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STMicroelectronics STM32G474MEY6TR
- Part No.:
- STM32G474MEY6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 81-UFBGA, WLCSP
- Datasheet:
-
STM32G474MEY6TR.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 81WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,286
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Product details
Overview
STM32G474MEY6TR 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 mathematical accelerators (CORDIC, FMAC). It delivers 184 ps resolution on its HRTIM for precision motor control in industrial inverters.
For engineers reviewing the STM32G474MEY6TR datasheet, STM32G474MEY6TR pinout, STM32G474MEY6TR application, or STM32G474MEY6TR equivalent, key selection criteria include Hi-Res timer capability, dual-bank Flash read-while-write support, FDCAN FD interface compliance, and 5 V-tolerant GPIOs for mixed-voltage system interfacing.
Technical Context
This MCU integrates an Adaptive Real-Time Accelerator (ART) enabling zero-wait-state execution from Flash at 170 MHz, alongside a multi-AHB interconnect matrix supporting concurrent peripheral access. Its analog subsystem includes five 12-bit ADCs (0.25 µs conversion), seven 12-bit DAC channels (3 buffered external @ 1 MSPS), six rail-to-rail op-amps configurable as PGAs, and a programmable voltage reference buffer (2.048 V / 2.5 V / 2.9 V).
The timing architecture combines a 17-timer suite: one HRTIM (6×16-bit counters, 184 ps resolution), three advanced motor-control timers (TIM1/TIM8/TIM20) with dead-time generation and emergency stop, plus FDCAN controllers compliant with ISO 11898-1:2015 for flexible data-rate automotive and industrial networking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 with FPU, 170 MHz max frequency → enables real-time DSP and control loops without external co-processor |
| Memory | 512 KB Flash (ECC, dual-bank RWW), 96 KB SRAM (32 KB CCM w/parity) → supports secure firmware updates and deterministic ISR latency |
| ADC/DAC | 5×12-bit ADCs (42 ch, 0.25 µs), 7×12-bit DACs (3 ext buffered @ 1 MSPS) → high-fidelity sensor acquisition and analog actuator drive |
| HRTIM | 6×16-bit counters, 184 ps resolution, 12 PWM outputs → sub-nanosecond timing control for SiC/GaN gate drivers |
| FDCAN | 3×FDCAN controllers (ISO 11898-1:2015 compliant) → supports CAN FD up to 5 Mbit/s for high-bandwidth vehicle/industrial bus systems |
| I/O | Up to 107 fast I/Os, 5 V tolerant on selected pins → direct interfacing with legacy 5 V logic and industrial sensors |
| Math Accelerators | CORDIC (trig/log/exp), FMAC (filtering) → offloads 80%+ of compute-intensive math from CPU, freeing cycles for application logic |
Pinout & Package
STM32G474MEY6TR uses the UFQFPN48 (7 × 7 mm) package - a 48-pin, 0.5 mm pitch, near-chip-scale quad flat no-lead package optimized for space-constrained industrial and motor control PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD/VSS | Power supply / Ground | Dual 1.71–3.6 V domain support enables low-power operation and compatibility with Li-ion battery rails |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | 107 total I/Os; many support 5 V tolerance and remappable EXTI/interrupt vectors for flexible board layout |
| PH0/PH1 | HSE oscillator input/output | Supports 4–48 MHz crystal for precise clock source; essential for USB, CAN, and RTC synchronization |
| PC13/PC14/PC15 | RTC/LSE functions | 32 kHz LSE crystal pins with calibration → enables accurate calendar RTC and ultra-low-power wake-up from standby |
| PA11/PA12 | USB 2.0 FS D+/D− | Integrated USB PHY with LPM/BCD → allows device enumeration without external transceiver |
| PD0/PD1 | FDCAN1 TX/RX | Dedicated differential CAN FD transceiver pins → eliminates need for external CAN PHY in cost-sensitive designs |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Real-Time Accelerator (ART) | Enables 0-wait-state execution from Flash at 170 MHz → eliminates cache misses in time-critical control code |
| CORDIC + FMAC accelerators | Hardware trigonometric and filtering computation → reduces CPU load by >70% in motor FOC or power quality algorithms |
| HRTIM with 184 ps resolution | Sub-nanosecond PWM edge placement → enables precise dead-time control for SiC/GaN half-bridges |
| Proprietary Code Readout Protection (PCROP) | Configurable Flash memory locking per sector → protects IP in field-deployed firmware against reverse engineering |
| UCPD controller (USB Type-C™ PD) | Integrated USB Power Delivery negotiation engine → supports bidirectional power negotiation without external PD controller IC |
Applications
| Industrial Motor Drives | Renewable Energy Inverters |
|---|---|
Use Scenario: Closed-loop field-oriented control (FOC) of 3-phase PMSM/BLDC motors in HVAC compressors and servo drives. IC Role / Device Role / Timing Role: Primary controller executing FOC algorithm, generating 6-channel complementary PWM with synchronized ADC sampling and 184 ps HRTIM timing. Use Value: CORDIC/FMAC offload enables 20 kHz current loop execution at 170 MHz; PCROP secures proprietary motor control IP. | Use Scenario: Grid-tied solar microinverters requiring high-efficiency MPPT and harmonic mitigation. IC Role / Device Role / Timing Role: System-on-chip managing DC-DC boost, H-bridge modulation, grid synchronization, and communication via FDCAN/USB. Use Value: Dual-bank Flash allows seamless firmware updates during operation; 5 V-tolerant I/Os interface directly with isolated gate drivers and sensors. |
| Automotive Body Control Modules | Programmable Logic Controllers (PLCs) |
