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STMicroelectronics STM32G474RET3
- Part No.:
- STM32G474RET3
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32G474RET3.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:739
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Product details
Overview
STM32G474RET3 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, 96 KB SRAM (including 32 KB CCM with parity), 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. It targets motor control, digital power conversion, and industrial sensing systems requiring deterministic timing and rich mixed-signal integration.
For engineers reviewing the STM32G474RET3 datasheet, STM32G474RET3 pinout, STM32G474RET3 application, or STM32G474RET3 equivalent, key selection criteria include HRTIM precision for PWM dead-time control, dual-bank Flash with read-while-write for firmware updates, CORDIC/FMAC hardware accelerators for real-time math, and FDCAN 2.0B/Flexible Data Rate support for automotive and industrial networks.
Technical Context
The STM32G474RET3 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 supports concurrent access to Flash, SRAM, and peripherals without bus contention.
It integrates three FDCAN controllers compliant with ISO 11898-1:2015 (including FD mode), a USB 2.0 full-speed interface with LPM/BCD, and a dedicated UCPD controller for USB Type-C™ power delivery negotiation - all operating independently of the main CPU core via DMA and peripheral interconnect routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU and DSP instructions, enabling single-cycle floating-point math and efficient signal processing. |
| Max Clock Frequency | 170 MHz (213 DMIPS), supported by ART Accelerator for deterministic real-time execution from Flash. |
| Flash Memory | 512 KB with ECC, dual-bank architecture allowing seamless firmware update via read-while-write operation. |
| SRAM | 96 KB total: 32 KB CCM SRAM (parity-checked, on instruction/data bus), 64 KB general-purpose SRAM (first 32 KB parity-enabled). |
| Analog Peripherals | 5 × 12-bit ADCs (up to 42 channels, 0.25 µs conversion), 7 × 12-bit DACs (3 buffered external @ 1 MSPS, 4 unbuffered internal @ 15 MSPS). |
| High-Resolution Timer | HRTIM with six 16-bit counters, 184 ps resolution, 12 PWM outputs, dead-time insertion, and emergency stop - critical for synchronous rectification and multi-phase motor drives. |
| Communication Interfaces | 3 × FDCAN (FD mode), 5 × USART/UART (incl. LIN/IrDA), 4 × I²C (Fast Mode Plus), 4 × SPI, 1 × SAI, 1 × USB FS, 1 × UCPD. |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch) package with 64 pins, RoHS-compliant, rated for industrial temperature range (–40 °C to +85 °C). Pin mapping validated per STMicroelectronics DS12288 Rev 6, Section 4.3 (LQFP64 pinout description).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA | Power supply inputs | Core and analog domain supplies (1.71–3.6 V); separate VDDA enables clean analog reference for ADC/DAC/OPAMP. |
| VSS, VSSA | Ground returns | Digital and analog ground separation minimizes noise coupling into sensitive analog circuits. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/Os | Up to 107 fast I/Os; multiple ports support 5 V-tolerant inputs, essential for interfacing with legacy logic or industrial sensors. |
| PH0/PH1 | High-speed crystal oscillator inputs | Support 4–48 MHz external crystal; enables precise clock source for USB, CAN, and ADC sampling synchronization. |
| PC13/PC14/PC15 | RTC-related pins | Support 32.768 kHz crystal or external clock for calendar RTC with alarm and periodic wakeup from Stop/Standby modes. |
| PA11/PA12 | USB D+/D− | Dedicated full-speed USB 2.0 transceivers with built-in termination and LPM support - no external PHY required. |
| PD0/PD1 | FDCAN1 TX/RX | Direct connection to CAN transceiver; supports bit rates up to 5 Mbps in FD mode with flexible data phase configuration. |
Key Features
| Feature | Design Value |
|---|---|
| CORDIC accelerator | Hardware trigonometric computation engine reducing CPU load for motor vector control (FOC) and sensor fusion algorithms. |
| FMAC unit | Filter Math Accelerator supporting real-time FIR/IIR filtering at sample rates exceeding 1 MSPS without CPU intervention. |
| HRTIM resolution | 184 ps timing granularity enables sub-nanosecond PWM edge placement for resonant LLC and GaN-based power converters. |
| UCPD controller | Integrated USB Type-C™ Power Delivery protocol engine with PD message handling, eliminating need for external PD controller IC. |
| OPAMP PGA mode | Six rail-to-rail op-amps with programmable gain (1–40×), all terminals accessible - allows configurable signal conditioning before ADC input. |
Applications
| Industrial Motor Drives | Digital Power Supplies |
|---|---|
Use Scenario: Field-oriented control (FOC) of 3-phase BLDC/PMSM motors in HVAC compressors and servo actuators. IC Role / Device Role / Timing Role: Primary MCU executing real-time FOC loop, managing HRTIM PWM generation, ADC current sampling, and encoder feedback decoding. Use Value: 184 ps HRTIM resolution ensures precise dead-time control across switching frequencies up to 200 kHz, minimizing shoot-through risk in SiC/GaN inverters. | Use Scenario: Digital AC-DC and DC-DC power supplies with adaptive voltage regulation and dynamic load response. IC Role / Device Role / Timing Role: System controller performing voltage/current loop regulation, thermal monitoring, and communication via PMBus over I²C. Use Value: CORDIC + FMAC offloads PID and filter computations from CPU, enabling 100+ kHz control loops while maintaining USB/UCPD communication bandwidth. |
| Automotive Body Electronics | Smart Industrial Sensors |
