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STMicroelectronics STM32G431K6U6
- Part No.:
- STM32G431K6U6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 32-UFQFN Exposed Pad
- Datasheet:
-
STM32G431K6U6.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 32UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:2,906
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Product details
Overview
STM32G431K6U6 from STMicroelectronics is a 32-bit Arm® Cortex®-M4 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, dual 12-bit ADCs (0.25 µs conversion), four rail-to-rail comparators, and three operational amplifiers - deployed in motor control, digital power conversion, and industrial sensing systems.
For engineers reviewing the STM32G431K6U6 datasheet, STM32G431K6U6 pinout, STM32G431K6U6 application, or STM32G431K6U6 equivalent, key selection considerations include its 48-pin UFQFPN package, FDCAN support, CORDIC/FMAC math accelerators, 5 V-tolerant I/Os, and low-power timer architecture for real-time deterministic control.
Technical Context
The STM32G431K6U6 implements an Arm Cortex-M4 core with hardware FPU and Adaptive Real-Time (ART) accelerator enabling zero-wait-state execution from Flash at 170 MHz. Its interconnect matrix supports concurrent peripheral access without bus contention.
It integrates dual independent 12-bit ADCs (up to 23 channels, 0.25 µs conversion time) and four ultra-fast analog comparators with programmable hysteresis, alongside three op-amps configurable in PGA mode - all optimized for closed-loop analog signal conditioning in real-time embedded control.
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., PID, FFT) without external co-processor |
| Memory | 128 KB Flash (ECC-enabled), 32 KB SRAM (22 KB + 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 (PGA-capable) → enables multi-sensor acquisition and analog front-end integration |
| Math Acceleration | CORDIC + FMAC units → reduces CPU load for trigonometric and filtering operations in motor control algorithms |
| Timers | 14 timers including 2x advanced motor-control timers (TIM1/TIM8) with dead-time generation and emergency stop → supports 3-phase inverter gate driving |
| Communication | FDCAN (flexible data-rate), 4x USART, 3x SPI, USB FS, UCPD → enables robust fieldbus connectivity and USB-C PD negotiation |
| Package | UFQFPN48 (7 × 7 mm, 0.5 mm pitch) → compact footprint suitable for space-constrained industrial modules |
Pinout & Package
STM32G431K6U6 uses the UFQFPN48 (7 × 7 mm) package with 48 terminals, designed for high-density PCB layouts and thermal efficiency in industrial environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA | Core & analog supply | 1.71–3.6 V operation; separate analog domain ensures ADC/DAC accuracy |
| VSS, VSSA | Digital & analog ground | Independent grounding minimizes noise coupling into sensitive analog circuits |
| PA0–PA15, PB0–PB15, PC13–PC15 | General-purpose I/O | Up to 38 fast I/Os; multiple pins support 5 V tolerance for mixed-voltage interface resilience |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7 | ADC1/ADC2 inputs | Direct connection to dual 12-bit ADCs with hardware oversampling for enhanced resolution |
| PA4, PA5 | DAC1/DAC2 outputs | Buffered external DAC channels (1 MSPS) for precision analog waveform generation |
| PA6, PA7 | Op-amp non-inverting inputs | Accessible op-amp terminals enable configurable gain stages without external components |
| PA11, PA12 | USB D+/D− | Integrated USB 2.0 full-speed PHY eliminates need for external transceiver |
| PD0, PD1 | FDCAN RX/TX | Dedicated CAN FD physical layer interface supporting >5 Mbps data rates |
Key Features
| Feature | Design Value |
|---|---|
| CORDIC accelerator | Hardware trigonometric computation (sin/cos/tan/atan) reduces CPU cycles by >90% vs software implementation |
| FMAC unit | Single-cycle MAC operations for FIR/IIR filter execution - critical for real-time current/voltage loop filtering |
| Advanced motor-control timers | TIM1/TIM8 support 8-channel PWM with programmable dead time and synchronous update → enables precise 3-phase inverter control |
| Internal voltage reference buffer (VREFBUF) | Configurable 2.048 V / 2.5 V / 2.9 V outputs → provides stable reference for ADC/DAC calibration and sensor biasing |
| UCPD controller | Integrated USB Type-C™ Power Delivery negotiation engine → enables bidirectional power role swapping without external MCU |
Applications
| Motor Control System | Digital Power Supply |
|---|---|
Use Scenario: Field-oriented control (FOC) of BLDC/PMSM motors in HVAC blowers and industrial pumps. IC Role / Device Role / Timing Role: Primary control MCU executing real-time FOC algorithm, ADC sampling, PWM generation, and fault protection logic. Use Value: CORDIC/FMAC offloads angle transformations and current-loop filtering; advanced timers deliver sub-100 ns dead-time accuracy for IGBT/MOSFET gate driving. | Use Scenario: Isolated AC/DC and DC/DC converters with adaptive voltage regulation and communication telemetry. IC Role / Device Role / Timing Role: Digital power controller managing feedback loops, soft-start sequencing, and PMBus/UART telemetry reporting. Use Value: Dual ADCs sample voltage/current simultaneously at 1 MSPS; internal VREFBUF ensures stable reference across temperature for ±0.5% output regulation. |
| Industrial Sensor Hub | USB-C PD Source Port |
