STMicroelectronics STM32L476JGY6TR

Overview

STM32L476JGY6TR 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, and external SMPS support - deployed in battery-powered medical sensors and portable industrial HMI systems.

For engineers reviewing the STM32L476JGY6TR datasheet, STM32L476JGY6TR pinout, STM32L476JGY6TR application, or STM32L476JGY6TR equivalent, key selection criteria include ultra-low-power run/stop modes (39 µA/MHz in SMPS mode), dual 12-bit DACs with sample-and-hold, hardware-accelerated capacitive touch sensing (24 channels), and CAN 2.0B interface for embedded control networks.

Technical Context

The device integrates an Adaptive Real-time Accelerator (ART™) enabling zero-wait-state execution from flash at 80 MHz, alongside three independent PLLs for system, USB, and audio clock domains. Its interconnect matrix decouples bus arbitration to sustain concurrent peripheral access without CPU stalls.

Power architecture includes dual-regulator support (integrated LDO + external SMPS), enabling dynamic voltage scaling between VDD = 1.71–3.6 V and VDD12 = 1.05–1.15 V, with dedicated low-power timers (LPTIM1/LPTIM2) operable in Stop 2 mode and 4 µs wake-up latency.

Key Specifications

Pinout & Package

STM32L476JGY6TR is housed in a 144-ball UFBGA package (10 × 10 mm, 0.8 mm pitch), optimized for space-constrained portable designs requiring high peripheral integration and thermal efficiency.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L432KCU6, the STM32L476JGY6TR provides 4× more flash, integrated LCD/CAN, and superior analog integration - justifying its use in feature-rich HMI devices; versus STM32L562VEY6TR, it trades hardware security for lower cost and simpler certification paths in non-critical industrial applications.

Availability

STM32L476JGY6TR is available at Aetrix Electronics and suitable for wearable health monitors, smart utility meters, industrial HMI panels, and portable gas detectors requiring stable component supply across multi-year production cycles.

Supply support for STM32L476JGY6TR 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-grade components.

The STM32L4 series targets ultra-low-power embedded applications demanding extended battery life, rich analog integration, and robust connectivity - balancing performance, energy efficiency, and peripheral density for next-generation IoT edge devices.

FAQ

What is the maximum operating temperature range for STM32L476JGY6TR?

The STM32L476JGY6TR is qualified for industrial operation from –40 °C to +85 °C. Extended temperature variants (e.g., STM32L476VGT6) support up to +105 °C, but the JGY6TR suffix specifically denotes the 85 °C grade per ST's ordering code documentation.

Does STM32L476JGY6TR support external memory interfaces?

Yes - it integrates a Flexible Static Memory Controller (FSMC) supporting SRAM, PSRAM, NOR, and NAND memories, plus a Quad SPI interface for high-speed serial flash. These are accessible via dedicated address/data buses on specific GPIO banks, with timing configurable via registers.

Can the internal SMPS regulator be used instead of an external one?

No - the STM32L476JGY6TR does not include an integrated SMPS. It supports external SMPS operation via VDD12 pin and associated control signals (e.g., VDD12_OK, VDD12_EN), but requires an external DC-DC converter such as the STMPxx series for SMPS-mode efficiency gains.

Is the LCD controller capable of driving segment-based displays only?

No - the integrated LCD controller supports both segment-based (8×40 or 4×44) and dot-matrix configurations using external bias generation. It includes a built-in step-up converter and software-programmable contrast control, eliminating need for external charge pumps in most monochrome LCD implementations.