STMicroelectronics STM32L4A6QGI6P

Overview

STM32L4A6QGI6P from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 80 MHz, featuring 1 MB flash, 320 KB SRAM, USB OTG FS, AES+HASH crypto acceleration, and integrated SMPS support. It delivers 100 DMIPS and targets battery-powered industrial sensors, portable medical devices, and smart metering systems requiring extended runtime and secure firmware updates.

For engineers reviewing the STM32L4A6QGI6P datasheet, STM32L4A6QGI6P pinout, STM32L4A6QGI6P application, or STM32L4A6QGI6P equivalent, key selection criteria include its 25 nA shutdown current, dual-bank read-while-write flash, Chrom-ART Accelerator for GUI rendering, 3× 12-bit ADCs (5 Msps), and hardware-based AES-256/SHA-256 encryption for edge-node security compliance.

Technical Context

The device integrates an Adaptive Real-time Accelerator (ART Accelerator™) enabling zero-wait-state execution from flash at 80 MHz, and a multi-AHB interconnect matrix supporting concurrent access to flash, SRAM, and peripherals. Its power architecture includes three voltage scaling modes (VOS0–VOS2), external SMPS interface (VDD12), and FlexPowerControl logic managing 7 low-power states - including Stop 2 (2.57 µA) and Standby with RTC (426 nA).

Peripherals are partitioned across independent power domains: analog blocks (ADCs, DACs, OPAMPs, COMP) support 1.08 V–3.6 V operation; I/Os are 5 V-tolerant; and communication interfaces include dual CAN 2.0B, 2× SAI for audio streaming, and Quad SPI for external memory expansion - all accessible in low-power modes via dedicated wakeup paths.

Key Specifications

Pinout & Package

STM32L4A6QGI6P uses a 132-ball UFBGA package (7 × 7 mm, 0.4 mm pitch) optimized for compact, high-density PCB layouts in space-constrained applications. The package supports 112 general-purpose I/Os, most 5 V-tolerant, with up to 14 I/Os configurable for independent supply down to 1.08 V.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L476RG, the STM32L4A6QGI6P provides superior analog integration and graphics capability; compared with STM32L552ZE, it offers higher flash density and lower power in non-secure contexts, making it optimal for cost-sensitive, feature-rich edge devices without formal security certification requirements.

Availability

STM32L4A6QGI6P is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, smart electricity meters, and asset tracking beacons requiring stable component supply across multi-year production cycles.

Supply support for STM32L4A6QGI6P 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 management ICs, sensors, and automotive semiconductors since 1987.

The STM32L4 series targets ultra-low-power embedded applications demanding high performance-per-milliwatt, with the L4A6 variant specifically engineered for secure, graphics-capable, battery-operated edge devices in industrial and healthcare markets.

FAQ

What is the maximum operating frequency and core type of STM32L4A6QGI6P?

The STM32L4A6QGI6P features an Arm Cortex-M4 core with FPU, rated for up to 80 MHz operation. It achieves 100 DMIPS and 3.42 CoreMark/MHz, validated under full-speed conditions with ART Accelerator enabled and flash execution. This frequency is sustained across the full industrial temperature range (-40 °C to +85 °C) with appropriate voltage scaling.

Does STM32L4A6QGI6P support external memory interfaces?

Yes - it integrates a Flexible Static Memory Controller (FSMC) supporting SRAM, PSRAM, NOR, and NAND memories, plus a Dual-flash Quad SPI interface for high-speed serial flash expansion. Both interfaces operate independently and remain accessible in low-power modes when configured with proper clock gating and power domain settings.

How many ADC channels and what resolution does STM32L4A6QGI6P provide?

The device integrates three independent 12-bit ADCs, each capable of 5 Msps sampling rate. With hardware oversampling, effective resolution extends to 16 bits. Each ADC supports up to 16 external channels and includes built-in offset calibration, discontinuous mode, and analog watchdog functionality - all usable in Stop mode with LPTIM-triggered conversions.

What packaging and thermal specifications apply to STM32L4A6QGI6P?

STM32L4A6QGI6P is supplied in a 132-ball UFBGA package (7 × 7 mm, 0.4 mm pitch) with JEDEC-standard thermal characteristics: θ_JA = 30.5 °C/W (on 4-layer board), T_j max = 125 °C. The package supports reflow soldering per J-STD-020 and is qualified for industrial temperature operation (-40 °C to +85 °C).