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STMicroelectronics STM32G474RCT3
- Part No.:
- STM32G474RCT3
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32G474RCT3.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:910
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Product details
Overview
STM32G474RCT3 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 5×12-bit ADCs (0.25 µs), 7×12-bit DACs, 6 operational amplifiers, and a 184-ps-resolution HRTIM - deployed in motor control, digital power conversion, and industrial sensing systems.
For engineers reviewing the STM32G474RCT3 datasheet, STM32G474RCT3 pinout, STM32G474RCT3 application, or STM32G474RCT3 equivalent, key selection criteria include HRTIM timing precision for PWM dead-time control, dual-bank Flash with PCROP for secure firmware updates, CORDIC/FMAC acceleration for real-time math, and FDCAN 2.0B/FD support for automotive and industrial networking.
Technical Context
The STM32G474RCT3 implements a tightly coupled ART Accelerator enabling zero-wait-state execution from Flash at 170 MHz, paired with an MPU and DSP instruction set for deterministic real-time control. Its interconnect matrix routes 16 DMA channels across multiple AHB/APB buses to support concurrent high-bandwidth analog acquisition (up to 42-channel ADC) and time-critical PWM generation.
It integrates three FDCAN controllers compliant with ISO 11898-1:2015 (FD mode), a USB 2.0 full-speed interface with LPM/BCD, and UCPD for USB Type-C™ power delivery negotiation - all synchronized via a flexible clock tree with four oscillators (4–48 MHz HSE, 32 kHz LSE, 16 MHz/32 kHz RC).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU and DSP extensions, enabling single-cycle MAC and saturating arithmetic for motor control algorithms. |
| Max Clock Frequency | 170 MHz with 213 DMIPS - sustained via ART Accelerator, eliminating Flash wait states for deterministic interrupt latency. |
| Memory | 512 KB Flash (dual-bank, ECC, PCROP), 96 KB SRAM (32 KB CCM + 64 KB general-purpose), supporting read-while-write and secure firmware updates. |
| Analog Peripherals | 5×12-bit ADCs (42 channels, 0.25 µs conversion), 7×12-bit DACs (3 buffered external @1 MSPS), 6 op-amps (PGA-capable), 7 comparators. |
| High-Resolution Timer | HRTIM with six 16-bit counters, 184 ps resolution, 12 PWM outputs, dead-time insertion, and emergency shutdown - critical for SiC/GaN gate driving. |
| Communication | 3×FDCAN (flexible data-rate), 5×USART/LPUART, 4×I²C (Fast-mode Plus), 4×SPI (with I²S multiplexing), USB FS, SAI, UCPD. |
| Math Accelerators | CORDIC (sin/cos/atan/hypot) and FMAC (filter coefficient computation) offload CPU for real-time signal processing without software libraries. |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; 64-pin configuration supports full peripheral mapping including HRTIM, FDCAN, USB, and analog I/O with 5 V-tolerant capability on selected GPIOs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD/VSS | Power supply / Ground | Dual 1.71–3.6 V supply domains (VDD for digital core/I/O, VDDA for analog); separate VSSA improves ADC noise immunity. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | 107 total fast I/Os; most support external interrupts and 5 V tolerance - enables direct interfacing with legacy logic or sensors. |
| PA12/PA11 | USB D+/D− | Dedicated full-speed USB 2.0 transceiver pins with internal pull-ups; no external PHY required for device/host operation. |
| PD0/PD1 | FDCAN1_RX/FDCAN1_TX | Differential CAN FD physical layer interface - supports bit rates up to 5 Mbps with protocol-level arbitration and error handling. |
| PC0–PC5 | ADC1_IN0–ADC1_IN5 | Analog input channels mapped to dedicated pins; internal routing allows simultaneous sampling across multiple ADCs for multi-axis current sensing. |
| PH2/PH3 | HRTIM1_CH1A/HRTIM1_CH1B | Complementary high-resolution PWM outputs with programmable dead time (184 ps step) - essential for half-bridge gate driver timing accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Real-Time Accelerator (ART) | Enables 0-wait-state execution from Flash at 170 MHz, reducing code footprint vs. SRAM-resident execution while maintaining determinism. |
| CORDIC & FMAC hardware accelerators | Accelerate trigonometric and filtering operations in <100 ns per instruction - eliminates floating-point library overhead in PMSM FOC loops. |
| Dual-bank Flash with PCROP | Allows secure over-the-air (OTA) firmware updates: one bank executes while the other is reprogrammed, with readout protection preventing IP leakage. |
| HRTIM with 184 ps resolution | Supports sub-nanosecond PWM edge placement for precise timing of SiC/GaN switch transitions and adaptive dead-time compensation. |
| 6 operational amplifiers with PGA mode | All op-amp inputs/outputs accessible externally; configurable gain (1–40×) enables direct current/voltage sensing without external signal conditioning components. |
| FDCAN with FD mode (up to 5 Mbps) | Backward-compatible with classical CAN but enables higher bandwidth for sensor fusion, diagnostics, and control command streaming in automotive ECUs. |
Applications
| Motor Control System | Digital Power Supply |
|---|---|
Use Scenario: Field-oriented control (FOC) of 3-phase BLDC/PMSM motors in HVAC compressors and industrial drives. IC Role / Device Role / Timing Role: Main controller executing real-time FOC algorithm, generating six complementary PWM signals via HRTIM with synchronized ADC sampling. Use Value: 184-ps HRTIM resolution enables <1 ns dead-time accuracy, minimizing shoot-through risk in high-frequency SiC inverters. | Use Scenario: Isolated AC/DC and DC/DC converters using resonant topologies (LLC, ZVS) requiring precise phase-shifted PWM and fast voltage/current loop closure. IC Role / Device Role / Timing Role: Digital power controller managing dual-phase interleaved PWM, real-time voltage regulation, and fault protection via analog comparators. Use Value: Integrated 6 op-amps and 7 comparators allow direct current-sense amplification and cycle-by-cycle overcurrent shutdown (<100 ns response). |
| Industrial PLC I/O Module | Automotive Body Control Unit |
