STMicroelectronics STM32L4Q5AGI6P

Overview

STM32L4Q5AGI6P 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. It targets battery-powered industrial HMI, portable medical devices, and smart metering systems requiring secure, high-resolution display and long runtime.

For engineers reviewing the STM32L4Q5AGI6P datasheet, STM32L4Q5AGI6P pinout, STM32L4Q5AGI6P application, or STM32L4Q5AGI6P equivalent, key selection criteria include its 190 nA Standby-with-RTC current, dual-bank read-while-write Flash, 2×12-bit ADCs (5 Msps), Chrom-ART Accelerator (DMA2D), and UFBGA169 package compatibility with high-density PCB layouts.

Technical Context

The device integrates an adaptive real-time accelerator (ART) enabling zero-wait-state execution from Flash at 120 MHz, and a multi-layer AHB bus matrix supporting concurrent access by CPU, DMA, and peripherals. Its power architecture includes three voltage scaling ranges (VOS0–VOS2), configurable SMPS/LDO operation, and five low-power modes with sub-μA quiescent currents.

Clock management features four PLLs (system, USB, audio, ADC), internal multispeed oscillator auto-trimmed by LSE (±0.25%), and clock recovery for USB. Peripheral interconnect supports up to 23 communication interfaces-including USB OTG FS, 6×USART, 4×I²C, CAN 2.0B, dual Octo-SPI-and 11 analog blocks with independent supply domains.

Key Specifications

Pinout & Package

UFBGA169 package with 0.4 mm ball pitch, 7 × 7 mm body size, and 132 user I/Os (100 5 V-tolerant). Thermal pad on underside for enhanced heat dissipation in compact industrial designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L4R5ZIT6, the STM32L4Q5AGI6P offers PKA-based RSA/ECC acceleration critical for lightweight TLS 1.3 handshakes in constrained nodes, while the STM32U575ZIT6 delivers deeper security and lower power but demands full firmware re-architecture-making the L4Q5 optimal for cost-sensitive, crypto-aware legacy-compatible designs.

Availability

STM32L4Q5AGI6P is available at Aetrix Electronics and suitable for industrial HMI panels, portable medical monitors, and smart utility meters requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant UFBGA packaging.

Supply support for STM32L4Q5AGI6P 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 automotive chips since 1987.

The STM32L4 series targets ultra-low-power embedded applications demanding rich peripherals, robust security, and extended battery life-optimized for IoT edge nodes, wearables, and industrial automation where energy efficiency and feature integration are critical.

FAQ

What is the maximum operating temperature range for STM32L4Q5AGI6P?

The STM32L4Q5AGI6P is qualified for industrial operation from –40 °C to +85 °C ambient temperature. Its extended temperature grade (–40 °C to +125 °C) is available under part number STM32L4Q5AGI6Q, which uses the same UFBGA169 package but undergoes additional screening for automotive and harsh-environment applications.

Does STM32L4Q5AGI6P support external SDRAM via FSMC?

No. The Flexible Static Memory Controller (FSMC) in STM32L4Q5AGI6P supports only NOR, PSRAM, NAND, and FRAM memories-not SDRAM. For SDRAM interfacing, designers must use the Octo-SPI interface with compatible HyperRAM or rely on external memory controllers; ST does not provide native SDRAM timing support in this device family.

How many pins support independent VDDIO2 supply, and what is their purpose?

Fourteen GPIO pins (PA0–PA7, PB0–PB1, PC0–PC5) support independent VDDIO2 supply down to 1.08 V. This allows direct interfacing with ultra-low-voltage sensors, logic, or displays without level shifters-critical for preserving signal integrity and minimizing BOM cost in mixed-voltage systems.

Can the Chrom-ART Accelerator (DMA2D) perform alpha blending between two frame buffers simultaneously?

Yes. The DMA2D engine supports dual-source alpha blending: it can read foreground and background ARGB8888 frame buffers from SRAM, apply per-pixel alpha values, and write the blended result to a third destination buffer-all in hardware without CPU intervention. This enables smooth UI transitions and layered graphics at full 60 Hz refresh on 800×480 displays.