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STMicroelectronics STM32G473MBT3
- Part No.:
- STM32G473MBT3
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
STM32G473MBT3.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 80LQFP
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Product details
Overview
STM32G473MBT3 from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, 170 MHz max CPU frequency (213 DMIPS), 512 KB Flash with ECC and dual-bank read-while-write, 128 KB SRAM (96 KB + 32 KB CCM), and integrated analog peripherals including five 12-bit ADCs (0.25 µs conversion), seven DAC channels, six operational amplifiers, and CORDIC/FMAC math accelerators - deployed in motor control, digital power conversion, and industrial sensing systems.
For engineers reviewing the STM32G473MBT3 datasheet, STM32G473MBT3 pinout, STM32G473MBT3 application, or STM32G473MBT3 equivalent, key selection considerations include its 48-pin UFQFPN package, 170 MHz real-time performance with ART Accelerator, FDCAN support for automotive-grade communication, hardware-based trigonometric and filtering acceleration, and robust analog integration for closed-loop control without external signal conditioning.
Technical Context
The STM32G473MBT3 implements an Arm Cortex-M4 core with floating-point unit and Memory Protection Unit (MPU), paired with ST's Adaptive Real-Time (ART) Accelerator enabling zero-wait-state execution from Flash at 170 MHz. Its interconnect matrix supports concurrent high-bandwidth access to Flash, SRAM, and peripherals.
It integrates dedicated hardware accelerators - CORDIC for sin/cos/tan/arctan and FMAC for FIR/IIR filter computation - alongside rich analog resources: five independent 12-bit ADCs with up to 42 channels, seven DACs (3 buffered external @ 1 MSPS, 4 unbuffered internal @ 15 MSPS), six rail-to-rail op-amps configurable as PGAs, and seven ultra-fast comparators with programmable hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU and MPU - enables deterministic real-time control with DSP instruction support and memory isolation for safety-critical tasks. |
| Max Clock Frequency | 170 MHz (213 DMIPS) - delivers high computational throughput for complex control algorithms while maintaining low latency in motor and power applications. |
| Flash Memory | 512 KB with ECC, dual-bank RWW - allows safe firmware updates via bank swapping without halting execution, critical for field-upgradable industrial devices. |
| SRAM | 128 KB total: 96 KB general-purpose + 32 KB CCM SRAM with parity - provides fast, reliable data storage for time-sensitive variables and interrupt handlers. |
| Analog Peripherals | 5 × 12-bit ADCs (0.25 µs), 7 × DACs, 6 × op-amps, 7 × comparators - enables full analog front-end integration for multi-sensor feedback and actuator drive in single-chip motor drives. |
| Math Acceleration | CORDIC + FMAC co-processors - offloads trigonometric and filtering computations from CPU, reducing cycle count by >90% for PMSM FOC or digital PLL implementations. |
| Communication | 3 × FDCAN (flexible data-rate), 5 × USART, 4 × I²C, 4 × SPI, USB FS, UCPD - supports CAN FD networking, isolated serial interfaces, and USB-C PD negotiation in compact embedded systems. |
Pinout & Package
STM32G473MBT3 is housed in a 7 × 7 mm UFQFPN48 package (ST part code A0B9), with 46 user I/O pins, 2 power supply pins (VDD/VSS), and 2 voltage reference pins (VREF+/VREF−). All I/Os are 5 V tolerant where configured as inputs, supporting mixed-voltage system interfacing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Main power supply and ground | Supports 1.71–3.6 V operation; decoupling required per ST AN5053 guidelines to ensure stable 170 MHz core clocking and ADC accuracy. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD2, PF0–PF1 | General-purpose I/Os | 46 total GPIOs mappable to all peripherals; multiple pins support 5 V tolerance, enabling direct connection to legacy 5 V logic or sensors. |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7, PB0, PB1, PB10, PB11, PC0–PC5, PC10–PC13, PD2 | ADC input channels | Support simultaneous sampling across up to 5 ADCs; internal VREFBUF (2.048/2.5/2.9 V) provides stable reference for precision measurement. |
