STMicroelectronics STM32L4A6AGI6P

Overview

STM32L4A6AGI6P from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 80 MHz (100 DMIPS), featuring 1 MB flash, 320 KB SRAM, USB OTG FS, AES+HASH crypto acceleration, and integrated SMPS support. It targets battery-powered industrial sensors, portable medical devices, and smart metering systems requiring long runtime and secure firmware execution.

For engineers reviewing the STM32L4A6AGI6P datasheet, STM32L4A6AGI6P pinout, STM32L4A6AGI6P application, or STM32L4A6AGI6P equivalent, key selection criteria include its 25 nA shutdown current, dual-bank read-while-write flash, hardware parity-checked SRAM, and dual CAN 2.0B interfaces for robust fieldbus connectivity in constrained environments.

Technical Context

The device integrates an Adaptive Real-time Accelerator (ART™) enabling zero-wait-state execution from flash at 80 MHz, alongside a multi-layer AHB bus matrix for concurrent peripheral access. Its FlexPowerControl architecture supports dynamic voltage scaling and multiple low-power modes-including Stop 2 (2.57 µA) and Standby with RTC (426 nA)-with precise wake-up timing (5 µs).

It features three independent 12-bit ADCs (5 Msps, hardware oversampling up to 16-bit), two 12-bit DACs, two operational amplifiers with programmable gain, and two ultra-low-power comparators-all with dedicated analog supplies. The cryptographic subsystem includes AES-128/256 and SHA-256 hardware accelerators, plus a true random number generator (TRNG) compliant with NIST SP800-90B.

Key Specifications

Pinout & Package

STM32L4A6AGI6P is housed in a 169-ball Ultra-Fine-Pitch Ball Grid Array (UFBGA169) package with 0.4 mm pitch, optimized for compact industrial and portable designs. Thermal resistance θ_JA is 25.5 °C/W (JEDEC 2-layer board).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power Arm Cortex-M4 MCU applications.

Compared with STM32L4A6AGI6P, the STM32L4R9AII6 trades ultra-low-power efficiency for display capability and memory headroom, while the STM32L562CEU6 replaces SMPS-centric power optimization with TrustZone-based security primitives-making each suitable for distinct design priorities: longevity vs. UI richness vs. certification-grade trust.

Availability

STM32L4A6AGI6P is available at Aetrix Electronics and suitable for smart utility metering, portable medical monitoring, industrial edge sensor nodes, and secure IoT gateway controllers requiring stable component supply across multi-year production cycles.

Supply support for STM32L4A6AGI6P 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 extended battery life, robust security, and rich peripheral integration-specifically engineered for intelligent sensing, wearable health, and energy infrastructure control.

FAQ

What is the maximum operating frequency and corresponding performance metric of the STM32L4A6AGI6P?

The STM32L4A6AGI6P operates at up to 80 MHz with an Arm Cortex-M4 core featuring FPU and ART Accelerator™, achieving 100 DMIPS (Dhrystone 2.1) and 273.55 CoreMark® (3.42 CoreMark/MHz). This performance is sustained with zero wait states from flash memory due to the ART cache, enabling deterministic real-time execution in resource-constrained applications.

Does the STM32L4A6AGI6P support external memory expansion, and if so, what types?

Yes, it supports external memory via two interfaces: the Flexible Static Memory Controller (FSMC) for NOR, PSRAM, SRAM, and NAND memories, and the Dual-flash Quad SPI interface for high-speed serial flash. The FSMC provides parallel bus access with configurable timing, while Quad SPI enables up to 133 MHz data rates using single/dual/quad I/O modes-ideal for XIP code execution or large data logging buffers.

How does the power management architecture enable ultra-low-power operation in battery-powered designs?

The FlexPowerControl architecture delivers industry-leading low-power states: 25 nA in Shutdown (5 wakeup pins), 426 nA in Standby with RTC, and 2.57 µA in Stop 2 mode. Integrated SMPS support reduces run-mode current to 37 µA/MHz at 3.3 V, while Batch Acquisition Mode (BAM) allows peripherals like ADCs to operate autonomously during CPU sleep-enabling sub-µA average system current in duty-cycled sensor applications.

What hardware security features are integrated, and how are they applied in practice?

Integrated security includes AES-128/256 and SHA-256 hardware accelerators, a True Random Number Generator (TRNG), 96-bit unique ID, and proprietary code readout protection (RDP). In practice, these enable fast TLS handshake offload, secure firmware signing/verification, entropy seeding for cryptographic keys, and immutable device identity binding-essential for meeting PSA Certified Level 2 and IEC 62443 requirements in industrial and medical deployments.