performance - specifically engineered for wearable health devices, smart meters, and energy-harvesting systems.

FAQ

What is the maximum operating frequency and associated performance metric?

The STM32L476JGY7TR operates at up to 80 MHz with an Adaptive Real-time Accelerator (ART) enabling zero-wait-state flash execution. Its performance is rated at 100 DMIPS (Dhrystone 2.1) and 273.55 CoreMark® (3.42 CoreMark/MHz), verified under conditions specified in ST's DS10198 Rev 11, Section 3.2. This reflects deterministic real-time throughput for control loops and signal processing.

Does this MCU support external memory expansion, and which interfaces are available?

Yes, STM32L476JGY7TR supports external memory via Flexible Static Memory Controller (FSMC) for NOR, PSRAM, and NAND, plus Quad-SPI for serial flash. FSMC provides parallel 8-/16-bit addressing with wait-state control, while Quad-SPI offers 4-line x4 data transfer up to 80 MHz - both validated in DS10198 Rev 11 Sections 3.35 and 3.36 for seamless code/data offload.

What LCD configurations does the integrated controller support, and what voltage requirements apply?

The integrated LCD controller supports 8×40 or 4×44 segment configurations with built-in step-up converter, eliminating need for external boost IC. It operates from 2.4–3.6 V supply (VDD), generating up to 5.2 V internally for LCD bias - confirmed in DS10198 Rev 11 Section 3.21 and Table 6.3.25, supporting static and multiplexed segment displays.

How many low-power modes are implemented, and what are their typical current draws?

Seven low-power modes are implemented: Shutdown (30 nA), Standby (120 nA), Standby with RTC (420 nA), Stop 2 (1.1 µA), Stop 2 with RTC (1.4 µA), Stop 1 (1.9 µA), and Low-power Run (110 µA). Values are measured at 25°C with VDD = 3.3 V, per DS10198 Rev 11 Table 4 and Section 6.3.4 - enabling precise power budgeting for battery-life modeling.