STMicroelectronics STM32G474RET3TR

Overview

STM32G474RET3TR from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, operating up to 170 MHz (213 DMIPS), featuring 512 KB Flash with ECC, 96 KB SRAM (including 32 KB CCM with parity), and integrated high-resolution timer (HRTIM) with 184 ps resolution. It integrates dual 12-bit DACs (3 buffered external @ 1 MSPS), five 12-bit ADCs (up to 42 channels, 0.25 µs conversion), and three FDCAN controllers for automotive-grade communication - deployed in motor control inverters and digital power supplies.

For engineers reviewing the STM32G474RET3TR datasheet, STM32G474RET3TR pinout, STM32G474RET3TR application, or STM32G474RET3TR equivalent, key selection criteria include HRTIM timing precision for PWM dead-time control, dual-bank Flash read-while-write capability for firmware updates, analog subsystem integration (CORDIC/FMAC), and FDCAN FD support in compact LQFP64 packaging.

Technical Context

The STM32G474RET3TR implements an adaptive real-time accelerator (ART) enabling zero-wait-state execution from Flash memory, paired with a memory protection unit (MPU) and securable PCROP for firmware integrity. Its interconnect matrix supports concurrent access to peripherals including HRTIM, advanced motor control timers (TIM1/TIM8/TIM20), and dual-bank Flash with ECC.

It integrates dedicated hardware accelerators: CORDIC for trigonometric computation and FMAC for digital filter operations - both accessible via DMA and tightly coupled to the Cortex-M4 core. The analog subsystem includes seven rail-to-rail comparators, six operational amplifiers (configurable as PGAs), and VREFBUF with selectable 2.048 V / 2.5 V / 2.9 V outputs for precision sensor signal conditioning.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G473RET6, the G474RET3TR adds FDCAN FD and 128 KB more Flash for OTA firmware resilience; versus STM32H743VIT6, it trades raw performance for deterministic 184 ps timing and lower system power - critical in space-constrained digital power and motor drives.

Availability

STM32G474RET3TR is available at Aetrix Electronics and suitable for motor control inverters, digital power supplies, automotive body electronics, and industrial PLC I/O modules requiring stable component supply across multi-year production cycles.

Supply support for STM32G474RET3TR 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 precision motor control, combining real-time analog integration (HRTIM, CORDIC, FMAC) with Arm Cortex-M4 performance in cost-optimized packages.

FAQ

What is the maximum operating frequency and associated DMIPS rating?

The STM32G474RET3TR operates at up to 170 MHz with an integer performance rating of 213 DMIPS, measured using the Dhrystone 2.1 benchmark under conditions of zero-wait-state Flash execution enabled by the ART Accelerator. This frequency is sustained across the full industrial temperature range (–40°C to +85°C) with VDD ≥ 2.7 V.

Does this MCU support true hardware-based firmware encryption or secure boot?

Yes - the STM32G474RET3TR includes proprietary code readout protection (PCROP) for Flash memory, securable memory areas, and a 96-bit unique device ID. While it does not integrate a dedicated cryptographic accelerator (like AES or SHA engines found in G0/G5 lines), PCROP enables secure firmware partitioning and prevents unauthorized readout of protected code sections.

How many independent PWM channels can be generated simultaneously with guaranteed timing correlation?

The HRTIM peripheral provides 12 fully synchronized PWM outputs across six 16-bit timers, with 184 ps resolution and hardware-managed dead-time insertion. All 12 channels share a common timebase and can be phase-shifted or complementary-paired without CPU intervention - essential for interleaved multi-phase power converters and 3-phase motor drives.

Is the LQFP64 package of STM32G474RET3TR pin-compatible with other members of the G474 family?

Yes - the STM32G474RET3TR in LQFP64 shares identical pinout and electrical characteristics with other G474x RET variants (e.g., STM32G474RETx), differing only in Flash size and ordering suffix. Pin compatibility extends across the entire G474xB/C/E series in the same package option, enabling drop-in replacement during design iteration or qualification.