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STMicroelectronics STM32G474QCT6

Name: STM32G474QCT6
Brand: STMicroelectronics
SKU: STM32G474QCT6
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STM32G474QCT6

Manufacturer:: STMicroelectronics

Category:: Microcontrollers

Package:: 128-LQFP

Datasheet:: STM32G474QCT6.pdf

Description:: IC MCU 32BIT 256KB FLASH 128LQFP

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Product details

Overview

STM32G474QCT6 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 a high-resolution timer (HRTIM) with 184 ps resolution - deployed in industrial motor control, digital power supplies, and precision sensor signal conditioning.

For engineers reviewing the STM32G474QCT6 datasheet, STM32G474QCT6 pinout, STM32G474QCT6 application, or STM32G474QCT6 equivalent, key selection considerations include HRTIM timing precision for PWM generation, dual-bank Flash read-while-write capability for firmware updates, CORDIC/FMAC hardware accelerators for real-time math, and UCPD support for USB Type-C™ power delivery system integration.

Technical Context

The STM32G474QCT6 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 areas including PCROP and 1 KB OTP. Its interconnect matrix supports concurrent peripheral access without bus contention.

It integrates three FDCAN controllers compliant with ISO 11898-1:2015 (flexible data-rate), a USB 2.0 full-speed interface with LPM/BCD, and a dedicated USB Type-C™/Power Delivery controller (UCPD) with VBUS monitoring and role swap support - all synchronized via a multi-source clock system with 4–48 MHz crystal oscillator, 32 kHz RTC calibratable oscillator, and ±1% internal 16 MHz RC.

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	Arm Cortex-M4 with FPU, 170 MHz max, 213 DMIPS - enables deterministic real-time control with floating-point math for motor algorithms.
Memory	512 KB Flash (ECC, dual-bank RWW), 96 KB SRAM + 32 KB CCM SRAM (parity-checked) - supports safe over-the-air updates and low-latency ISR execution.
Analog Peripherals	5× 12-bit ADCs (42 ch, 0.25 µs), 7× 12-bit DACs (3 buffered ext./4 unbuffered int.), 6× OPAMPs (PGA mode), 7× comparators - enables closed-loop analog signal acquisition and actuation in single-chip power systems.
High-Resolution Timer	HRTIM: 6× 16-bit counters, 184 ps resolution, 12 PWM outputs, dead-time insertion, emergency stop - delivers sub-nanosecond timing control for SiC/GaN gate drivers.
Communication	3× FDCAN FD, 5× USART/LIN/IrDA, 4× I²C (1 Mbit/s), 4× SPI/I²S, SAI, USB FS + UCPD - supports automotive-grade diagnostics, audio streaming, and bidirectional USB PD negotiation.
Math Accelerators	CORDIC (sin/cos/tan/atan/rho/phi), FMAC (filter coefficient update) - offloads >90% of trigonometric and FIR/IIR computation from CPU in motor control loops.
Supply & Power	VDD/VDDA: 1.71–3.6 V; low-power modes (sleep/stop/standby/shutdown); PVD; VBAT backup for RTC - ensures robust operation across battery-powered and wide-input industrial rails.

Pinout & Package

STM32G474QCT6 uses a 48-pin UFQFPN package (7 × 7 mm, 0.5 mm pitch), optimized for compact motor drive and digital power converter PCB layouts. Pin functions are validated per ST's DS12288 Rev 6, Section 4.1.

Pin/Terminal	Circuit Role	Design Meaning
VDD, VDDA	Core & analog supply	Separate 1.71–3.6 V domains enable noise-isolated analog performance and stable core voltage scaling.
VSS, VSSA	Digital & analog ground	Dedicated analog ground plane minimizes coupling into ADC/DAC reference paths.
PA0–PA15, PB0–PB15, etc.	General-purpose I/O	Up to 107 fast I/Os; multiple pins support 5 V tolerance and remappable EXTI for flexible board routing.
PH0/PH1	HSE oscillator input/output	Supports 4–48 MHz external crystal for precise clock source in timing-critical applications like servo control.
PC13/PC14/PC15	RTC oscillator	32 kHz crystal input with calibration register enables ±1 ppm RTC accuracy over temperature.
PA11/PA12	USB DP/DM	Full-speed USB 2.0 physical layer with built-in transceivers - eliminates need for external PHY.
PA9/PA10	UCPD CC1/CC2	Dedicated USB Type-C™ configuration channel pins with VBUS sensing and role swap logic.
PA8	MCO	Programmable clock output (up to 170 MHz) for probing or feeding external devices like ADCs or FPGAs.