Use Scenario: Modular digital/analog I/O expansion for programmable logic controllers handling 0–10 V, 4–20 mA, and discrete inputs/outputs. IC Role / Device Role / Timing Role: Central processing unit managing isolated analog acquisition, digital I/O scanning, and EtherCAT/PROFINET communication via external PHY. Use Value: 5×12-bit ADCs with hardware oversampling deliver 16-bit effective resolution for precision sensor monitoring without external sigma-delta converters. | Use Scenario: Central body controller managing lighting, window lift, seat position, and door lock functions with LIN, CAN FD, and PWM dimming interfaces. IC Role / Device Role / Timing Role: Application processor coordinating multi-protocol communication (3×FDCAN, 5×USART), LED driver PWM, and secure firmware updates. Use Value: Dual-bank Flash with PCROP ensures safe OTA updates; UCPD interface supports USB-C port power negotiation for service diagnostics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-performance mixed-signal MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32G474RET6 | LQFP64 package, same core/peripherals, but 64-pin variant with identical memory and analog specs; differs only in ordering suffix (T3 vs T6 denotes temperature grade: -40°C to 85°C vs -40°C to 105°C). | Targeting extended-temperature environments such as under-hood automotive or outdoor industrial enclosures. | Select RET6 when ambient operating temperature exceeds 85°C; RCT3 remains optimal for cost-sensitive commercial/industrial applications within standard range. |
| STM32H743VIT6 | Cortex-M7 core at 480 MHz, 2 MB Flash, 1 MB RAM, dual-core option, but lacks HRTIM and integrated op-amps; requires external signal conditioning for motor current sensing. | Suitable for high-throughput applications like vision-based HMI or complex protocol stacks where raw compute > analog integration. | Choose H743VIT6 only when >200 MHz performance and large memory are mandatory; G474RCT3 delivers superior analog integration and deterministic timing for embedded control. |
Compared with STM32G474RET6, the RCT3 offers identical functionality at a lower temperature grade - ideal for cost-constrained designs. Against STM32H743VIT6, it trades peak CPU throughput for on-chip analog richness and ultra-precise PWM timing, making it more suitable for closed-loop power and motion control.
Availability
STM32G474RCT3 is available at Aetrix Electronics and suitable for motor control systems, digital power supplies, industrial PLC modules, and automotive body electronics requiring stable component supply across long production lifecycles.
Supply support for STM32G474RCT3 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 ICs, sensors, and analog devices for industrial, automotive, and consumer markets.
The STM32G4 series targets high-efficiency digital power conversion and advanced motor control, combining real-time analog front-ends with math accelerators and robust communication interfaces for deterministic embedded control.
FAQ
What is the maximum operating temperature range for the STM32G474RCT3?
The STM32G474RCT3 is rated for industrial temperature range: –40 °C to +85 °C. This is confirmed by ST's official datasheet (DS12288 Rev 6, Section 5.3.1) and ordering information table, where the 'T3' suffix explicitly denotes this grade. It does not support extended –40 °C to +105 °C operation - that requires the 'T6' suffix variant (e.g., STM32G474RET6).
Does the STM32G474RCT3 support USB Device mode with CDC ACM class?
Yes, the STM32G474RCT3 supports USB 2.0 Full-Speed Device mode with built-in USB transceiver and on-chip USB PHY. ST provides validated HAL drivers and middleware (USB Device Library v2.7+) for CDC ACM (virtual COM port), HID, MSC, and DFU classes - all tested on LQFP64 packages including RCT3.
How many independent PWM channels can be generated simultaneously using HRTIM?
HRTIM provides 12 independent PWM outputs (6 complementary pairs) across its six 16-bit timers. Each channel supports programmable polarity, dead-time insertion (184 ps resolution), and fault input mapping - enabling full-bridge, three-phase inverter, and multi-phase resonant converter control from a single peripheral.
Is the CORDIC engine accessible via DMA or only CPU-triggered?
The CORDIC peripheral is CPU-triggered only and does not support DMA access. It operates as a memory-mapped accelerator: software writes operands to CORDIC registers, initiates computation via control register, then reads results from output registers. Latency is deterministic (typically 12–25 cycles depending on function), but no DMA handshake signals are defined in the reference manual (RM0440).
STM32G474RCT3 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:
- 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 26x12b; D/A 7x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32G474RCT3 FAQ
1.How can I place an order for STM32G474RCT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32G474RCT3 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 STM32G474RCT3 reliable?
The price and inventory of STM32G474RCT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G474RCT3 is usually 5 days.
3.What payment methods are accepted for STM32G474RCT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G474RCT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32G474RCT3?
STM32G474RCT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32G474RCT3 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 STM32G474RCT3?
For technical support, including STM32G474RCT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G474RCT3 requirements.
6.How does Aetrix verify that STM32G474RCT3 is sourced from the original manufacturer or authorized distributors?
All STM32G474RCT3 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 STM32G474RCT3 meets industry standards.
7.What is the process for return or replacement of STM32G474RCT3?
All STM32G474RCT3 units undergo pre-shipment inspection (PSI). If there is an issue with STM32G474RCT3, 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 STM32G474RCT3 part is unused and in its original packaging.
Return procedure for STM32G474RCT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32G474RCT3 Tags
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