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STMicroelectronics STM32G431R8I6
- Part No.:
- STM32G431R8I6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-UFBGA
- Datasheet:
-
STM32G431R8I6.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 64UFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,599
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Product details
Overview
STM32G431R8I6 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 (2 buffered @ 1 MSPS), dual 12-bit ADCs (0.25 µs conversion), 3 op-amps, 4 comparators, and CORDIC/FMAC math accelerators - deployed in motor control, digital power conversion, and industrial sensing systems.
For engineers reviewing the STM32G431R8I6 datasheet, STM32G431R8I6 pinout, STM32G431R8I6 application, or STM32G431R8I6 equivalent, key selection considerations include its 48-pin UFQFPN package, FDCAN support, USB Full-Speed + UCPD interface, low-power timer with sub-microsecond resolution, and hardware-accelerated trigonometric filtering for real-time control loops.
Technical Context
The STM32G431R8I6 implements a tightly coupled Cortex-M4 core with FPU and ART Accelerator enabling zero-wait-state execution from Flash at 170 MHz. Its analog subsystem integrates three rail-to-rail op-amps (configurable as PGAs), four ultra-fast comparators, and dual independent 12-bit DACs - one pair buffered for external signal generation, the other unbuffered for high-speed internal use (15 MSPS).
Timing architecture includes two 16-bit advanced motor-control timers (TIM1/TIM8) with dead-time insertion, emergency stop, and up to 8 PWM channels; plus a dedicated low-power timer (LPTIM1) supporting sub-millisecond wake-up from Stop modes. The FDCAN controller supports flexible data-rate (FDR) operation compliant with ISO 11898-1:2015.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 170 MHz max frequency → enables real-time DSP tasks without external co-processor |
| Memory | 128 KB Flash (ECC-enabled), 22 KB SRAM + 10 KB CCM SRAM → supports secure firmware storage and deterministic ISR latency |
| Analog Peripherals | Dual 12-bit ADCs (23-channel, 0.25 µs), 4x comparators, 3x op-amps, 4x DAC channels → enables closed-loop analog signal conditioning in single-chip motor drives |
| Math Acceleration | CORDIC + FMAC units → reduces CPU load for sine/cosine, vector rotation, and FIR/IIR filter computation by >90% vs software-only |
| Communication | FDCAN (flexible data rate), USB 2.0 FS + UCPD, 4x USART, 3x SPI, 3x I²C → supports automotive diagnostics, USB-C PD negotiation, and multi-protocol industrial gateways |
| Power Management | VBAT RTC backup, PVD, 4 low-power modes (Stop/Standby/Shutdown) → enables battery-backed timekeeping and <1.5 µA shutdown current for portable equipment |
| Package | UFQFPN48 (7 × 7 mm, 0.5 mm pitch) → compact footprint suitable for space-constrained inverters and smart sensors |
Pinout & Package
STM32G431R8I6 is housed in a 48-pin Ultra-Fine Pitch Quad Flat No-lead (UFQFPN48) package with 0.5 mm pitch, 7 mm × 7 mm body, and exposed thermal pad. Pin functions are validated per STMicroelectronics datasheet DS12589 Rev 6, Section 4.3 (UFQFPN48 pinout description) and Table 12 (pin definition).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA | Main and analog supply rails | 1.71–3.6 V operation; separate analog domain ensures clean reference for ADC/DAC/OPAMP |
| VSS, VSSA | Digital and analog ground | Independent grounding paths minimize noise coupling into sensitive analog circuits |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD2 | General-purpose I/Os | Up to 38 GPIOs with 5 V tolerance on selected pins; all mappable to EXTI for wake-up or edge-triggered events |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7, PB0, PB1 | ADC input channels | Support simultaneous sampling across multiple ADCs for synchronized current/voltage measurement in 3-phase motor control |
| PA4, PA5, PA6, PA7 | DAC output channels | PA4/PA5 = buffered external DAC outputs (1 MSPS); PA6/PA7 = unbuffered internal DACs (15 MSPS) for fast feedback loop injection |
| PA8, PA9, PA10, PA11, PA12, PB8, PB9 | USB/UCPD interface | Integrate full-speed USB PHY + Type-C Power Delivery controller - no external transceiver required for USB-C host/peripheral negotiation |
| PA11, PA12, PB8, PB9, PB12, PB13 | FDCAN1 signals | Support CAN FD frames up to 5 Mbps with flexible data-rate arbitration and payload phases |
| NRST | Active-low reset input | Accepts external reset pulse; internally connected to POR/PDR/BOR circuitry for robust power-on sequencing |
Key Features
| Feature | Design Value |
|---|---|
| CORDIC accelerator | Hardware-computed sine/cosine/arctan with ≤1-cycle latency → eliminates floating-point library overhead in field-oriented control (FOC) |
| FMAC unit | Configurable 32-bit filter engine supporting 16-tap FIR or biquad IIR → enables real-time current harmonics suppression in digital power supplies |
| Advanced timers (TIM1/TIM8) | 8-channel complementary PWM with programmable dead time, fault protection, and emergency stop → meets IEC 61800-5-2 functional safety requirements for motor drives |
| VREFBUF | Programmable 2.048 V / 2.5 V / 2.9 V internal reference → eliminates external precision voltage reference in analog sensor front-ends |
| LPTIM1 | Low-power timer with 32-bit counter, sub-microsecond resolution in Stop mode → enables precise timing of battery-monitoring intervals without waking CPU |
Applications
| Motor Control System | Digital Power Supply |
|---|---|
Use Scenario: Field-oriented control (FOC) of 3-phase BLDC motors in HVAC compressors and industrial pumps. IC Role / Device Role / Timing Role: Main system controller executing FOC algorithm, ADC-sampling synchronization, and 6-channel PWM generation with dead-time compensation. Use Value: Integrated CORDIC and FMAC reduce CPU load by >70%, enabling 20 kHz PWM switching while maintaining 100 µs current loop update time. | Use Scenario: Isolated AC/DC and DC/DC converters with adaptive voltage regulation and fault logging. IC Role / Device Role / Timing Role: Digital controller managing peak-current-mode control, soft-start, overvoltage/overcurrent protection, and USB-C PD negotiation. Use Value: FDCAN enables communication with upstream master; UCPD + USB FS supports firmware updates and real-time telemetry via USB-C cable. |
