STMicroelectronics STM32G473QET6

Overview

STM32G473QET6 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 industrial motor control, digital power supplies, and precision sensor signal conditioning systems.

For engineers reviewing the STM32G473QET6 datasheet, STM32G473QET6 pinout, STM32G473QET6 application, or STM32G473QET6 equivalent, key selection considerations include its CORDIC/FMAC hardware accelerators for real-time trigonometric and filtering math, dual-bank Flash with read-while-write capability, 5 V-tolerant GPIOs, UCPD interface for USB Type-C™ power delivery, and support for ultra-low-power stop/standby modes with RTC wakeup.

Technical Context

The STM32G473QET6 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 interconnect matrix supports concurrent access to Flash, SRAM, and peripherals via multiple AHB/APB buses.

It integrates dedicated mathematical hardware: CORDIC for sine/cosine/tangent/log/exp acceleration and FMAC for FIR/IIR filter coefficient computation - both accessible via DMA and tightly coupled to the CPU pipeline. Analog subsystem includes rail-to-rail comparators, programmable-gain op-amps, and VREFBUF with selectable 2.048 V / 2.5 V / 2.9 V outputs.

Key Specifications

Pinout & Package

LQFP128 (14 × 14 mm, 0.4 mm pitch) package with 107 fast I/Os - all mappable to external interrupt vectors, up to 70 pins 5 V tolerant. Power supply pins include VDD/VSS (core), VDDA/VSSA (analog), VBAT (RTC backup), and VREF+ (ADC reference).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-performance mixed-signal microcontroller applications.

Compared with STM32G473QET6, STM32G474RET6 trades UCPD for cryptographic acceleration - ideal for secure boot and OTA updates - while STM32H743VIT6 delivers raw performance at the expense of power efficiency, BOM cost, and analog integration density.

Availability

STM32G473QET6 is available at Aetrix Electronics and suitable for industrial motor control, digital power supplies, precision sensor signal conditioning, and USB-C enabled portable instrumentation requiring stable component supply across long production lifecycles.

Supply support for STM32G473QET6 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-grade components.

The STM32G4 series targets high-efficiency, analog-rich embedded applications - combining real-time performance, mathematical acceleration, and USB-C readiness for next-generation industrial and consumer devices.

FAQ

What is the maximum operating frequency and associated DMIPS rating of the STM32G473QET6?

The STM32G473QET6 operates at up to 170 MHz with an integer performance rating of 213 DMIPS (Dhrystone 2.1). This is achieved using the ART Accelerator, which enables zero-wait-state execution from Flash memory. The FPU supports single-precision floating-point operations, and the MPU enforces memory protection in multitasking environments.

Does the STM32G473QET6 support USB Type-C™ Power Delivery natively?

Yes - the STM32G473QET6 integrates a full USB Type-C™ and Power Delivery (UCPD) controller compliant with USB PD 3.0 specification. It handles physical layer signaling, BMC encoding/decoding, policy engine, and PD message parsing without external transceivers, reducing BOM count and PCB area in compact USB-C designs.

How many analog-to-digital converters does the STM32G473QET6 include, and what are their key capabilities?

The device integrates five independent 12-bit ADCs with up to 42 total channels, 0.25 µs conversion time, and hardware oversampling support up to 16-bit effective resolution. Each ADC supports injected/conversion sequences, analog watchdogs, and synchronous sampling - critical for multi-sensor systems like motor phase current and temperature monitoring.

What packaging and pin count does the STM32G473QET6 use, and how many I/Os are available?

The STM32G473QET6 uses an LQFP128 package (14 × 14 mm, 0.4 mm pitch) with 107 fast general-purpose I/Os. Of these, up to 70 pins are 5 V tolerant, all support external interrupt mapping, and most offer multiple alternate functions including FDCAN, SPI, I²C, and timer channels - enabling flexible peripheral routing in dense PCB layouts.