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STMicroelectronics STM32G431C8T3
- Part No.:
- STM32G431C8T3
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32G431C8T3.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,717
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Product details
Overview
STM32G431C8T3 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), 4 ultra-fast comparators, and 3 operational amplifiers-designed for precision motor control and digital power conversion systems.
For engineers reviewing the STM32G431C8T3 datasheet, STM32G431C8T3 pinout, STM32G431C8T3 application, or STM32G431C8T3 equivalent, key selection criteria include its 48-pin LQFP package, FDCAN support for flexible data-rate automotive/industrial networking, CORDIC/FMAC hardware accelerators for real-time trigonometric and filtering math, and VREFBUF with selectable 2.048 V / 2.5 V / 2.9 V reference outputs.
Technical Context
The STM32G431C8T3 implements a tightly coupled Arm Cortex-M4 core with FPU and Adaptive Real-Time (ART) Accelerator enabling zero-wait-state execution from Flash at 170 MHz. Its memory subsystem includes 128 KB Flash with PCROP and ECC, plus 32 KB SRAM segmented into 22 KB general-purpose SRAM (16 KB parity-checked) and 10 KB CCM SRAM (parity-checked) on both instruction and data buses.
Analog integration centers on two independent 16-bit ADCs (up to 23 channels, hardware oversampling), four rail-to-rail comparators with programmable hysteresis, three op-amps configurable as programmable-gain amplifiers (PGA) with all terminals accessible, and a dedicated voltage reference buffer (VREFBUF) supporting three calibrated output voltages for high-precision sensor or DAC referencing.
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 (ECC, PCROP, 1 KB OTP), 22 KB SRAM + 10 KB CCM SRAM (all parity-checked) |
| ADC | Dual 16-bit ADCs, 0.25 µs conversion time, up to 23 channels, hardware oversampling support |
| DAC | 4 × 12-bit DACs: 2 buffered external (1 MSPS), 2 unbuffered internal (15 MSPS) |
| Timers | 14 timers including 2× advanced motor-control timers (TIM1/TIM8), 1× 32-bit general-purpose timer, 2× watchdogs, RTC with alarm/wakeup |
| Communication | FDCAN (flexible data rate), 4× USART/UART (LIN/IrDA/ISO7816), 3× I²C (Fast Mode Plus), 3× SPI, USB 2.0 FS, UCPD, SAI |
| Analog Peripherals | 4× ultra-fast rail-to-rail comparators, 3× op-amps (PGA mode, all pins accessible), VREFBUF (2.048/2.5/2.9 V outputs) |
| Math Accelerators | CORDIC (trigonometric/hyperbolic functions), FMAC (filtering operations), CRC unit, true RNG |
Pinout & Package
LQFP48 (7 × 7 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant, industrial temperature range (–40 °C to +85 °C).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA | Power supply inputs | Core/analog supply: 1.71–3.6 V; VDDA must be ≥ VDD and stable before VDD ramp-up |
| VSS, VSSA | Ground references | Digital/analog ground planes; separate routing recommended for noise-sensitive analog circuits |
| PA0–PA15, PB0–PB15, PC13–PC15 | General-purpose I/Os | Up to 38 fast I/Os; most 5 V tolerant, mappable to EXTI lines, support multiple alternate functions |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7, PB0, PB1, PB10, PB11 | Analog input channels | Connect directly to ADC1/ADC2 INx pins; require proper decoupling and layout per AN4073 |
| PA4, PA5, PA6, PA7, PB0, PB1 | DAC output channels | PA4/PA5 = DAC1/2 external buffered outputs; PA6/PA7/PB0/PB1 = internal unbuffered DAC outputs |
| PA13, PA14, PA15 | SWD debug interface | SWDIO, SWCLK, NRST - enable serial wire debug without JTAG overhead; NRST supports reset injection |
Key Features
| Feature | Design Value |
|---|---|
| ART Accelerator | Enables 0-wait-state execution from Flash at full 170 MHz, eliminating cache-related timing jitter in deterministic control loops |
| CORDIC + FMAC | Hardware-accelerated trigonometric (sin/cos/tan) and filtering (FIR/IIR) operations reduce CPU load by >70% vs. software implementation |
| VREFBUF | On-chip 2.048 V / 2.5 V / 2.9 V reference with ±0.5% accuracy over temperature, eliminating external reference ICs in precision ADC/DAC designs |
| Advanced Timers (TIM1/TIM8) | 8-channel PWM generation with programmable dead-time insertion, emergency stop, and quadrature encoder input for BLDC/PMSM motor control |
| FDCAN Interface | Supports CAN FD up to 5 Mbit/s data phase, enabling high-bandwidth diagnostics and firmware updates in automotive and industrial networks |
| UCPD Controller | Integrated USB Type-C™ Power Delivery controller with CC logic, enabling compact, single-chip USB-C port management without external PD PHY |
Applications
| Motor Control System | Digital Power Supply |
|---|---|
Use Scenario: Closed-loop field-oriented control (FOC) of 3-phase BLDC motors in HVAC blowers and industrial pumps. IC Role / Device Role / Timing Role: Primary controller executing FOC algorithm, PWM generation, current sensing, and protection logic with sub-microsecond interrupt latency. Use Value: Dual 16-bit ADCs sample phase currents simultaneously; TIM1/TIM8 provide synchronized 8-channel PWM with hardware dead-time; CORDIC computes Clarke/Park transforms in <100 ns. |
Use Scenario: Digitally controlled AC-DC SMPS with active PFC and LLC resonant stages in telecom rectifiers. IC Role / Device Role / Timing Role: Real-time voltage/current regulation engine managing dual-loop feedback, soft-start, and fault response within 2 µs. Use Value: FMAC accelerates digital PID and adaptive filter calculations; 12-bit DACs drive gate drivers; VREFBUF ensures ±0.1% reference stability for 16-bit ADC measurements. |
| Industrial Sensor Hub | USB-C Power Delivery Endpoint |