Use Scenario: Gateway modules managing LIN, CAN FD, and USB diagnostics in vehicle body control units (BCUs). IC Role / Device Role / Timing Role: Central communication hub with three independent FDCAN controllers, LPUART for LIN, and USB for service port connectivity. Use Value: Simultaneous FD CAN frame transmission/reception at 5 Mbps enables high-bandwidth ECU reprogramming and real-time diagnostic logging without bus arbitration delays. | Use Scenario: Condition-monitoring nodes with multi-axis vibration sensing, temperature, and humidity acquisition. IC Role / Device Role / Timing Role: Edge-processing node performing FFT analysis via CORDIC/FMAC, local anomaly detection, and wireless telemetry via UART-to-LoRa bridge. Use Value: On-chip 5 × ADCs with hardware oversampling (up to 16-bit effective resolution) eliminate external sigma-delta converters, reducing BOM cost and PCB area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32G473RET3 | Omits USB FS and UCPD interfaces; identical core, memory, analog, and timer specs. | Not suitable for USB-connected devices or USB-C power negotiation; otherwise drop-in for CAN/motor control only. | Select when USB/UCPD functionality is unnecessary and cost optimization is prioritized. |
| STM32H743VIT6 | Dual-core (Cortex-M7/M4), 480 MHz, 2 MB Flash, 1 MB RAM; lacks HRTIM but adds Ethernet, JPEG codec, and higher ADC throughput. | Better for complex HMI or networked gateways; overkill for standalone motor/power control due to larger footprint and power envelope. | Choose only when application requires >200 MHz compute, Ethernet, or advanced multimedia features beyond G4 capabilities. |
Compared with STM32G474RET3, the G473RET3 removes USB/UCPD to reduce cost and complexity while retaining identical analog/motor control capability; the H743VIT6 offers significantly higher performance and connectivity but sacrifices HRTIM precision and increases power/thermal design burden.
Availability
STM32G474RET3 is available at Aetrix Electronics and suitable for industrial motor drives, digital power supplies, automotive body electronics, and smart industrial sensors requiring stable component supply across extended product lifecycles.
Supply support for STM32G474RET3 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 analog components for industrial, automotive, and consumer markets.
The STM32G4 series targets high-performance, cost-sensitive embedded applications demanding rich analog integration, real-time determinism, and hardware-accelerated math - especially in digital power, motor control, and industrial automation.
FAQ
What is the maximum operating frequency and how is it achieved?
The STM32G474RET3 achieves 170 MHz using its Arm Cortex-M4 core with FPU, enabled by the Adaptive Real-Time (ART) Accelerator that eliminates Flash wait states. This allows deterministic execution of code directly from 512 KB embedded Flash memory, delivering 213 DMIPS performance without external memory or cache reliance.
Does this MCU support USB Type-C™ Power Delivery negotiation?
Yes - the STM32G474RET3 integrates a dedicated USB Type-C™ and Power Delivery (UCPD) controller compliant with USB PD 3.0 specification. It handles BMC physical layer signaling, PD message parsing, and policy engine execution internally, eliminating the need for an external PD controller IC in USB-C power adapter or sink designs.
How many independent CAN FD interfaces does it provide?
The STM32G474RET3 includes three fully independent FDCAN controllers compliant with ISO 11898-1:2015, each supporting Flexible Data Rate (up to 5 Mbps in data phase) and classical CAN 2.0B. All three support timestamping, message filtering, and loopback self-test modes without CPU overhead via dedicated DMA channels.
What analog features make it suitable for motor control?
It integrates five synchronized 12-bit ADCs (0.25 µs conversion), six rail-to-rail op-amps configurable as PGAs, seven 12-bit DACs, and the HRTIM with 184 ps resolution and hardware dead-time insertion - collectively enabling precise current/voltage sensing, gate driver biasing, and nanosecond-accurate PWM generation required for field-oriented control of PMSM/BLDC motors.
STM32G474RET3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-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:
- 52
- Program Memory Size:
- 512KB (512K 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 26x12b; D/A 7x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32G474RET3 FAQ
1.How can I place an order for STM32G474RET3 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32G474RET3 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 STM32G474RET3 reliable?
The price and inventory of STM32G474RET3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G474RET3 is usually 5 days.
3.What payment methods are accepted for STM32G474RET3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G474RET3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32G474RET3?
STM32G474RET3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32G474RET3 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 STM32G474RET3?
For technical support, including STM32G474RET3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G474RET3 requirements.
6.How does Aetrix verify that STM32G474RET3 is sourced from the original manufacturer or authorized distributors?
All STM32G474RET3 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 STM32G474RET3 meets industry standards.
7.What is the process for return or replacement of STM32G474RET3?
All STM32G474RET3 units undergo pre-shipment inspection (PSI). If there is an issue with STM32G474RET3, 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 STM32G474RET3 part is unused and in its original packaging.
Return procedure for STM32G474RET3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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