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STMicroelectronics STM32G431C6U6
- Part No.:
- STM32G431C6U6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
STM32G431C6U6.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:1,755
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Product details
Overview
STM32G431C6U6 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 (1 MSPS buffered), dual 12-bit ADCs (0.25 µs conversion), four rail-to-rail comparators, three operational amplifiers, and CORDIC/FMAC math accelerators - deployed in motor control, digital power conversion, and industrial sensor interface systems.
For engineers reviewing the STM32G431C6U6 datasheet, STM32G431C6U6 pinout, STM32G431C6U6 application, or STM32G431C6U6 equivalent, key selection considerations include its UFQFPN32 package, 5 V-tolerant I/Os, FDCAN support, UCPD controller for USB Type-C™, and hardware-accelerated trigonometric/filter math functions essential for real-time control loop execution.
Technical Context
The STM32G431C6U6 implements an Arm Cortex-M4 core with FPU and Adaptive Real-Time (ART) Accelerator enabling zero-wait-state Flash execution at 170 MHz. Its memory subsystem includes 128 KB ECC-protected Flash, 22 KB SRAM with parity on first 16 KB, and 10 KB CCM SRAM with parity - all accessible via multi-AHB interconnect matrix for deterministic peripheral access.
Analog integration centers on two independent 12-bit ADCs (up to 23 channels, 0.25 µs conversion), four ultra-fast comparators, three OPAMPs configurable as programmable-gain amplifiers (PGA), and dedicated hardware accelerators: CORDIC for sin/cos/atan/log/exp and FMAC for FIR/IIR filtering - directly supporting closed-loop control without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 170 MHz max frequency (213 DMIPS), MPU, DSP instructions |
| Memory | 128 KB Flash with ECC & PCROP; 22 KB SRAM (16 KB parity-checked); 10 KB CCM SRAM (parity-checked) |
| Analog Peripherals | 2 × 12-bit ADCs (0.25 µs, 23 ch); 4 × comparators; 3 × OPAMPs (PGA mode); 4 × 12-bit DACs (2 buffered @ 1 MSPS) |
| Math Acceleration | CORDIC engine for trigonometric/logarithmic functions; FMAC for 32-tap FIR/16-stage IIR filtering |
| Timers & Control | 14 timers including 2 × advanced motor-control timers (8 PWM + dead-time + emergency stop), LPTIM, RTC with alarm |
| Communication | FDCAN (flexible data-rate); 4 × USART/UART (LIN/IrDA); 3 × SPI (I2S-mux); 3 × I²C (Fast-mode+); USB FS + UCPD; SAI |
| Supply & Power | 1.71–3.6 V operation; POR/PDR/BOR; PVD; sleep/stop/standby/shutdown modes; VBAT for RTC/backup registers |
Pinout & Package
STM32G431C6U6 is housed in a 32-pin UFQFPN (5 × 5 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are validated per STMicroelectronics DS12589 Rev 6, Section 4.1 (UFQFPN32 pinout description).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA | Core & analog supply | 1.71–3.6 V input; separate analog domain for precision ADC/DAC/OPAMP operation |
| VSS, VSSA | Digital & analog ground | Independent grounding paths minimize noise coupling into sensitive analog circuits |
| PA0–PA15, PB0–PB15, PC13–PC15 | General-purpose I/O | Up to 37 fast I/Os; most 5 V tolerant; all mappable to external interrupt vectors |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7, PB0, PB1 | Analog input/output | ADC1/ADC2 inputs; DAC1/DAC2 outputs; OPAMP non-inverting/inverting inputs & outputs |
| PA9, PA10, PB6, PB7, PB8, PB9 | Communication interfaces | USART1 TX/RX, I²C1 SCL/SDA, SPI1 MOSI/MISO/SCK - multiplexed per AF function mapping |
| PA11, PA12, PA13, PA14, PA15 | USB & debug | USB DP/DM; SWDIO/SWCLK; NRST - enables full-speed USB 2.0 and serial wire debug |
Key Features
| Feature | Design Value |
|---|---|
| CORDIC accelerator | Hardware-computed sin/cos/tan/atan/log/exp/sqrt in <100 ns - eliminates floating-point library overhead in motor commutation |
| FMAC filter engine | Configurable 32-tap FIR or 16-stage IIR filter running autonomously - offloads PID loop computation from CPU |
| Advanced motor timers | TIM1/TIM8 with 8-channel PWM, programmable dead time, and emergency stop input - supports 3-phase BLDC/PMSM drives |
| UCPD controller | Integrated USB Type-C™ power delivery protocol engine - enables source/sink negotiation without external MCU or transceiver |
| OPAMP PGA mode | Three rail-to-rail OPAMPs with gain selectable from 1× to 40× via internal resistor network - simplifies sensor signal conditioning |
Applications
| Industrial Motor Drive | Digital Power Supply |
|---|---|
|
Use Scenario: Field-oriented control (FOC) of 3-phase BLDC motors in HVAC blowers and industrial pumps. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithm using CORDIC for Clarke/Park transforms and FMAC for current-loop filtering; TIM1/TIM8 generate synchronized 6-PWM with dead-time and emergency stop. Use Value: Sub-microsecond math acceleration reduces CPU load by >40%, enabling 20 kHz PWM switching while maintaining 100 µs current loop update. |
Use Scenario: Closed-loop voltage/current regulation in AC-DC and DC-DC SMPS with adaptive compensation. IC Role / Device Role / Timing Role: Dual 12-bit ADCs sample primary-side current and output voltage simultaneously; DACs drive error amplifier references; OPAMPs implement analog compensators. Use Value: Hardware-synchronized sampling and 1 MSPS DAC output enable <5 µs control loop latency - critical for transient response in 500 kHz switching converters. |
| USB Type-C™ PD Sink | Condition Monitoring Sensor Hub |
|
Use Scenario: Smart dock or portable monitor negotiating power contracts up to 100 W via USB PD 3.0. IC Role / Device Role / Timing Role: UCPD controller handles BMC physical layer and PD protocol stack; FDCAN routes power policy commands to system MCU; GPIOs manage VBUS discharge and CC line switching. Use Value: On-chip UCPD eliminates need for external PD controller IC, reducing BOM count and PCB area by 35% versus discrete solutions. |
