STMicroelectronics STM32L4R5VGT6

Overview

STM32L4R5VGT6 from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, 120 MHz max frequency, 2 MB Flash, 640 KB SRAM, and integrated MIPI DSI host controller + LCD-TFT controller - designed for battery-powered graphical HMI applications in industrial control panels and portable medical devices.

For engineers reviewing the STM32L4R5VGT6 datasheet, STM32L4R5VGT6 pinout, STM32L4R5VGT6 application, or STM32L4R5VGT6 equivalent, key selection criteria include its 43 µA/MHz SMPS-run efficiency, dual-bank read-while-write Flash, Chrom-ART Accelerator (DMA2D), 24-channel capacitive touch sensing, and -40°C to +125°C extended temperature grade.

Technical Context

The device integrates an adaptive real-time accelerator (ART) enabling zero-wait-state execution from Flash at 120 MHz, and features a multi-AHB interconnect matrix supporting concurrent access to Flash, SRAM, and peripherals. Its power architecture includes three low-power modes (Stop 2, Standby with RTC, Shutdown) with sub-100 nA quiescent current and 5 µs wakeup latency.

Graphics subsystem includes MIPI DSI Host (dual-lane, 500 Mbit/s/lane), LTDC controller with layer blending, Chrom-GRC (GFXMMU) for memory optimization, and DMA2D for hardware-accelerated 2D rendering - all operating under independent voltage domains for flexible power management.

Key Specifications

Pinout & Package

LQFP100 package: 14 × 14 mm body, 0.5 mm lead pitch, exposed thermal pad, rated for -40°C to +125°C operation.

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 STM32L4R5VGT6, STM32L4R9VIT6 trades graphics capability for reduced cost and footprint in non-display applications, while STM32U575ZIT6 delivers enhanced security and efficiency at the expense of legacy peripheral compatibility and toolchain migration effort.

Availability

STM32L4R5VGT6 is available at Aetrix Electronics and suitable for industrial HMI panels, portable medical monitors, smart energy meters, and wireless gateway hubs requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for STM32L4R5VGT6 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 rich peripherals, graphical capability, and robust security - optimized for battery-operated industrial, medical, and metering systems where energy efficiency and feature integration are critical.

FAQ

What is the maximum operating frequency and corresponding performance metric?

The STM32L4R5VGT6 operates at up to 120 MHz using its Arm Cortex-M4 core with FPU. It achieves 150 DMIPS (Dhrystone 2.1) and 409.20 CoreMark® (3.41 CoreMark/MHz). Performance is sustained via the ART Accelerator, which enables zero-wait-state execution from Flash memory across all operating voltages and temperatures.

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

Yes - it supports external memory via two independent OctoSPI interfaces (capable of XIP from NOR/FRAM/PSRAM) and a Flexible Static Memory Controller (FSMC) for SRAM, PSRAM, NOR, NAND, and FRAM. The FSMC provides 8-/16-bit data bus widths and programmable timing, while OctoSPI offers higher bandwidth for code execution and large buffer storage.

How does the power management system enable ultra-low-power operation?

It implements FlexPowerControl with seven low-power modes: Shutdown (33 nA), Standby with RTC (420 nA), Stop 2 with RTC (2.8 µA), and Run modes down to 43 µA/MHz using external SMPS. Brownout reset (BOR) operates in all modes except Shutdown, and the Batch Acquisition Mode (BAM) allows peripherals to run autonomously while the CPU sleeps - minimizing active time.

What display interfaces does the STM32L4R5VGT6 support, and what resolutions are achievable?

It integrates both an MIPI DSI Host controller (dual-lane, 500 Mbit/s per lane) and an LCD-TFT controller (LTDC) supporting up to WXGA (1280×800) resolution with alpha blending, layer composition, and dithering. The Chrom-ART Accelerator (DMA2D) handles 2D graphics operations, and Chrom-GRC (GFXMMU) optimizes memory usage by up to 20%, enabling efficient use of internal SRAM for framebuffers.