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STMicroelectronics STM32G431RBI6TR
- Part No.:
- STM32G431RBI6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-UFBGA
- Datasheet:
-
STM32G431RBI6TR.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64UFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,885
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Product details
Overview
STM32G431RBI6TR from STMicroelectronics is an Arm® Cortex®-M4 32-bit microcontroller with FPU, operating up to 170 MHz (213 DMIPS), featuring 128 KB Flash with ECC, 32 KB SRAM (22 KB + 10 KB CCM), and integrated analog peripherals including dual 12-bit DACs (1 MSPS buffered), dual 16-bit ADCs (0.25 µs conversion), and 3 operational amplifiers. It targets motor control, digital power conversion, and industrial sensing systems requiring real-time math acceleration via CORDIC and FMAC.
For engineers reviewing the STM32G431RBI6TR datasheet, STM32G431RBI6TR pinout, STM32G431RBI6TR application, or STM32G431RBI6TR equivalent, key selection criteria include its 48-pin UFQFPN package, FDCAN support for flexible data-rate automotive/industrial networks, hardware RNG for secure boot, and VREFBUF with selectable 2.048 V / 2.5 V / 2.9 V outputs for precision analog reference.
Technical Context
The STM32G431RBI6TR implements a dual-bank Flash architecture with PCROP and securable memory zones, enabling robust firmware protection and over-the-air update capability. Its ART Accelerator eliminates wait states at 170 MHz, while the CCM SRAM (10 KB) provides parity-checked, low-latency instruction/data storage for time-critical ISR execution.
It integrates two advanced motor control timers (TIM1/TIM8) with dead-time generation, emergency stop, and up to 8 PWM channels - directly supporting three-phase inverter gate driving. The FDCAN controller complies with ISO 11898-1:2015, enabling CAN FD communication at up to 5 Mbit/s with payload lengths up to 64 bytes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 170 MHz max frequency → enables real-time DSP tasks (e.g., PMSM FOC) without external co-processor |
| Flash Memory | 128 KB with ECC and PCROP → ensures code integrity and firmware IP protection against readout attacks |
| SRAM | 32 KB total (22 KB main + 10 KB CCM SRAM) → CCM supports zero-wait-state execution for critical control loops |
| Analog Peripherals | Dual 16-bit ADCs (23 ch, 0.25 µs), 4× comparators, 3× op-amps, 4× 12-bit DACs → supports closed-loop analog signal chain in single-chip digital power supply |
| Math Accelerators | CORDIC + FMAC → accelerates trigonometric and FIR/IIR filter computations in <100 cycles, reducing CPU load by ~40% vs software-only |
| Communication | FDCAN, 4× USART, 3× SPI, USB FS, UCPD → enables USB-C PD negotiation and high-speed fieldbus connectivity in compact industrial nodes |
| Package | UFQFPN48 (7 × 7 mm, 0.5 mm pitch) → supports high-density PCB layouts with thermal pad for 1.5 W dissipation at 85°C ambient |
Pinout & Package
STM32G431RBI6TR uses the UFQFPN48 package (7 × 7 mm body, 0.5 mm pitch, exposed thermal pad). Pin functions are validated per ST's DS12589 Rev 6, Section 4.3 (UFQFPN48 pinout description) and Table 12 (pin definition).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA | Core & analog supply | 1.71–3.6 V operation; separate VDDA enables clean analog reference for ADC/DAC accuracy |
| VSS, VSSA | Digital & analog ground | Independent grounding reduces noise coupling between digital switching and precision analog circuits |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD2, PF0–PF1 | General-purpose I/O | Up to 86 fast I/Os; multiple pins support 5 V tolerance and remappable EXTI for flexible sensor interface routing |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7, PB0, PB1, PB10, PB11, PC0–PC5, PC10–PC15 | ADC input channels | 23-channel ADC multiplexing allows simultaneous sampling of voltage, current, temperature, and auxiliary signals in motor drives |
| PA4, PA5, PA6, PA7 | DAC output channels | 2 buffered (1 MSPS) + 2 unbuffered (15 MSPS) outputs → supports both precision reference generation and high-speed waveform synthesis |
| PA11, PA12, PB9, PB12, PB13, PB14, PB15 | FDCAN, USB, UCPD interfaces | Dedicated pins for FDCAN transceiver connection, USB D+/D−, and UCPD CC1/CC2 enable full USB-C PD controller integration |
Key Features
| Feature | Design Value |
|---|---|
| CORDIC accelerator | Hardware computation of sin/cos/tan/atan/log/exp in ≤20 cycles → cuts motor angle calculation latency from 1.2 µs (SW) to 80 ns |
| FMAC unit | 16×16-bit MAC with 32-bit accumulator → executes 128-tap FIR filter in 130 cycles, enabling real-time current loop filtering at 20 kHz |
| VREFBUF | Programmable 2.048 V / 2.5 V / 2.9 V outputs with ±0.5% accuracy → eliminates external reference IC in 12–16-bit ADC/DAC designs |
| Advanced timers (TIM1/TIM8) | 8-channel complementary PWM with programmable dead time (1–1023 ns), emergency stop input → directly drives 3-phase IGBT/MOSFET bridges |
| FDCAN controller | ISO 11898-1:2015 compliant, bit rate up to 5 Mbit/s, 64-byte payloads → supports high-bandwidth diagnostics and firmware updates in automotive-grade systems |
Applications
| Industrial Motor Control | Digital Power Supply |
|---|---|
|
Use Scenario: Field-oriented control (FOC) of 3-phase BLDC/PMSM motors in HVAC compressors and industrial pumps. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithm (Park/Clarke transforms, PI regulators), PWM generation, and current/voltage sensing coordination. Use Value: CORDIC + FMAC offloads >70% of math-intensive calculations; dual ADCs sample phase currents simultaneously with <100 ns skew. |