| PA4, PA5, PA6, PA7, PB0, PB1, PB10, PB11, PC0–PC5, PC10–PC13 | DAC output channels | 7 total DAC outputs: 3 buffered external (PA4/PA5/PB10) for driving actuators; 4 unbuffered internal (PA6/PA7/PB0/PB1) for internal signal generation. |
| PA8–PA15, PB3–PB15, PC6–PC15, PD0–PD2, PF0–PF1 | Alternate function (AF) capable | Supports FDCAN1/2/3, USART1–5, LPUART1, SPI1–4, I²C1–4, TIM1/2/3/4/5/15/16/17/20, SAI1, USB, UCPD - enables flexible peripheral routing without PCB redesign. |
Key Features
| Feature | Design Value |
|---|---|
| CORDIC accelerator | Hardware-computed sin/cos/tan/arctan with <100 ns latency - eliminates software lookup tables and interpolation errors in field-oriented control (FOC) loops. |
| FMAC filter engine | Configurable 32-bit MAC unit supporting 24-tap FIR or 2nd-order IIR filters - accelerates digital power supply compensation without CPU load. |
| Advanced motor timers | TIM1/TIM8/TIM20 with 8-channel PWM, dead-time insertion, and emergency stop - enables three-phase inverter gate drive with hardware fault response <100 ns. |
| Internal voltage reference buffer | VREFBUF with selectable 2.048 V / 2.5 V / 2.9 V outputs - provides stable, low-noise reference for ADC/DAC calibration and sensor excitation without external components. |
| FDCAN controllers | 3 × ISO 11898-1 compliant CAN FD interfaces (up to 5 Mbit/s data phase) - supports automotive diagnostics, battery management BMS communication, and high-speed industrial networking. |
Applications
| Industrial Motor Control | Digital Power Supply |
|---|---|
|
Use Scenario: Closed-loop control of BLDC/PMSM motors in HVAC compressors and industrial pumps. IC Role / Device Role / Timing Role: Real-time FOC computation engine with synchronized ADC sampling, PWM generation, and fault protection. Use Value: Integrated CORDIC/FMAC reduces CPU load by 40%, enabling dual-motor control on single chip while maintaining 20 kHz PWM switching. |
Use Scenario: Digital AC-DC and DC-DC converters with adaptive voltage regulation and thermal derating. IC Role / Device Role / Timing Role: Primary controller executing PID loops, voltage/current monitoring, and soft-start sequencing. Use Value: Five ADCs sample input/output voltage/current simultaneously; FMAC accelerates Type-III compensator calculation in <5 µs per cycle. |
| Smart Sensor Hub | USB-C Power Delivery Endpoint |
|
Use Scenario: Multi-sensor condition monitoring node aggregating temperature, pressure, and vibration data. IC Role / Device Role / Timing Role: Signal acquisition and preprocessing unit with analog front-end, oversampling, and edge-triggered wake-up. Use Value: On-chip op-amps condition piezoelectric sensor signals; 16-bit oversampled ADC achieves 14.2 ENOB for vibration analysis without external PGA. |
Use Scenario: USB-C port controller in docking stations and monitors negotiating power contracts up to 100 W. IC Role / Device Role / Timing Role: UCPD PHY + policy engine managing PD messaging, VBUS control, and role swap negotiation. Use Value: Integrated UCPD peripheral eliminates need for external PD controller IC; supports USB PD 3.0 with programmable fast-role swap. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32G474RET6 | 64-pin LQFP, 512 KB Flash, 256 KB SRAM, same peripherals - adds USB HS (with PHY) and one extra ADC. | Better suited for applications requiring higher I/O count, USB host capability, or larger RAM for protocol stacks (e.g., USB CDC + BLE bridging). | Select when board layout accommodates larger package and USB High-Speed or extended RAM is required. |
| STM32F303K8T6 | 32-pin LQFP, Cortex-M4F @ 72 MHz, 64 KB Flash, 16 KB SRAM, no CORDIC/FMAC, only 1 ADC and 2 DACs. | Limited analog integration and compute bandwidth - suitable for basic motor control or sensor nodes without advanced math or multi-channel acquisition. | Choose only for cost-sensitive, low-complexity designs where 170 MHz performance and hardware accelerators are unnecessary. |
Compared with STM32G473MBT3, the STM32G474RET6 offers more I/O and USB HS but requires larger PCB area, while the STM32F303K8T6 sacrifices math acceleration, analog density, and clock speed - making it unsuitable for demanding FOC or digital power applications where G473MBT3's hardware co-processors deliver measurable cycle savings.
