STMicroelectronics STM32L496ZGT3

Overview

STM32L496ZGT3 from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, 80 MHz max frequency, 1 MB flash, 320 KB SRAM, and integrated USB OTG FS, audio interfaces (SAI), HASH (SHA-256), and external SMPS support. It operates from 1.71–3.6 V across –40 °C to 125 °C and delivers 100 DMIPS for battery-powered industrial sensors and portable medical devices requiring real-time signal processing and secure firmware updates.

For engineers reviewing the STM32L496ZGT3 datasheet, STM32L496ZGT3 pinout, STM32L496ZGT3 application, or STM32L496ZGT3 equivalent, key selection criteria include its dual-bank flash with read-while-write capability, 320 nA VBAT mode for RTC + backup registers, 37 µA/MHz SMPS-powered run mode, and hardware-accelerated cryptographic functions for edge-node security compliance.

Technical Context

The device implements an Adaptive Real-Time (ART) Accelerator enabling zero-wait-state execution from flash at 80 MHz, paired with a Memory Protection Unit (MPU) for secure task isolation in RTOS environments. Its interconnect matrix supports concurrent peripheral access without bus contention, critical for simultaneous ADC sampling, DMA transfers, and SAI audio streaming.

Power architecture integrates three independent voltage regulators (LDO/SMPS/bypass), allowing dynamic switching between 91 µA/MHz (LDO) and 37 µA/MHz (SMPS) operation. Low-power modes are managed via FlexPowerControl, with 5 wakeup pins active in 25 nA Shutdown and 426 nA Standby-with-RTC states-enabling multi-year battery life in metering applications.

Key Specifications

Pinout & Package

LQFP144 package with exposed thermal pad; 144-pin square-outline leaded plastic package, 20 × 20 mm body, 0.5 mm pitch, compliant with JEDEC MO-207AB.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L476RG, the STM32L496ZGT3 adds QUADSPI, SAI, and extended temperature support for richer peripheral integration; versus STM32L562ZE, it trades TrustZone and PUF for lower static power and broader analog feature set-making it optimal for power-constrained industrial sensing over certified secure boot.

Availability

STM32L496ZGT3 is available at Aetrix Electronics and suitable for smart utility meters, portable medical monitors, industrial edge gateways, and secure asset trackers requiring stable component supply across automotive-grade temperature ranges and long product lifecycles.

Supply support for STM32L496ZGT3 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 analog components for industrial, automotive, and consumer markets.

The STM32L4 series targets ultra-low-power embedded applications demanding high performance-per-milliwatt, featuring advanced power gating, flexible voltage scaling, and hardware accelerators for cryptography and graphics-optimized for battery-operated and energy-harvesting systems.

FAQ

What is the maximum operating frequency and corresponding power consumption of STM32L496ZGT3?

The STM32L496ZGT3 achieves 80 MHz maximum CPU frequency using its ART Accelerator. At this speed, typical power consumption is 91 µA/MHz in LDO mode (3.3 V) and 37 µA/MHz in SMPS mode (VDD12 = 1.10 V), measured with code executing from flash and ART enabled. These values are confirmed in Table 26 and Table 27 of DS11585 Rev 20.

Does STM32L496ZGT3 support external memory interfaces, and which types are compatible?

Yes, it supports two external memory interfaces: the Flexible Static Memory Controller (FSMC) for SRAM, PSRAM, NOR, and NAND memories, and the Dual-flash QUADSPI interface for serial flash/XIP execution. Both are validated per Section 3.40 and 3.41 of the datasheet, with timing parameters specified in Tables 6.3.29 and 6.3.31.

How many independent analog domains does STM32L496ZGT3 provide, and what are their voltage ranges?

The device features three independent analog domains: VDDA (1.62–3.6 V), VREF+ (1.2–3.6 V), and VBAT (1.65–3.6 V). VDDA powers ADCs, DACs, op-amps, and comparators; VREF+ sets ADC/DAC reference; VBAT supplies RTC and backup registers. This separation is documented in Section 3.10.1 and Table 6.19.

What debug interfaces are supported, and are they accessible in all low-power modes?

It supports Serial Wire Debug (SWD) and JTAG via the SWJ-DP interface, with Embedded Trace Macrocell™ for instruction tracing. Debug remains accessible in Run, Sleep, and Stop modes but is disabled in Standby and Shutdown modes per Section 3.42.1. SWD pins (PA13/PA14) retain functionality unless remapped.