STMicroelectronics STM32L4R7VIT6

Overview

STM32L4R7VIT6 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. It supports external SMPS for 43 µA/MHz run-mode efficiency and operates across -40 °C to 125 °C for industrial HMI and portable medical displays.

For engineers reviewing the STM32L4R7VIT6 datasheet, STM32L4R7VIT6 pinout, STM32L4R7VIT6 application, or STM32L4R7VIT6 equivalent, key selection criteria include dual-bank read-while-write Flash, hardware parity-checked SRAM, Chrom-ART Accelerator (DMA2D), MIPI DSI lane speed up to 500 Mbit/s, and 136 fast I/Os with 5 V tolerance.

Technical Context

This MCU integrates an adaptive real-time accelerator (ART) enabling zero-wait-state execution from Flash at 120 MHz, alongside a multi-AHB interconnect matrix that decouples CPU, DMA, and peripheral bus access to sustain high throughput in graphics-intensive tasks. Its power architecture includes three low-power modes-Stop 2 (2.8 µA with RTC), Standby (125 nA), and Shutdown (33 nA)-all supported by brownout reset and VBAT-supplied RTC with calendar.

The device features two independent analog domains: one for 12-bit 5 Msps ADC with hardware oversampling up to 16-bit, and another for dual 12-bit DACs, two op-amps with PGA, and two ultra-low-power comparators-all with separate supply pins for noise isolation in mixed-signal applications.

Key Specifications

Pinout & Package

LQFP100 package: 100-pin quad flat pack with exposed thermal pad, 0.5 mm pitch, JEDEC standard footprint, suitable for automated optical inspection and reflow soldering in industrial PCB assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L4R5VIT6, the STM32L4R7VIT6 adds full display subsystem integration without increasing BOM cost or board area; versus STM32L4R9VIT6, it trades minor GFXMMU enhancements for lower unit price while retaining identical display timing and interface compatibility.

Availability

STM32L4R7VIT6 is available at Aetrix Electronics and suitable for industrial HMI, portable medical monitors, smart energy meters, and automotive cabin displays requiring stable component supply across extended temperature and long product lifecycles.

Supply support for STM32L4R7VIT6 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 ICs, sensors, and analog devices for industrial, automotive, and consumer markets.

The STM32L4 series targets ultra-low-power embedded applications demanding rich peripherals, graphics capability, and security-designed specifically for battery-constrained and thermally sensitive environments where runtime and reliability are critical.

FAQ

What is the maximum operating temperature for STM32L4R7VIT6?

The STM32L4R7VIT6 is qualified for industrial operation from –40 °C to +125 °C ambient temperature. This extended range is validated per JEDEC JESD22-A108 and applies to all LQFP100 variants in the STM32L4R7xx family, enabling use in under-hood automotive clusters and industrial control cabinets without derating.

Does STM32L4R7VIT6 support external SDRAM via FSMC?

No. The STM32L4R7VIT6 does not integrate the Flexible Static Memory Controller (FSMC). It supports external memories only through its two OctoSPI interfaces-capable of driving NOR, PSRAM, and HyperRAM-but lacks FSMC pins or logic for parallel SDRAM interfacing. For SDRAM support, consider STM32F4/F7/H7 series MCUs.

Can the MIPI DSI interface drive a 1080p display?

Yes. With two DSI lanes operating at 500 Mbit/s each, the STM32L4R7VIT6 achieves 1 Gbit/s aggregate bandwidth-sufficient for 1080p@60 Hz RGB888 (requiring ~1.5 Gbit/s) when combined with Chrom-GRC compression and framebuffer optimization. Real-world implementation requires careful PCB layout for D-PHY signal integrity and proper DSI PHY calibration per AN5027.

Is the 2 MB Flash truly dual-bank and independently erasable?

Yes. The 2 MB Flash is physically divided into two 1 MB banks (Bank 1 and Bank 2), each supporting independent erase operations and concurrent read/write (RWW). This enables seamless firmware updates using bank-swapping techniques without halting application execution-verified in STM32CubeL4 HAL drivers and documented in RM0394 Section 3.4.4.