STMicroelectronics STM32L4Q5VGY6PTR

Overview

STM32L4Q5VGY6PTR 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, and integrated LCD-TFT controller, AES+PKA cryptographic accelerators, and external SMPS support - deployed in battery-powered medical sensors, portable HMI displays, and industrial data loggers requiring extended runtime and secure firmware updates.

For engineers reviewing the STM32L4Q5VGY6PTR datasheet, STM32L4Q5VGY6PTR pinout, STM32L4Q5VGY6PTR application, or STM32L4Q5VGY6PTR equivalent, key selection criteria include verified 22 nA Shutdown mode current, dual-bank read-while-write Flash architecture, 190 nA Standby-with-RTC power profile, and UFBGA100 (7 × 7 mm) package compatibility with high-density PCB layouts.

Technical Context

This MCU implements FlexPowerControl with five distinct low-power modes (Shutdown, Standby, Stop 2, Low-power Run, Run), each validated for specific wake-up latency and current draw - e.g., 5 µs wakeup from Stop mode and 2.95 µA Stop 2 with RTC enabled. The ART Accelerator enables zero-wait-state execution from Flash at 120 MHz, while the interconnect matrix routes 23 communication peripherals across dual AHB buses.

Cryptographic capability includes hardware-accelerated AES-128/256, SHA-256 via HASH unit, and Public Key Accelerator (PKA) supporting RSA/ECC operations - all operating independently of CPU cycles. Analog subsystem integrates two 12-bit ADCs (5 Msps, hardware oversampling to 16-bit), two DACs, two op-amps with PGA, and two ultra-low-power comparators, each with independent supply domains.

Key Specifications

Pinout & Package

STM32L4Q5VGY6PTR uses a 100-ball UFBGA package (7 × 7 mm, 0.5 mm pitch) optimized for compact, high-I/O-density designs. Pin functions are defined per STM32L4Q5xx datasheet Section 4 (Pinouts and pin description) and Table 15 (pin definitions), with full alternate function mapping across AF0–AF15.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L4R5VIT6, STM32L4Q5VGY6PTR adds PKA for efficient ECC/RSA operations but trades 1-MB Flash for enhanced security; versus STM32L552RET6, it offers higher Flash/SRAM and proven low-power metrics but lacks TrustZone isolation - making it optimal for cost-sensitive, crypto-intensive edge nodes without full TEE requirements.

Availability

STM32L4Q5VGY6PTR is available at Aetrix Electronics and suitable for wearable health monitors, smart industrial HMIs, and portable data loggers requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant UFBGA packaging.

Supply support for STM32L4Q5VGY6PTR 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 products for industrial, automotive, and consumer markets.

The STM32L4 series targets ultra-low-power embedded applications demanding extended battery life, rich peripheral integration, and hardware security - with the L4Q5 variant specifically extending capabilities with PKA and LCD-TFT support for intelligent edge devices.

FAQ

What is the maximum operating frequency and associated performance metric?

The STM32L4Q5VGY6PTR operates at up to 120 MHz using its Arm Cortex-M4 core with FPU. It delivers 150 DMIPS (Dhrystone 2.1) at this frequency, equivalent to 1.25 DMIPS/MHz. This performance is sustained with zero-wait-state execution from Flash memory thanks to the ART Accelerator, enabling deterministic real-time response in motor control and audio processing applications.

Does this MCU support external SMPS regulation, and how does it affect power consumption?

Yes, STM32L4Q5VGY6PTR explicitly supports external SMPS (switched-mode power supply) via dedicated VDDSMPS and VBUS pins. When powered by an external SMPS instead of the internal LDO, active-mode current drops from 110 µA/MHz to 41 µA/MHz at 3.3 V - a 63% reduction that directly extends battery life in portable equipment without compromising processing throughput.

How many I/O pins are 5 V-tolerant, and what is the significance of independent VDDIO2 supply?

Up to 136 GPIOs on STM32L4Q5VGY6PTR are 5 V-tolerant, allowing direct interfacing with legacy 5 V peripherals without level shifters. Additionally, up to 14 I/Os support independent VDDIO2 supply down to 1.08 V - enabling mixed-voltage system design where sub-circuits (e.g., low-voltage sensors or displays) operate at reduced voltage while maintaining full 5 V tolerance on other pins.

What cryptographic accelerators are integrated, and which standards do they support?

Integrated accelerators include AES-128/256 for symmetric encryption/decryption, Public Key Accelerator (PKA) supporting RSA, ECC (NIST P-256/P-384), and Diffie-Hellman key exchange, HASH unit for SHA-256, and a True Random Number Generator (TRNG). These meet NIST SP 800-90A/B/C requirements and enable secure boot, firmware signing, and TLS 1.2/1.3 handshake acceleration without software overhead.