STMicroelectronics STM32G473MET3

Overview

STM32G473MET3 from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, operating at up to 170 MHz (213 DMIPS), featuring 512 KB Flash with ECC, 128 KB SRAM (96 KB + 32 KB CCM), and integrated analog peripherals including five 12-bit ADCs (0.25 µs conversion), seven 12-bit DACs, six operational amplifiers, and three FDCAN controllers - deployed in motor control, digital power conversion, and industrial sensing systems.

For engineers reviewing the STM32G473MET3 datasheet, STM32G473MET3 pinout, STM32G473MET3 application, or STM32G473MET3 equivalent, key selection considerations include its dual-bank Flash with read-while-write capability, CORDIC/FMAC hardware accelerators for real-time math, 5 V-tolerant I/Os, UCPD interface for USB Type-C™ power delivery, and support for LQFP80 (12 × 12 mm) packaging with 80 pins.

Technical Context

The STM32G473MET3 implements an Arm Cortex-M4 core with FPU and Adaptive Real-Time (ART) Accelerator enabling zero-wait-state execution from Flash at 170 MHz. Its memory subsystem includes 512 KB dual-bank Flash (with PCROP and ECC), 96 KB SRAM with parity on first 32 KB, and 32 KB CCM SRAM with parity - all accessible via multi-AHB bus matrix for concurrent peripheral access.

Analog integration centers on five independent 12-bit ADCs (up to 42 channels, 0–3.6 V range), seven 12-bit DACs (3 buffered external @ 1 MSPS, 4 unbuffered internal @ 15 MSPS), six rail-to-rail op-amps (all terminals accessible, PGA mode supported), and dedicated hardware accelerators: CORDIC for trigonometric functions and FMAC for filter computation - optimized for closed-loop control in real-time embedded systems.

Key Specifications

Pinout & Package

LQFP80 (12 × 12 mm, 0.5 mm pitch) package with exposed thermal pad; 80-pin configuration supporting full peripheral mapping, multiple power/ground pins for noise resilience, and dedicated VDDA/VSSA rails for analog stability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with STM32G474RET6, the STM32G473MET3 adds UCPD and two extra GPIOs in LQFP80; versus STM32H743VIT6, it trades peak CPU speed for superior analog density, hardware math acceleration, and lower power consumption in real-time control loops.

Availability

STM32G473MET3 is available at Aetrix Electronics and suitable for industrial motor control, digital power conversion, and USB-C PD system design requiring stable component supply across multi-year production cycles.

Supply support for STM32G473MET3 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 devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STM32G4 series targets high-efficiency real-time control applications - combining rich analog integration, hardware math acceleration, and robust communication interfaces for digital power, motor control, and smart sensing.

FAQ

What is the maximum operating frequency and associated performance metric of the STM32G473MET3?

The STM32G473MET3 operates at up to 170 MHz with an integer performance rating of 213 DMIPS (Dhrystone MIPS). This is achieved using the Arm Cortex-M4 core with FPU and Adaptive Real-Time Accelerator (ART), which enables zero-wait-state execution from Flash memory. The ART accelerator significantly reduces instruction fetch latency, making it suitable for deterministic real-time applications such as motor control and digital power conversion.

Does the STM32G473MET3 support USB Type-C™ Power Delivery, and how is it implemented?

Yes, the STM32G473MET3 integrates a dedicated USB Type-C™ and Power Delivery (UCPD) controller compliant with USB PD 3.0. It includes hardware support for PD messaging (SOP'/SOP''), VBUS sensing and control, fault protection, and cryptographic operations via the built-in HASH processor. The UCPD peripheral operates independently of the main CPU, allowing concurrent PD negotiation and application execution without performance impact.

How does the dual-bank Flash architecture benefit firmware updates in the STM32G473MET3?

The 512 KB Flash is organized into two independent banks, enabling true Read-While-Write (RWW) operation. During a firmware update, one bank executes the active application while the other receives new code - eliminating runtime interruption. Combined with Proprietary Code Readout Protection (PCROP), this architecture supports secure, seamless over-the-air (OTA) updates in safety-critical industrial and power systems without compromising functional safety or real-time behavior.

What analog features distinguish the STM32G473MET3 from earlier STM32G0/G1 series MCUs?

The STM32G473MET3 adds hardware math accelerators (CORDIC and FMAC), six fully accessible op-amps with PGA mode, seven 12-bit DAC channels (three buffered external), and five independent 12-bit ADCs with up to 42 channels and 0.25 µs conversion time. Unlike G0/G1, it supports simultaneous sampling across multiple ADCs, internal voltage reference buffer (VREFBUF) with selectable outputs, and enhanced comparator hysteresis control - all optimized for high-precision closed-loop control in power and motor applications.