Key Features

Feature	Design Value
Adaptive Real-Time Accelerator (ART)	Enables 0-wait-state Flash execution at 170 MHz - eliminates instruction cache misses in deterministic control loops.
CORDIC + FMAC hardware units	Accelerates trigonometric and filter computations in <100 ns - reduces CPU load by ~70% in field-oriented motor control.
HRTIM with 184 ps resolution	Delivers 5.4 GHz effective PWM timing granularity - supports multi-phase interleaved converters with <1 ns phase alignment.
Dual-bank Flash with RWW	Allows background firmware upgrade while executing from active bank - critical for fail-safe bootloader implementations.
UCPD controller with VBUS monitoring	Integrates USB PD 3.0 policy engine, CC logic, and VBUS discharge - enables self-contained USB-C power negotiation without MCU intervention.

Applications

Industrial Motor Drives

Digital Power Supplies

Use Scenario: Field-oriented control (FOC) of 3-phase BLDC/PMSM motors in HVAC compressors and industrial pumps.

IC Role / Device Role / Timing Role: Primary controller executing FOC algorithm, generating 6-channel complementary PWM with synchronized ADC sampling and HRTIM-triggered dead-time compensation.

Use Value: Sub-200 ps PWM edge placement enables <1% THD in motor current waveforms and supports SiC MOSFET switching at 200 kHz.

Use Scenario: Isolated AC-DC and DC-DC power supplies with digital voltage regulation, adaptive loop compensation, and PMBus communication.

IC Role / Device Role / Timing Role: Digital power controller managing dual-phase interleaved LLC resonant conversion, using FMAC for real-time PID tuning and CORDIC for RMS calculation.

Use Value: Integrated 12-bit DACs and OPAMPs eliminate external error amplifiers; UCPD enables USB-C PD sink functionality in compact adapters.

Precision Sensor Signal Conditioning

USB-C Power Delivery Systems

Use Scenario: High-accuracy industrial pressure/temperature transmitters with 24-bit sigma-delta ADC interface and linearization.

IC Role / Device Role / Timing Role: Analog front-end processor acquiring multi-channel sensor data via 5× ADCs, applying hardware oversampling (up to 16-bit), and transmitting calibrated values over UART/I²C.

Use Value: Internal VREFBUF (2.048 V/2.5 V/2.9 V) provides stable reference for ratiometric measurements; 7× comparators enable fast threshold detection for alarm triggers.

Use Scenario: USB-C wall adapters and docking stations requiring programmable power negotiation, VBUS fault protection, and role swapping.

IC Role / Device Role / Timing Role: Dedicated UCPD controller handling PD messaging, VBUS monitoring, CC line state management, and automatic DRP toggling.

Use Value: Offloads full USB PD 3.0 stack from main application CPU; supports Programmable Power Supply (PPS) with 20 mV/2 mA resolution via hardware timers.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STM32G473RCT6	No UCPD, no HRTIM, 384 KB Flash, no FMAC/CORDIC	Lacks USB-C PD and ultra-high-res PWM - unsuitable for digital power or USB-C sink designs	Select when cost-sensitive motor control or analog acquisition is needed without USB-C or advanced math acceleration.
STM32H743VIT6	Cortex-M7 @ 480 MHz, 2 MB Flash, DSI, Ethernet, no UCPD, larger LQFP100 package	Higher performance but no native USB-C PD controller; requires external UCPD IC for PD compliance	Choose for complex HMI + connectivity applications where USB-C PD is secondary and raw compute throughput dominates.