Use Scenario: Multi-sensor node aggregating temperature, pressure, and vibration data for predictive maintenance gateways. IC Role / Device Role / Timing Role: Sensor fusion processor with analog front-end conditioning, timestamped data logging, and wireless gateway interface. Use Value: Three op-amps condition differential sensor outputs; 16-bit oversampled ADC achieves effective 14-bit ENOB for high-fidelity measurement. | Use Scenario: Embedded USB-C power adapter with variable output (5–20 V) and sink/source capability. IC Role / Device Role / Timing Role: UCPD controller managing PD contract negotiation, VBUS monitoring, and port power state machine. Use Value: Integrated UCPD eliminates external PD controller IC; FDCAN enables local firmware updates via CAN-based debug interface. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32G431K8U6 | Same package and pinout; 256 KB Flash (vs 128 KB), same peripherals and clock speed | Suitable where larger firmware image size or future feature expansion is required | Select when bootloader, OTA stack, or safety libraries require >128 KB Flash |
| STM32G474RET6 | LQFP64 package; adds crypto acceleration (AES/RNG), higher SRAM (128 KB), and additional ADC/DAC channels | Better suited for security-critical or higher-channel-count analog systems | Choose when cryptographic services or expanded analog I/O count are mandatory |
Compared with STM32G431K8U6, the K6U6 offers identical real-time performance and analog capability at lower Flash cost; versus STM32G474RET6, it trades cryptographic features and channel count for smaller footprint and lower BOM cost in cost-sensitive motor and power applications.
Availability
STM32G431K6U6 is available at Aetrix Electronics and suitable for motor control systems, digital power supplies, industrial sensor nodes, and USB-C PD source ports requiring stable component supply and long-term industrial lifecycle support.
Supply support for STM32G431K6U6 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, specializing in microcontrollers, power management, sensors, and automotive ICs.
The STM32G4 series targets high-performance, analog-rich embedded control applications - specifically engineered for digital power conversion, motor control, and industrial automation with integrated math accelerators and precision analog subsystems.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating?
The STM32G431K6U6 operates at up to 170 MHz with an integer performance of 213 DMIPS, measured using the Dhrystone 2.1 benchmark. This performance level is sustained with zero-wait-state execution from Flash memory thanks to the ART Accelerator, making it suitable for demanding real-time control loops without external RAM caching.
Does this MCU support hardware-accelerated mathematical functions?
Yes - it integrates two dedicated hardware accelerators: the CORDIC unit for efficient trigonometric, hyperbolic, and logarithmic computations, and the FMAC (Filter Mathematical Accelerator) for single-cycle multiply-accumulate operations. These reduce CPU load in motor control and digital power applications, enabling faster loop execution and lower power consumption.
What analog peripherals are included and how are they configured?
The device includes two 12-bit ADCs (up to 23 channels, 0.25 µs conversion), four rail-to-rail comparators, three operational amplifiers (all terminals accessible, PGA-capable), and a programmable voltage reference buffer (2.048 V / 2.5 V / 2.9 V). All analog blocks share common calibration registers and can be synchronized for simultaneous sampling and precise timing alignment.
Is USB-C Power Delivery supported natively?
Yes - the STM32G431K6U6 integrates a full USB Type-C™ and Power Delivery (UCPD) controller compliant with USB PD 3.0. It handles BMC encoding/decoding, PD message parsing, VBUS monitoring, and port power state management without external ICs, reducing system complexity and bill-of-materials cost in compact adapters and docking stations.
STM32G431K6U6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 32-UFQFN Exposed Pad
- Series:
- STM32G4
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 170MHz
- Connectivity:
- CANbus, I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT
- Number of I/O:
- 26
- Program Memory Size:
- 32KB (32K 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 11x12b; D/A 4x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32G431K6U6 FAQ
1.How can I place an order for STM32G431K6U6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32G431K6U6 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 STM32G431K6U6 reliable?
The price and inventory of STM32G431K6U6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G431K6U6 is usually 5 days.
3.What payment methods are accepted for STM32G431K6U6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G431K6U6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32G431K6U6?
STM32G431K6U6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32G431K6U6 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 STM32G431K6U6?
For technical support, including STM32G431K6U6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G431K6U6 requirements.
6.How does Aetrix verify that STM32G431K6U6 is sourced from the original manufacturer or authorized distributors?
All STM32G431K6U6 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 STM32G431K6U6 meets industry standards.
7.What is the process for return or replacement of STM32G431K6U6?
All STM32G431K6U6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32G431K6U6, 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 STM32G431K6U6 part is unused and in its original packaging.
Return procedure for STM32G431K6U6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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