Use Scenario: Multi-sensor node aggregating temperature, pressure, and vibration data for predictive maintenance in factory automation. IC Role / Device Role / Timing Role: Signal conditioning and preprocessing unit converting analog sensor outputs to digital streams before transmission via UART or USB. Use Value: 3 op-amps condition low-level bridge sensor signals; internal temperature sensor and VREFINT enable self-calibration; 14-bit effective ADC resolution via oversampling. |
Use Scenario: USB-C powered monitor or docking station requiring dynamic power negotiation up to 100 W. IC Role / Device Role / Timing Role: UCPD controller managing CC line communication, policy engine, and VBUS switching under USB PD 3.0 specification. Use Value: Integrated UCPD peripheral eliminates need for external PD controller; hardware CRC and secure boot support prevent malicious firmware injection during updates. |
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), reduced I/O count (26 GPIO), same core/peripherals but no UCPD or SAI | Suitable for space-constrained cost-sensitive motor drives without USB-C or audio interfaces | Select when board area is critical and UCPD/SAI are unused; retains identical Flash/SRAM and analog features |
| STM32G474RET6 | LQFP64 package, 512 KB Flash, 128 KB SRAM, additional crypto accelerator (AES/SHA/RNG), no UCPD | Targeted at secure firmware update and encrypted communications in IoT edge nodes | Choose when extended memory, cryptographic services, or more timers/GPIOs are required; not drop-in due to pinout and feature set expansion |
Compared with STM32G431C8T3, the K8T6 offers footprint reduction at the cost of interface count, while the G474RET6 trades UCPD capability for cryptographic acceleration and memory headroom-making the C8T3 optimal for USB-C-integrated digital power and motor control where balanced analog density and compact LQFP48 packaging are essential.
Availability
STM32G431C8T3 is available at Aetrix Electronics and suitable for digital power supplies, motor control systems, industrial sensor hubs, and USB-C power delivery endpoints requiring stable component supply across production lifecycles.
Supply support for STM32G431C8T3 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 devices 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 USB-C PD endpoint functionality with hardware math acceleration and robust real-time determinism.
FAQ
What is the maximum operating frequency and associated performance metric of the STM32G431C8T3?
The STM32G431C8T3 operates at up to 170 MHz with an integer performance rating of 213 DMIPS (Dhrystone MIPS), achieved using the ART Accelerator for zero-wait-state Flash execution. Its Cortex-M4 core includes a single-precision FPU and DSP instruction set, enabling efficient floating-point math and signal processing in real-time control applications.
Does the STM32G431C8T3 support hardware-based cryptographic functions?
No-the STM32G431C8T3 does not integrate dedicated cryptographic accelerators (e.g., AES, SHA, PKA). It includes a true random number generator (RNG) and CRC calculation unit, but encryption/decryption must be implemented in software or offloaded to external ICs. For hardware crypto, consider the STM32G474 or STM32L5 series.
How many analog-to-digital converter (ADC) instances does the STM32G431C8T3 contain, and what are their key specifications?
The device integrates two independent 16-bit ADCs (ADC1 and ADC2), each supporting up to 19 external channels and 4 internal channels (temperature sensor, VREFINT, etc.). Conversion time is 0.25 µs at maximum resolution, with hardware oversampling enabling up to 16-bit effective resolution. Both ADCs support simultaneous sampling and injected/conversion modes.
Is the STM32G431C8T3 pin-compatible with other members of the STM32G431 family?
Yes-within the same package variant. The STM32G431C8T3 (LQFP48) shares identical pinout and electrical characteristics with other LQFP48 variants like STM32G431CBT6 and STM32G431R8T6. However, it is not pin-compatible with LQFP32, UFQFPN48, or WLCSP49 variants due to differing pin counts and assignments.
STM32G431C8T3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM32G4
- Packaging:
- Tray
- 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:
- 38
- 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 17x12b SAR; D/A 4x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32G431C8T3 FAQ
1.How can I place an order for STM32G431C8T3 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32G431C8T3 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 STM32G431C8T3 reliable?
The price and inventory of STM32G431C8T3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G431C8T3 is usually 5 days.
3.What payment methods are accepted for STM32G431C8T3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G431C8T3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32G431C8T3?
STM32G431C8T3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32G431C8T3 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 STM32G431C8T3?
For technical support, including STM32G431C8T3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G431C8T3 requirements.
6.How does Aetrix verify that STM32G431C8T3 is sourced from the original manufacturer or authorized distributors?
All STM32G431C8T3 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 STM32G431C8T3 meets industry standards.
7.What is the process for return or replacement of STM32G431C8T3?
All STM32G431C8T3 units undergo pre-shipment inspection (PSI). If there is an issue with STM32G431C8T3, 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 STM32G431C8T3 part is unused and in its original packaging.
Return procedure for STM32G431C8T3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32G431C8T3 Tags
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