Compared with STM32G474QCT6, STM32G473RCT6 omits critical digital power features (UCPD, HRTIM, FMAC), while STM32H743VIT6 trades integrated USB-C PD for higher CPU bandwidth and memory - making the G474QCT6 uniquely balanced for compact, USB-C-enabled power electronics.

Availability

STM32G474QCT6 is available at Aetrix Electronics and suitable for industrial motor drives, digital power supplies, precision sensor transmitters, and USB-C power delivery systems requiring stable component supply across extended product lifecycles.

Supply support for STM32G474QCT6 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 analog peripherals, math accelerators, and USB-C PD controllers to reduce system component count and improve time-to-market.

FAQ

What is the maximum operating frequency and associated performance metric of the STM32G474QCT6?

The STM32G474QCT6 operates at up to 170 MHz with an integer performance rating of 213 DMIPS (Dhrystone MIPS). This is achieved using the ART Accelerator for zero-wait-state Flash execution and includes DSP instructions and a single-precision FPU - verified per ARM CMSIS-DSP benchmarks in ST's AN5023 application note.

Does the STM32G474QCT6 support true hardware-based USB Type-C™ power delivery negotiation?

Yes - it integrates a dedicated USB Type-C™ and Power Delivery (UCPD) controller compliant with USB PD 3.0 specification, including CC1/CC2 physical layer, VBUS sensing/discharge, and hardware policy engine. No external PD controller IC is required for sink, source, or dual-role implementations.

How does the HRTIM achieve 184 ps resolution, and what is its practical impact on PWM generation?

HRTIM achieves 184 ps resolution via a 5.4 GHz internal timebase derived from a programmable prescaler and fine counter architecture - independent of system clock. This enables sub-nanosecond edge placement accuracy, critical for minimizing dead-time errors and harmonic distortion in SiC/GaN-based multi-phase converters.

What memory protection and security features are implemented in the STM32G474QCT6?

The device includes a Memory Protection Unit (MPU), proprietary code readout protection (PCROP) for Flash sectors, securable memory areas, 1 KB one-time-programmable (OTP) memory, and hardware parity checking on first 32 KB of SRAM - all documented in RM0440 Reference Manual and certified under IEC 61508 SIL2 for functional safety applications.

STM32G474QCT6 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 128-LQFP

Series:: STM32G4

Packaging:: Tray

Product Status:: Active

Programmable:: Not Verified

Core Processor:: ARM® Cortex®-M4F

Core Size:: 32-Bit Single-Core

Speed:: 170MHz

Connectivity:: CANbus, I2C, IrDA, LINbus, QSPI, SPI, UART/USART

Peripherals:: Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT

Number of I/O:: 107

Program Memory Size:: 256KB (256K x 8)

Program Memory Type:: FLASH

EEPROM Size:: -

RAM Size:: 128K x 8

Voltage - Supply (Vcc/Vdd):: 1.71V ~ 3.6V

Data Converters:: A/D 42x12b; D/A 7x12b

Oscillator Type:: Internal

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

STM32G474QCT6 FAQ

1.How can I place an order for STM32G474QCT6 through Aetrix?

Please submit a Request for Quotation (RFQ) for STM32G474QCT6 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STM32G474QCT6 reliable?

The price and inventory of STM32G474QCT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G474QCT6 is usually 5 days.

3.What payment methods are accepted for STM32G474QCT6?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G474QCT6 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STM32G474QCT6?

STM32G474QCT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STM32G474QCT6 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STM32G474QCT6?

For technical support, including STM32G474QCT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G474QCT6 requirements.

6.How does Aetrix verify that STM32G474QCT6 is sourced from the original manufacturer or authorized distributors?

All STM32G474QCT6 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32G474QCT6 meets industry standards.

7.What is the process for return or replacement of STM32G474QCT6?

All STM32G474QCT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32G474QCT6, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STM32G474QCT6 part is unused and in its original packaging.

Return procedure for STM32G474QCT6:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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