STMicroelectronics STM32L476VCT6TR

Overview

STM32L476VCT6TR 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 STM32L476VCT6TR datasheet, STM32L476VCT6TR pinout, STM32L476VCT6TR application, or STM32L476VCT6TR equivalent, key selection criteria include ultra-low-power mode current (e.g., 30 nA Shutdown), dual-bank flash for seamless firmware updates, LCD 8×40 drive capability, USB OTG FS + LPUART wake-up, and hardware parity on 32 KB SRAM.

Technical Context

This MCU 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 FlexPowerControl architecture supports dynamic voltage scaling and multiple low-power modes - including Stop 2 (1.1 µA) with 4 µs wakeup and VBAT mode (300 nA) for RTC + backup registers.

The analog subsystem includes 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. Digital peripherals include CAN 2.0B, SDMMC, Quad SPI, and 20 communication interfaces, with DMA-driven DFSDM for sigma-delta sensor interfacing.

Key Specifications

Pinout & Package

LQFP100 package (14 × 14 mm, 0.5 mm pitch), RoHS-compliant ECOPACK2, with exposed thermal pad. Pin count: 100 leads; I/O count: 86 user GPIOs (including 14 with independent 1.08–3.6 V supply).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L475VGT6, the STM32L476VCT6TR trades crypto acceleration for integrated LCD driving - reducing BOM count in portable displays. Versus STM32L552VET6, it offers superior analog integration (DFSDM, op-amps) and lower cost, but lacks TrustZone and advanced security features.

Availability

STM32L476VCT6TR is available at Aetrix Electronics and suitable for wearable health monitors, smart utility meters, portable diagnostic tools, and industrial HMI panels requiring stable component supply across multi-year production cycles.

Supply support for STM32L476VCT6TR 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 automotive chips since 1987.

The STM32L4 series targets ultra-low-power embedded applications demanding extended battery life, rich analog integration, and robust real-time performance - especially in medical, metering, and portable industrial equipment.

FAQ

What is the maximum operating temperature range for STM32L476VCT6TR?

The STM32L476VCT6TR is qualified for industrial operation from –40 °C to +105 °C (ambient temperature). This rating is confirmed in Section 6.3.1 of DS10198 Rev 11 and applies to the LQFP100 package variant under specified voltage and derating conditions.

Does STM32L476VCT6TR support external SMPS control?

Yes - it integrates SMPS enable/control logic (VDD12 output) and supports external switch-mode power supplies via the VDD12 pin. When enabled, SMPS mode reduces active current to 39 µA/MHz, as measured in Table 28 of the datasheet under VDD12 = 1.10 V.

How many ADC channels does STM32L476VCT6TR support simultaneously?

It supports up to 16 external ADC input channels across its three independent 12-bit ADCs (ADC1–ADC3), with hardware oversampling up to 16-bit resolution. All three ADCs can operate concurrently in interleaved mode, as detailed in Section 3.15 and Table 2 of DS10198.

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

Yes - the integrated LCD controller supports static, 2-mux, 3-mux, and 4-mux segment LCDs up to 8×40 or 4×44 segments, with integrated step-up converter and software-programmable bias/voltage generation, per Section 3.21 and electrical specs in Table 6.3.25.