STMicroelectronics STM32L4Q5VGT6P

Overview

STM32L4Q5VGT6P from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, 120 MHz max frequency, 1-MB Flash, 320-KB SRAM, LCD-TFT controller, AES+PKA cryptographic accelerators, and integrated external SMPS support. It operates from 1.71 V to 3.6 V across –40 °C to 125 °C and delivers 150 DMIPS at 41 µA/MHz in SMPS mode - ideal for battery-powered industrial HMI, portable medical monitors, and smart metering with graphical display.

For engineers reviewing the STM32L4Q5VGT6P datasheet, STM32L4Q5VGT6P pinout, STM32L4Q5VGT6P application, or STM32L4Q5VGT6P equivalent, key selection criteria include verified low-power mode current (190 nA Standby + RTC), dual-bank read-while-write Flash, hardware parity-checked SRAM, Octo-SPI interface capability, and LCD-TFT controller timing compliance for 800×480 RGB displays.

Technical Context

This MCU integrates an adaptive real-time accelerator (ART) enabling zero-wait-state execution from Flash at 120 MHz, a multi-bus AHB matrix supporting concurrent peripheral access, and a dedicated interconnect for cryptographic engines (AES, PKA, HASH, RNG). Its power architecture includes three independent voltage regulators (LDO/SMPS/VREFBUF) and FlexPowerControl logic managing 7 low-power modes with sub-µA retention states.

The peripheral set features dual Octo-SPI interfaces for high-bandwidth external memory, a full-featured LCD-TFT controller (LTDC) with Chrom-ART DMA2D acceleration, and dual 12-bit ADCs sampling up to 5 Msps with hardware oversampling - all operating from a single 3.3 V supply with 5 V-tolerant GPIOs on most pins.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with 100 leads; thermally enhanced for industrial ambient operation up to 125 °C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L4R5VIT6, the STM32L4Q5VGT6P adds LCD-TFT and PKA at identical package size but trades 1 MB Flash; versus STM32U575ZIT6, it offers proven L4 ecosystem compatibility and lower power in deep sleep - making it optimal for cost-sensitive, display-integrated industrial devices where TrustZone is not mandated.

Availability

STM32L4Q5VGT6P is available at Aetrix Electronics and suitable for industrial HMI, portable medical monitors, smart electricity meters, and wireless sensor node gateways requiring stable component supply across extended temperature and long product lifecycles.

Supply support for STM32L4Q5VGT6P 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, cryptographic security, and graphical user interfaces - balancing energy efficiency with real-time performance for battery-constrained edge devices.

FAQ

What is the maximum operating temperature for STM32L4Q5VGT6P?

The STM32L4Q5VGT6P is rated for operation from –40 °C to +125 °C ambient temperature, validated per ST's industrial qualification standards. This extended range supports deployment in enclosed industrial enclosures, outdoor smart meters, and under-hood automotive auxiliary systems where thermal management is constrained.

Does STM32L4Q5VGT6P support hardware-based secure boot?

Yes - it supports secure boot via ROM-based bootloader with public key verification using the integrated PKA engine. The device validates signed firmware images against ECDSA keys stored in secure OTP memory, enforcing chain-of-trust before application code execution begins.

Can the LCD-TFT controller drive a 1024×600 display?

No - the LTDC supports up to 24-bit RGB output with maximum pixel clock of 65 MHz, limiting native resolution to 800×480 @ 60 Hz. Driving 1024×600 requires external timing controller or frame buffer compression; ST recommends STM32H7 series for higher-resolution displays.

Is external SMPS control mandatory for lowest power operation?

No - the MCU operates fully in LDO mode, but SMPS mode reduces active current to 41 µA/MHz (vs. 110 µA/MHz in LDO), cutting power by >60% at 80 MHz. External SMPS is optional but strongly recommended for battery longevity in always-on applications.