STMicroelectronics STM32L486VGT6TR

Overview

STM32L486VGT6TR 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, LCD controller, external SMPS support, and hardware AES encryption. It targets battery-powered industrial sensors, portable medical devices, and smart metering systems requiring long runtime and secure firmware execution.

For engineers reviewing the STM32L486VGT6TR datasheet, STM32L486VGT6TR pinout, STM32L486VGT6TR application, or STM32L486VGT6TR equivalent, key selection criteria include its 39 µA/MHz SMPS-enabled run mode, 420 nA standby-with-RTC current, 114 GPIOs (most 5 V-tolerant), and integrated LCD driver supporting 8×40 segments - critical for low-power HMI designs.

Technical Context

The device integrates an Adaptive Real-time Accelerator (ART™) enabling zero-wait-state execution from flash memory, coupled with a memory protection unit (MPU) and dual-bank flash supporting read-while-write and proprietary code readout protection. Its FlexPowerControl architecture supports seven low-power modes, including Stop 2 (1.1 µA) and Shutdown (30 nA), with 45 µs wake-up latency.

Peripherals include three 12-bit ADCs (5 Msps, hardware oversampling to 16-bit), two 12-bit DACs, two op-amps with PGA, two ultra-low-power comparators, and four digital filters for sigma-delta modulators - all operating from independent analog supplies for noise isolation and precision sensing.

Key Specifications

Pinout & Package

LQFP100 package (14 × 14 mm, 0.5 mm pitch), 100-pin quad flat pack with exposed thermal pad - compatible with standard reflow profiles and automated optical inspection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L476VGT6, the STM32L486VGT6TR adds essential display and power efficiency features; versus STM32L562VEJ6, it trades advanced security for lower power and integrated HMI - making it optimal for cost-sensitive, battery-powered display interfaces.

Availability

STM32L486VGT6TR is available at Aetrix Electronics and suitable for smart utility meters, portable medical monitors, industrial wireless sensor nodes, and smart home thermostats requiring stable component supply across multi-year production cycles.

Supply support for STM32L486VGT6TR 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 extended battery life, rich peripheral integration, and robust security - optimized for IoT endpoints, wearables, and industrial monitoring systems.

FAQ

What is the maximum operating temperature range for STM32L486VGT6TR?

The STM32L486VGT6TR is qualified for industrial operation from –40 °C to +85 °C, with extended variants supporting +105 °C and +125 °C. This rating is confirmed in Section 6.3.1 of DS10199 Rev 8 and applies to the LQFP100 package under specified voltage and derating conditions.

Does STM32L486VGT6TR support external memory expansion?

Yes, it includes a Flexible Static Memory Controller (FSMC) supporting SRAM, PSRAM, NOR, and NAND memories, plus a Quad SPI interface for high-speed serial flash. These interfaces are electrically validated per Section 3.36 and 3.37 of the datasheet, with timing parameters defined in Table 6.3.29.

How many I/O pins are 5 V-tolerant on STM32L486VGT6TR?

Up to 114 fast I/Os are available, and the majority are 5 V-tolerant when VDD is ≥ 2.0 V, as specified in Section 6.3.14 of DS10199 Rev 8. This tolerance is verified across all 100 pins of the LQFP100 package except dedicated analog and USB pins.

Is the LCD controller capable of driving segment-based displays without external components?

Yes, the integrated LCD controller supports 8×40 or 4×44 segment configurations and includes an internal step-up converter that generates the required LCD bias voltage from the main 3.3 V supply - eliminating external charge pumps or DC-DC converters per Section 3.21 and Table 6.3.25.