Use Scenario: Centralized body electronics controlling lighting, window lift, seat position, and LIN/CAN gateway functions. IC Role / Device Role / Timing Role: Main MCU handling multi-protocol communication (FDCAN, LIN, UART), PWM dimming, and diagnostic monitoring. Use Value: Three FDCAN controllers enable redundant bus architecture; LPUART supports always-on low-power wake-up from sleep mode. | Use Scenario: Compact modular PLCs performing real-time I/O scanning, ladder logic execution, and EtherCAT slave interfacing. IC Role / Device Role / Timing Role: Deterministic real-time controller with hardware timers for cycle-accurate I/O update and watchdog supervision. Use Value: 17-timer suite (including SysTick, WWDG, IWDG) ensures strict timing compliance; 96 KB SRAM accommodates runtime tag tables and motion buffers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32G474RET6 | LQFP64 package (64-pin), same core/peripherals but larger footprint and higher I/O count (up to 51 GPIOs vs. 38 in UFQFPN48) | Better suited for designs requiring more analog inputs, SPI/I2C peripherals, or external memory expansion via FSMC | Select when board space permits and additional GPIOs or FSMC interface are needed for display or memory expansion |
| STM32G431KBT6 | Lower Flash (128 KB), no CORDIC/FMAC, single-bank Flash only, 48-pin LQFP package | Targeted at cost-sensitive motor control where Hi-Res timing and math acceleration are not required | Choose for entry-level BLDC drives or simple PLC I/O modules where 184 ps timing and dual-bank RWW are unnecessary |
Compared with STM32G474RET6, the STM32G474MEY6TR trades I/O count and package size for superior thermal performance and compactness in dense motor control layouts; versus STM32G431KBT6, it adds critical silicon-level features-HRTIM, CORDIC, FMAC, and dual-bank Flash-that enable next-generation SiC/GaN inverter architectures.
Availability
STM32G474MEY6TR is available at Aetrix Electronics and suitable for industrial motor drives, renewable energy inverters, automotive body control modules, and programmable logic controllers requiring stable component supply across long production lifecycles.
Supply support for STM32G474MEY6TR 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-performance, resource-rich embedded control applications-specifically engineered for digital power conversion, motor control, and real-time signal processing with hardware math acceleration and ultra-precise timing.
FAQ
What is the maximum operating frequency and associated DMIPS rating?
The STM32G474MEY6TR operates at up to 170 MHz with an integer performance rating of 213 DMIPS (Dhrystone 2.1), measured under conditions including ART Accelerator enabled and zero-wait-state Flash execution. This performance level is sustained across the full temperature range (–40°C to +85°C) and supply voltage (1.71–3.6 V).
Does this MCU support USB Device functionality without external components?
Yes. The STM32G474MEY6TR integrates a full-speed USB 2.0 transceiver with built-in PHY, LPM (Link Power Management), and Battery Charging Detection (BCD) support. Only passive termination resistors and a USB connector are required-no external transceiver or level shifter is needed for standard USB device operation.
How does the HRTIM differ from standard general-purpose timers in this MCU?
The HRTIM provides six independent 16-bit counters with 184 ps resolution (vs. nanosecond-scale resolution in TIM1/TIM8), dedicated dead-time insertion units, burst mode operation, and synchronous ADC triggering. Unlike general-purpose timers, it supports complex waveform synthesis (e.g., interleaved carriers for multiphase converters) and hardware fault protection with emergency stop inputs.
Is the 512 KB Flash memory protected against unauthorized readout?
Yes. The Flash includes Proprietary Code Readout Protection (PCROP), allowing per-sector locking with configurable read/write/execute permissions. Combined with securable memory areas and 1 KB OTP for keys, it provides robust firmware IP protection validated per IEC 62443-3-3 requirements for industrial control systems.
STM32G474MEY6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 81-UFBGA, WLCSP
- Series:
- STM32G4
- Packaging:
- Tape & Reel (TR)
- 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:
- 67
- 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 42x12b; D/A 7x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32G474MEY6TR FAQ
1.How can I place an order for STM32G474MEY6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32G474MEY6TR 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 STM32G474MEY6TR reliable?
The price and inventory of STM32G474MEY6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G474MEY6TR is usually 5 days.
3.What payment methods are accepted for STM32G474MEY6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G474MEY6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32G474MEY6TR?
STM32G474MEY6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32G474MEY6TR 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 STM32G474MEY6TR?
For technical support, including STM32G474MEY6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G474MEY6TR requirements.
6.How does Aetrix verify that STM32G474MEY6TR is sourced from the original manufacturer or authorized distributors?
All STM32G474MEY6TR 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 STM32G474MEY6TR meets industry standards.
7.What is the process for return or replacement of STM32G474MEY6TR?
All STM32G474MEY6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32G474MEY6TR, 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 STM32G474MEY6TR part is unused and in its original packaging.
Return procedure for STM32G474MEY6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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