STMicroelectronics STM32G474RET6U

Overview

STM32G474RET6U from STMicroelectronics is an Arm® Cortex®-M4 32-bit microcontroller with FPU, operating 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 rail-to-rail op-amps, and a high-resolution timer (HRTIM) with 184 ps resolution - deployed in motor control, digital power conversion, and industrial sensing systems.

For engineers reviewing the STM32G474RET6U datasheet, STM32G474RET6U pinout, STM32G474RET6U application, or STM32G474RET6U equivalent, key selection criteria include HRTIM timing precision for PWM generation, dual-bank Flash with read-while-write for firmware updates, CORDIC/FMAC hardware accelerators for real-time math, and FDCAN support for automotive-grade communication.

Technical Context

The STM32G474RET6U implements an Adaptive Real-Time (ART) Accelerator enabling zero-wait-state execution from Flash memory, paired with a Memory Protection Unit (MPU) for secure task isolation. Its interconnect matrix routes 16 DMA channels across multiple AHB/APB buses to sustain concurrent analog acquisition, high-speed PWM modulation, and USB 2.0 full-speed data transfer without bus contention.

It integrates three FDCAN controllers supporting flexible data-rate (CAN FD) up to 5 Mbit/s, alongside a dedicated UCPD (USB Type-C™/Power Delivery) controller with hardware PD protocol handling. The HRTIM subsystem provides six 16-bit counters with independent dead-time insertion, emergency stop, and synchronized PWM outputs - essential for multi-phase motor drives and resonant LLC converters.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) package with 52 general-purpose I/Os - all mappable to external interrupt vectors, up to 42 pins 5 V tolerant. Includes dedicated HRTIM output pins (CHxA/CHxB), UCPD CC1/CC2 lines, FDCAN RX/TX, and analog-dedicated VREF+/VREF–, VDDA/VSSA rails.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G473RET6, the STM32G474RET6U adds FDCAN and UCPD for next-gen automotive and USB-C interfaces; versus STM32H743VIT6, it trades raw CPU performance for deterministic sub-nanosecond timing control - making it optimal for digital power and motor drive applications requiring both analog fidelity and PWM precision.

Availability

STM32G474RET6U is available at Aetrix Electronics and suitable for motor control systems, digital power supplies, industrial sensor hubs, and automotive body electronics requiring stable component supply across extended product lifecycles.

Supply support for STM32G474RET6U 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 digital power conversion and real-time motor control, integrating specialized peripherals like HRTIM, CORDIC, and FDCAN to replace discrete analog timing and communication components.

FAQ

What is the maximum operating frequency and associated performance metric of the STM32G474RET6U?

The STM32G474RET6U operates at up to 170 MHz with an integer performance rating of 213 DMIPS (Dhrystone MIPS), achieved via the Arm Cortex-M4 core with FPU and Adaptive Real-Time Accelerator enabling zero-wait-state execution from Flash memory - verified under standard test conditions per ARM CMSIS-DSP benchmarks.

Does the STM32G474RET6U support true hardware-based USB Type-C™ Power Delivery?

Yes - it integrates a dedicated UCPD (USB Type-C™/Power Delivery) controller with hardware PD protocol engine, CC line monitoring, VCONN switching, and fault protection. It handles USB PD negotiation up to 100 W without external PD controllers or firmware-level protocol stacks.

How many analog-to-digital converters does the STM32G474RET6U include, and what are their key timing specifications?

The device includes five independent 12-bit ADCs supporting up to 42 channels total, with a minimum conversion time of 0.25 µs (4 MSPS). Each ADC supports hardware oversampling to achieve up to 16-bit effective resolution, and they can operate concurrently with synchronized sampling triggered by HRTIM or timers.

What packaging option corresponds to the STM32G474RET6U part number suffix 'T6'?

The 'T6' suffix denotes the LQFP64 (10 × 10 mm, 0.5 mm pitch) package, confirmed in ST's official ordering information (DS12288 Rev 6, Table 1). This variant provides 52 user-accessible GPIOs, full peripheral pinout coverage, and compatibility with standard PCB assembly processes.