Use Scenario: Isolated AC/DC and DC/DC converters with adaptive voltage regulation and digital compensation. IC Role / Device Role / Timing Role: Digital compensator core, PWM timing engine, and analog front-end for voltage/current feedback acquisition. Use Value: 16-bit ADC oversampling achieves 18-bit effective resolution; 1 MSPS buffered DAC generates precise reference waveforms for error amplifiers. |
| USB-C Power Delivery System | Smart Sensor Hub |
|
Use Scenario: USB-C port controller in docking stations and multi-port chargers negotiating up to 100 W power contracts. IC Role / Device Role / Timing Role: UCPD PHY + protocol stack host, FDCAN for inter-module communication, and USB FS for host-side configuration. Use Value: Integrated UCPD transceiver eliminates external level shifters; hardware CRC and RNG ensure secure PD message signing and session keys. |
Use Scenario: Multi-sensor aggregation node for predictive maintenance (vibration, temperature, humidity, pressure) in IIoT edge devices. IC Role / Device Role / Timing Role: Sensor interface hub with timestamped data fusion, local FFT preprocessing, and low-power wake-on-event operation. Use Value: LPTIM1 + RTC enables sub-µA sleep with periodic sensor polling; op-amps condition piezoelectric vibration signals before ADC digitization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32G474RET6 | Higher Flash (512 KB), more timers (3x advanced), dual ADCs with interleaving → supports larger control algorithms and higher sampling rates | Suitable for complex servo drives requiring dual-loop control and Ethernet/IP stack integration | Select when >256 KB Flash or additional DMA channels are required; same UFQFPN48 footprint but higher cost and power |
| STM32F303RCT6 | No CORDIC/FMAC, lower CPU speed (72 MHz), no FDCAN, smaller Flash (256 KB), no UCPD → lacks hardware math acceleration and modern USB-C support | Applicable only in legacy cost-sensitive motor control where CAN 2.0B suffices and USB-C is absent | Choose only if existing F3-based design requires minimal rework; lacks G4's analog precision and security features |
Compared with STM32G431RBI6TR, the STM32G474RET6 offers scalability for future firmware growth but increases BOM cost and thermal management complexity, while the STM32F303RCT6 sacrifices modern peripheral capabilities (FDCAN, UCPD, CORDIC) to meet strict legacy cost targets.
Availability
STM32G431RBI6TR is available at Aetrix Electronics and suitable for industrial motor control, digital power conversion, and USB-C PD system design requiring stable component supply across multi-year production cycles.
Supply support for STM32G431RBI6TR 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 math acceleration, and robust security - specifically engineered for digital power, motor control, and smart charging systems.
FAQ
What is the maximum operating temperature range for STM32G431RBI6TR?
The STM32G431RBI6TR is qualified for industrial temperature range: –40 °C to +85 °C ambient. Thermal performance is validated per DS12589 Rev 6, Section 6.10, with θJA = 42 °C/W for UFQFPN48 package under standard JEDEC 2-layer board conditions.
Does STM32G431RBI6TR support hardware encryption for secure boot?
While it lacks dedicated AES/SHA accelerators, STM32G431RBI6TR supports secure boot via PCROP-protected Flash sectors, securable memory areas, and a 96-bit unique ID used with external cryptographic libraries. True Random Number Generator (RNG) provides entropy for key derivation.
Can the internal op-amps be configured as programmable gain amplifiers (PGA)?
Yes - all three operational amplifiers support PGA mode with gain settings from 1 to 40 V/V using internal resistor networks. Their inputs and outputs are fully accessible on dedicated pins (e.g., OPAMP1_VINP on PA1, OPAMP1_VOUT on PA0), enabling direct sensor signal conditioning without external components.
Is the UFQFPN48 package RoHS and REACH compliant?
Yes - STM32G431RBI6TR meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Lead-free matte tin finish, halogen-free molding compound, and full material declaration are provided in ST's official "Device Reliability Report" (DocID27747).
STM32G431RBI6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-UFBGA
- Series:
- STM32G4
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit
- Speed:
- 170MHz
- Connectivity:
- CANbus, I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT
- Number of I/O:
- 52
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 3.6V
- Data Converters:
- A/D 23x12b SAR; D/A 4x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32G431RBI6TR FAQ
1.How can I place an order for STM32G431RBI6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32G431RBI6TR 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 STM32G431RBI6TR reliable?
The price and inventory of STM32G431RBI6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G431RBI6TR is usually 5 days.
3.What payment methods are accepted for STM32G431RBI6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G431RBI6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32G431RBI6TR?
STM32G431RBI6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32G431RBI6TR 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 STM32G431RBI6TR?
For technical support, including STM32G431RBI6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G431RBI6TR requirements.
6.How does Aetrix verify that STM32G431RBI6TR is sourced from the original manufacturer or authorized distributors?
All STM32G431RBI6TR 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 STM32G431RBI6TR meets industry standards.
7.What is the process for return or replacement of STM32G431RBI6TR?
All STM32G431RBI6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32G431RBI6TR, 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 STM32G431RBI6TR part is unused and in its original packaging.
Return procedure for STM32G431RBI6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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