Use Scenario: Multi-sensor node aggregating temperature, vibration, and humidity data for predictive maintenance in factory equipment. IC Role / Device Role / Timing Role: Internal temperature sensor and VREFBUF (2.048 V) provide calibration references; ADC oversampling achieves 16-bit effective resolution; RTC triggers periodic wake-up for low-power sensing bursts. Use Value: Integrated analog front-end and hardware oversampling deliver ±0.5 °C temperature accuracy without external precision references or op-amp buffers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32G431K6U6 | LQFP32 (48-pin) package; same core/peripherals but 2 additional ADC channels and 1 extra timer channel | Requires larger PCB footprint; better suited for designs needing more analog inputs or capture/compare resources | Select when pin count and analog channel count exceed UFQFPN32 constraints - not drop-in compatible due to different pinout and package |
| STM32F303C8T6 | No CORDIC/FMAC; 72 MHz Cortex-M4; 64 KB Flash; only 1 × 12-bit DAC; no UCPD or FDCAN | Lacks hardware math acceleration and USB Type-C™ support - unsuitable for high-dynamic-range motor control or PD sink designs | Consider only for cost-sensitive legacy upgrades where FDCAN, UCPD, and sub-µs math acceleration are unnecessary |
Compared with STM32G431K6U6, the C6U6 offers identical feature set in a smaller 5×5 mm UFQFPN32 package - ideal for space-constrained USB-C PD or motor driver modules; versus STM32F303C8T6, it delivers 2.4× higher compute throughput, integrated USB PD control, and deterministic analog math acceleration essential for next-generation digital power.
Availability
STM32G431C6U6 is available at Aetrix Electronics and suitable for industrial motor drives, digital power supplies, and USB Type-C™ PD sink applications requiring stable component supply across extended production lifecycles.
Supply support for STM32G431C6U6 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 applications - designed specifically for digital power conversion, motor control, and USB Type-C™ PD systems requiring real-time math acceleration and robust mixed-signal integration.
FAQ
What is the maximum operating frequency and associated performance metric of the STM32G431C6U6?
The STM32G431C6U6 operates at up to 170 MHz with an integer performance rating of 213 DMIPS (Dhrystone MIPS), achieved via the Arm Cortex-M4 core with FPU and ART Accelerator enabling zero-wait-state execution from Flash memory. This frequency is guaranteed across the full industrial temperature range (–40°C to +85°C) under 1.71–3.6 V supply conditions.
Does the STM32G431C6U6 support USB Type-C™ Power Delivery, and what hardware blocks enable it?
Yes - the STM32G431C6U6 integrates a dedicated USB Type-C™ and Power Delivery (UCPD) controller compliant with USB PD 3.0. It includes BMC physical layer transceivers, PD protocol engine, CC line monitoring, VBUS discharge control, and hardware-based message handling - eliminating the need for external PD controller ICs in sink or dual-role applications.
How many analog-to-digital converter (ADC) instances does the STM32G431C6U6 have, and what are their key timing specifications?
The device features two independent 12-bit ADCs (ADC1 and ADC2), each supporting up to 19 external channels plus internal sources (temperature sensor, VREFINT, VBAT). Maximum conversion time is 0.25 µs (4 MSPS sampling rate), with hardware oversampling enabling up to 16-bit effective resolution. Both ADCs support simultaneous or interleaved sampling modes.
What packaging option is used for the STM32G431C6U6, and what are its thermal and layout advantages?
The STM32G431C6U6 uses the UFQFPN32 package: 32-pin, 5 × 5 mm body, 0.5 mm pitch, with exposed thermal pad. This compact footprint reduces PCB area by ~40% versus LQFP32, while the thermal pad improves heat dissipation - critical for sustained 170 MHz operation in enclosed industrial enclosures or thermally constrained USB-C adapters.
STM32G431C6U6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-UFQFN Exposed Pad
- 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:
- 42
- 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 18x12b SAR; D/A 4x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32G431C6U6 FAQ
1.How can I place an order for STM32G431C6U6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32G431C6U6 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 STM32G431C6U6 reliable?
The price and inventory of STM32G431C6U6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G431C6U6 is usually 5 days.
3.What payment methods are accepted for STM32G431C6U6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G431C6U6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32G431C6U6?
STM32G431C6U6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32G431C6U6 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 STM32G431C6U6?
For technical support, including STM32G431C6U6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G431C6U6 requirements.
6.How does Aetrix verify that STM32G431C6U6 is sourced from the original manufacturer or authorized distributors?
All STM32G431C6U6 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 STM32G431C6U6 meets industry standards.
7.What is the process for return or replacement of STM32G431C6U6?
All STM32G431C6U6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32G431C6U6, 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 STM32G431C6U6 part is unused and in its original packaging.
Return procedure for STM32G431C6U6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32G431C6U6 Tags
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