STMicroelectronics STM32G474QET6

Overview

STM32G474QET6 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, 128 KB SRAM (96 KB + 32 KB CCM), and integrated analog peripherals including 5×12-bit ADCs (0.25 µs), 7×12-bit DACs, 6 operational amplifiers, and HRTIM with 184 ps resolution. It targets high-precision motor control, digital power conversion, and industrial sensing systems.

For engineers reviewing the STM32G474QET6 datasheet, STM32G474QET6 pinout, STM32G474QET6 application, or STM32G474QET6 equivalent, key selection criteria include HRTIM timing precision, dual-bank Flash read-while-write capability, CORDIC/FMAC hardware acceleration, and FDCAN FD support for deterministic real-time communication.

Technical Context

The device implements an Adaptive Real-Time Accelerator (ART) enabling zero-wait-state execution from Flash memory, paired with a Memory Protection Unit (MPU) and securable memory regions including PCROP and 1 KB OTP. Its interconnect matrix supports concurrent access to Flash, SRAM, and peripherals without bus contention.

Core analog subsystem integration includes rail-to-rail comparators with programmable hysteresis, VREFBUF with selectable 2.048 V/2.5 V/2.9 V outputs, and op-amps configurable in PGA mode with external gain-setting resistors - all directly accessible via dedicated pins and independent of GPIO remapping.

Key Specifications

Pinout & Package

STM32G474QET6 uses the UFQFPN48 (7 × 7 mm) package with 48-pin layout optimized for compact industrial and power electronics designs. Pin functions support full peripheral remapping via alternate function registers and include dedicated analog inputs, high-drive GPIOs, and hardware-accelerated timer channels.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G474QET6, the G473QET6 trades math acceleration for lower cost while retaining identical analog and timing capabilities; the H743VIT6 offers higher throughput and memory but sacrifices the unique 184 ps HRTIM resolution critical for GaN/SiC gate drive synchronization.

Availability

STM32G474QET6 is available at Aetrix Electronics and suitable for industrial motor control, digital power conversion, and programmable logic controller (PLC) modules requiring stable component supply and long-term production continuity.

Supply support for STM32G474QET6 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, specializing in microcontrollers, power management, analog, and MEMS technologies for industrial, automotive, and consumer markets.

The STM32G4 series is designed specifically for high-precision analog-intensive applications such as digital power supplies, motor control, and metering - combining real-time performance, hardware math acceleration, and robust industrial-grade peripherals.

FAQ

What is the maximum operating temperature range for STM32G474QET6?

The STM32G474QET6 is qualified for industrial operation from –40 °C to +105 °C ambient temperature. This rating is validated per JEDEC JESD47 and applies to all package variants including UFQFPN48. Thermal derating begins above 105 °C, and junction temperature must remain below 125 °C under continuous operation.

Does STM32G474QET6 support hardware encryption or secure boot?

Yes - it includes securable memory areas with proprietary code readout protection (PCROP), a 96-bit unique ID, and optional AES-128 hardware acceleration via the cryptographic processor (CRYP). Secure boot is implemented through boot ROM verification of signed firmware images stored in Flash, with public key validation using ECDSA.

Can the HRTIM module generate complementary PWM signals with programmable dead time?

Yes - the HRTIM includes dedicated dead-time insertion units per channel pair, supporting both fixed and variable dead-time generation. It also features emergency stop inputs that force all outputs to safe states within one clock cycle, meeting IEC 61800-5-2 functional safety requirements for drive systems.

Is there a development board officially supported for STM32G474QET6?

The NUCLEO-G474RE board uses the STM32G474RET6 (LQFP64), not the QET6 variant. However, the STM32G474E-EVAL evaluation board fully supports the QET6 in UFQFPN48 and provides access to all peripherals including HRTIM, FDCAN FD, and analog subsystems - with schematics and layout files publicly available from ST's website.