| Industrial Sensor Node | Smart Lighting Controller |
Use Scenario: Battery-powered environmental monitoring node measuring temperature, humidity, and gas concentration. IC Role / Device Role / Timing Role: Low-power system manager acquiring analog sensor data via ADC, processing with hardware-accelerated filters, and transmitting via LPUART. Use Value: Shutdown current <1.5 µA and LPTIM1 wake-up capability extend battery life to >5 years on CR2032 cell. | Use Scenario: DALI-2 and 0–10 V dimmable LED driver with color tuning and thermal derating. IC Role / Device Role / Timing Role: Analog signal conditioner generating precise DAC-set reference voltages for LED current drivers and monitoring thermal sensors. Use Value: Three programmable VREFBUF outputs eliminate external references; op-amps configured as PGAs enable direct thermistor interface with 12-bit effective resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32G431K8T6 | LQFP32 package (32-pin), same core/peripherals but reduced GPIO count (25 vs 38) and no USB/UCPD | Suitable for cost-sensitive, space-constrained designs without USB-C or CAN FD requirements | Select when board layout favors QFP and USB/CAN interfaces are unnecessary |
| STM32G474RET6 | LQFP64 package, 512 KB Flash, 128 KB SRAM, additional ADC/DAC channels, and crypto acceleration (AES/RNG) | Targeted at higher-security, higher-fidelity analog acquisition (e.g., medical-grade power analyzers) | Choose when larger memory, enhanced security, or extra analog channels justify larger footprint and BOM cost |
Compared with STM32G431K8T6, the STM32G431R8I6 provides USB-C PD and FDCAN in a compact 7×7 mm package; versus STM32G474RET6, it trades memory and crypto for lower cost and smaller size - ideal for volume production of intelligent power modules where feature density outweighs raw capacity.
Availability
STM32G431R8I6 is available at Aetrix Electronics and suitable for motor control systems, digital power converters, industrial sensor nodes, and smart lighting controllers requiring stable component supply across multi-year production cycles.
Supply support for STM32G431R8I6 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, analog-rich embedded applications - specifically engineered for digital power conversion, motor control, and real-time signal processing with hardware math acceleration and robust peripheral integration.
FAQ
What is the maximum operating frequency and associated performance metric of the STM32G431R8I6?
The STM32G431R8I6 operates at up to 170 MHz with an integer performance rating of 213 DMIPS (Dhrystone MIPS), achieved using the Adaptive Real-Time Accelerator (ART) for zero-wait-state Flash execution. Its Cortex-M4 core includes a single-precision FPU and DSP instructions, enabling efficient floating-point math and signal processing without external coprocessors.
Does the STM32G431R8I6 support USB-C Power Delivery negotiation?
Yes - the STM32G431R8I6 integrates a dedicated USB Type-C™ / Power Delivery controller (UCPD) compliant with USB PD 3.0. It supports role swapping (DFP/UFP), VCONN switching, and BMC physical layer signaling, enabling full USB-C port controller functionality without external PD PHY or policy engine ICs.
How many analog-to-digital converter (ADC) instances does the STM32G431R8I6 include, and what are their key specifications?
The device integrates two independent 12-bit ADCs with up to 23 input channels, 0.25 µs conversion time, and hardware oversampling up to 16×. Both ADCs support synchronous sampling, injected/conversion sequences, and operate across the full 0–3.6 V input range. Calibration data is factory-trimmed and stored in system memory for ±1 LSB INL accuracy.
What low-power modes are supported, and what is the typical current consumption in shutdown mode?
The STM32G431R8I6 supports Sleep, Stop, Standby, and Shutdown modes. In Shutdown mode (all clocks and regulators disabled except VBAT domain), typical current consumption is 0.25 µA at 25°C with RTC and backup registers retained - verified per DS12589 Rev 6, Table 32. VBAT supply maintains RTC and 32 bytes of backup SRAM during main power loss.
STM32G431R8I6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-UFBGA
- Series:
- STM32G4
- Packaging:
- Bulk
- 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:
- 64KB (64K 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:
STM32G431R8I6 FAQ
1.How can I place an order for STM32G431R8I6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32G431R8I6 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 STM32G431R8I6 reliable?
The price and inventory of STM32G431R8I6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G431R8I6 is usually 5 days.
3.What payment methods are accepted for STM32G431R8I6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G431R8I6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32G431R8I6?
STM32G431R8I6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32G431R8I6 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 STM32G431R8I6?
For technical support, including STM32G431R8I6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G431R8I6 requirements.
6.How does Aetrix verify that STM32G431R8I6 is sourced from the original manufacturer or authorized distributors?
All STM32G431R8I6 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 STM32G431R8I6 meets industry standards.
7.What is the process for return or replacement of STM32G431R8I6?
All STM32G431R8I6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32G431R8I6, 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 STM32G431R8I6 part is unused and in its original packaging.
Return procedure for STM32G431R8I6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32G431R8I6 Tags
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