STMicroelectronics STM32L4R5VIT6

Overview

STM32L4R5VIT6 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 LCD-TFT + MIPI DSI controller. It features 33 nA shutdown mode, 43 µA/MHz run current in SMPS mode, and supports capacitive touch sensing for battery-powered HMI applications.

For engineers reviewing the STM32L4R5VIT6 datasheet, STM32L4R5VIT6 pinout, STM32L4R5VIT6 application, or STM32L4R5VIT6 equivalent, key selection criteria include ultra-low-power operation across temperature ranges (–40 °C to 125 °C), dual-bank read-while-write Flash, hardware parity-protected SRAM, and integrated graphics acceleration via Chrom-ART and GFXMMU.

Technical Context

This MCU implements an adaptive real-time accelerator (ART) enabling zero-wait-state execution from Flash at 120 MHz, paired with a memory protection unit (MPU) and interconnect matrix for deterministic peripheral access. Its power architecture includes three voltage scaling modes, external SMPS support, and five low-power states with sub-µA retention capability.

The device integrates dual OctoSPI interfaces for high-speed external memory expansion, a 12-bit 5 Msps ADC with hardware oversampling up to 16-bit, two 12-bit DACs, two op-amps with PGA, and two ultra-low-power comparators - all operating from independent analog supplies for noise isolation.

Key Specifications

Pinout & Package

LQFP100 package (14 × 14 mm, 0.5 mm pitch) with exposed thermal pad; RoHS-compliant, industrial temperature grade (–40 °C to 125 °C).

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 STM32L4R5VIT6, the STM32L4R9VIT6 delivers superior graphics resource optimization for complex UIs, while the STM32L4R5ZIT6 provides greater I/O flexibility at the cost of larger PCB area - both retain identical power profiles and core performance.

Availability

STM32L4R5VIT6 is available at Aetrix Electronics and suitable for smart wearables, industrial HMIs, portable medical monitors, and energy-efficient smart meters requiring stable component supply across extended temperature and lifecycle requirements.

Supply support for STM32L4R5VIT6 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 ICs, sensors, and analog components for industrial, automotive, and consumer markets.

The STM32L4 series targets ultra-low-power embedded applications demanding rich peripherals, graphics capability, and robust security - optimized for battery-operated and thermally constrained environments.

FAQ

What is the maximum operating temperature for STM32L4R5VIT6?

The STM32L4R5VIT6 is qualified for industrial temperature range: –40 °C to +125 °C ambient. This rating is validated per JEDEC JESD22-A108 and applies to all LQFP100 variants in the STM32L4R5xx family, with thermal derating specified in Section 7.7 of DS12023 Rev 5.

Does STM32L4R5VIT6 support external SDRAM via FSMC?

No. The STM32L4R5VIT6 does not integrate a Flexible Static Memory Controller (FSMC). Instead, it provides two OctoSPI interfaces supporting NOR, PSRAM, NAND, and FRAM memories - with XIP capability and dual-bank operation - but no native SDRAM controller.

Can the MIPI DSI interface drive a 1080p display?

No. The MIPI DSI Host supports two lanes at up to 500 Mbit/s each (1 Gbit/s aggregate), sufficient for WVGA (800×480) or WXGA (1280×800) at 60 Hz. Driving full HD (1920×1080) requires higher bandwidth and is not supported by this implementation per Section 3.26 of the datasheet.

Is the 2 MB Flash organized as a single bank or dual banks?

The 2 MB Flash is physically organized into two independent 1 MB banks, enabling true read-while-write (RWW) operation: one bank can be executed from while the other is erased or programmed. This architecture is mandatory for seamless firmware updates and is confirmed in Section 3.4 of DS12023 Rev 5.