STMicroelectronics STM32L476JGY6PTR

Overview

STM32L476JGY6PTR from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, delivering 100 DMIPS at 80 MHz, featuring 1 MB flash, 128 KB SRAM, USB OTG FS, integrated LCD controller (8×40), and external SMPS support. It operates from 1.71–3.6 V across –40 °C to 105 °C and targets battery-powered industrial sensors and portable medical devices requiring long runtime and rich peripheral integration.

For engineers reviewing the STM32L476JGY6PTR datasheet, STM32L476JGY6PTR pinout, STM32L476JGY6PTR application, or STM32L476JGY6PTR equivalent, key selection criteria include its 39 µA/MHz SMPS-enabled run mode, dual 12-bit DACs with sample-and-hold, 3× 12-bit ADCs (5 Msps), CAN 2.0B interface, and LQFP64 package compatibility for space-constrained designs.

Technical Context

The device integrates an Adaptive Real-time Accelerator (ART™) enabling zero-wait-state execution from flash at 80 MHz, alongside a memory protection unit (MPU) and interconnect matrix for deterministic peripheral arbitration. Its power architecture supports FlexPowerControl with five low-power modes - including 30 nA Shutdown and 420 nA Standby with RTC - managed via dedicated voltage regulator and BOR circuitry.

Clock system includes three PLLs (for system/USB/audio), four oscillator sources (4–48 MHz HSE, 32 kHz LSE, 16 MHz HSI, 32 kHz LSI), and auto-trimmed MSI (±0.25%) for precision timing without external crystals. Analog subsystem features two rail-to-rail op-amps with PGA, two ultra-low-power comparators, and 24-channel capacitive touch sensing.

Key Specifications

Pinout & Package

LQFP64 package: 64-pin quad flat pack, 0.5 mm pitch, exposed thermal pad, RoHS-compliant and ECOPACK2 certified.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L476JGY6PTR, STM32L432KCU6 trades peripheral density and LCD support for lower cost and smaller size, while STM32L552RET6 replaces ultra-low-power analog integration with hardware security features - making the L476 optimal for display-equipped industrial sensors where power efficiency and mixed-signal integration are primary.

Availability

STM32L476JGY6PTR is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, smart utility meters, and asset tracking beacons requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for STM32L476JGY6PTR 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 management ICs, sensors, and automotive semiconductors since 1987.

The STM32L4 series targets ultra-low-power embedded applications demanding high performance per microwatt, with design focus on battery-operated industrial, healthcare, and metering systems requiring rich analog integration and long-term reliability.

FAQ

What is the maximum operating frequency and corresponding performance metric?

The STM32L476JGY6PTR runs at up to 80 MHz with its Arm Cortex-M4 core and achieves 100 DMIPS (Dhrystone 2.1) and 273.55 CoreMark®. Its ART Accelerator™ enables zero-wait-state execution from flash, delivering 3.42 CoreMark/MHz - verified under conditions of Cache ON and Prefetch OFF per DS10198 Rev 11 Section 3.2.

Does this MCU support external DC-DC converters, and how is it implemented?

Yes - the STM32L476JGY6PTR includes dedicated VDD12 and VDD12_IO pins and internal control logic to interface with external switched-mode power supplies (SMPS). When enabled, SMPS operation reduces active current to 39 µA/MHz at 3.3 V, improving system efficiency by ~30% versus LDO-only configurations, as specified in Section 3.9.3 and Table 28 of DS10198 Rev 11.

What LCD capabilities does the STM32L476JGY6PTR provide, and what display sizes are supported?

The MCU integrates a hardware LCD controller supporting up to 8×40 or 4×44 segment drives with an internal step-up converter. It requires no external bias generator and supports static, 2-mux, 3-mux, and 4-mux configurations. This enables direct driving of segmented LCDs used in industrial HMIs and portable instrumentation, as detailed in Section 3.21 and Figure 122 of DS10198 Rev 11.

How many analog-to-digital converters are included, and what are their key resolution and sampling specifications?

The STM32L476JGY6PTR includes three independent 12-bit ADCs, each capable of 5 Msps (mega-samples per second) with hardware oversampling up to 16-bit effective resolution. They operate with independent supply domains and support simultaneous sampling across multiple channels - critical for synchronized multi-sensor acquisition in industrial monitoring applications per Section 3.15 and Table 18 of DS10198 Rev 11.