Availability
STM32G473MBT3 is available at Aetrix Electronics and suitable for industrial motor drives, digital power supplies, smart sensor hubs, and USB-C PD endpoints requiring stable component supply across long-lifecycle production programs.
Supply support for STM32G473MBT3 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 chips for industrial, automotive, and consumer markets.
The STM32G4 series targets high-performance, analog-rich embedded applications - specifically engineered for digital power conversion, motor control, and real-time signal processing where hardware math acceleration and precision analog integration reduce system BOM and improve determinism.
FAQ
What is the maximum operating temperature range for STM32G473MBT3?
The STM32G473MBT3 is qualified for industrial temperature range: –40 °C to +85 °C ambient. Its thermal characteristics (θJA = 42.5 °C/W in UFQFPN48) allow sustained 170 MHz operation under full peripheral load when PCB layout follows ST's recommended copper pour and via placement guidelines in AN5053.
Does STM32G473MBT3 support secure boot and firmware encryption?
Yes - it includes securable memory areas, proprietary code readout protection (PCROP), and 1 KB one-time-programmable (OTP) memory for cryptographic keys. Secure boot is implemented via ROM-based bootloader with hash verification; AES-256 encryption is supported in hardware via the cryptographic processor (CRYP) peripheral.
Can the CORDIC unit perform hyperbolic functions like sinh/cosh?
No - the CORDIC unit in STM32G473MBT3 is configured exclusively for circular (sin/cos/tan/arctan) and linear (multiply/divide) modes per RM0440 reference manual. Hyperbolic functions are not supported in hardware and must be computed in software using Taylor series or lookup tables.
How many independent PWM channels can be generated simultaneously?
Up to 24 independent PWM outputs are possible: TIM1/TIM8/TIM20 each support 8 complementary PWM channels with dead-time control, and additional channels are available from TIM2–TIM5, TIM15–TIM17. All are fully configurable for center-aligned, edge-aligned, or asymmetric modes with independent duty-cycle registers.
STM32G473MBT3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- -
- Series:
- -
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
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- Speed:
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- Peripherals:
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STM32G473MBT3 FAQ
1.How can I place an order for STM32G473MBT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32G473MBT3 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 STM32G473MBT3 reliable?
The price and inventory of STM32G473MBT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G473MBT3 is usually 5 days.
3.What payment methods are accepted for STM32G473MBT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G473MBT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32G473MBT3?
STM32G473MBT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32G473MBT3 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 STM32G473MBT3?
For technical support, including STM32G473MBT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G473MBT3 requirements.
6.How does Aetrix verify that STM32G473MBT3 is sourced from the original manufacturer or authorized distributors?
All STM32G473MBT3 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 STM32G473MBT3 meets industry standards.
7.What is the process for return or replacement of STM32G473MBT3?
All STM32G473MBT3 units undergo pre-shipment inspection (PSI). If there is an issue with STM32G473MBT3, 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 STM32G473MBT3 part is unused and in its original packaging.
Return procedure for STM32G473MBT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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