STMicroelectronics STM32L496QGI6P

Overview

STM32L496QGI6P 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, hardware SHA-256 acceleration, and integrated SMPS support. It targets battery-powered industrial sensors, portable medical devices, and smart metering systems requiring sub-µA standby operation and real-time audio processing.

For engineers reviewing the STM32L496QGI6P datasheet, STM32L496QGI6P pinout, STM32L496QGI6P application, or STM32L496QGI6P equivalent, key selection criteria include verified 2.57 µA Stop 2 mode current, dual-bank read-while-write flash architecture, 2x 12-bit DACs with sample-and-hold, Chrom-ART Accelerator for GUI rendering, and 2x CAN 2.0B interfaces with hardware filtering.

Technical Context

The device integrates an Adaptive Real-Time (ART) Accelerator 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 five low-power modes-including 25 nA Shutdown and 426 nA Standby with RTC-managed via dedicated power control registers and hardware brownout reset in all active modes.

Core peripherals include two SAI interfaces for I²S/TDM audio streaming, a 8–14-bit DCMI camera interface (up to 32 MHz mono), and dual 12-bit ADCs delivering 5 Msps with 16-bit oversampling. The cryptographic subsystem comprises HASH (SHA-256) and a true random number generator (TRNG), while timing integrity is ensured by three independent PLLs (system, USB, audio) and a 32 kHz LSE-backed RTC with hardware calendar.

Key Specifications

Pinout & Package

STM32L496QGI6P uses a UFBGA132 (7 × 7 mm, 0.5 mm pitch) package with 115 I/O pins, of which up to 136 are fast general-purpose I/Os (most 5 V-tolerant) and up to 14 support independent supply down to 1.08 V for mixed-voltage interfacing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L476RG, the STM32L496QGI6P delivers superior power efficiency in SMPS mode and richer analog/audio peripherals; versus STM32U575ZIT6, it retains essential SAI/DCMI functionality at lower security certification overhead, making it optimal for cost-constrained, feature-rich ultra-low-power edge nodes.

Availability

STM32L496QGI6P is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, smart energy meters, and audio-enabled IoT gateways requiring stable component supply across extended product lifecycles.

Supply support for STM32L496QGI6P 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 analog components for industrial, automotive, and consumer markets.

The STM32L4 series targets ultra-low-power embedded applications demanding high performance-per-milliwatt, combining Cortex-M4 processing with advanced power gating, hardware accelerators, and robust peripheral integration for battery-operated edge intelligence.

FAQ

What is the maximum operating frequency and associated performance metric?

The STM32L496QGI6P operates at up to 80 MHz with an Adaptive Real-Time Accelerator enabling zero-wait-state flash execution. Its performance is quantified at 100 DMIPS (Dhrystone 2.1) and 273.55 CoreMark®, achieving 3.42 CoreMark/MHz. This allows deterministic real-time control and efficient floating-point math for sensor fusion algorithms without external memory latency penalties.

Does STM32L496QGI6P support external memory expansion, and if so, what types?

Yes, it supports external memory via two dedicated interfaces: the Flexible Static Memory Controller (FSMC) for parallel SRAM, PSRAM, NOR, and NAND memories; and the Dual-flash QUADSPI interface for serial NOR/NAND flash with execute-in-place (XIP) capability. Both interfaces are accessible in multiple low-power modes and support hardware ECC for NAND reliability, enabling scalable code/data storage beyond on-chip limits.

How does the power management architecture reduce energy consumption in battery-powered designs?

The FlexPowerControl architecture implements seven low-power modes with precise current targets: 25 nA Shutdown, 108 nA Standby, 426 nA Standby with RTC, and 2.57 µA Stop 2. It includes automatic voltage scaling, batch acquisition mode (BAM) for peripheral-triggered DMA transfers during CPU sleep, and an external SMPS interface that cuts run-mode current by >30% versus LDO operation-enabling multi-year operation on primary lithium cells.

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

Integrated security features include a true random number generator (TRNG), hardware SHA-256 accelerator, 96-bit unique ID, and readout protection (RDP) levels with debug lock. In practice, TRNG seeds cryptographic keys for TLS handshakes; SHA-256 verifies signed firmware images during OTA updates; RDP Level 2 prevents JTAG/SWD access post-deployment; and the unique ID enables device-specific key derivation for secure provisioning in cloud-connected deployments.