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STMicroelectronics STM32G431CBT6
- Part No.:
- STM32G431CBT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32G431CBT6.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,834
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Product details
Overview
STM32G431CBT6 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 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 sensing systems.
For engineers reviewing the STM32G431CBT6 datasheet, STM32G431CBT6 pinout, STM32G431CBT6 application, or STM32G431CBT6 equivalent, key selection considerations include its LQFP48 package, 5 V-tolerant I/Os, FDCAN support, UCPD interface for USB Type-C™ PD, and hardware-accelerated trigonometric/filter math for real-time control loops.
Technical Context
The STM32G431CBT6 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 ECC and PCROP, 22 KB SRAM with parity on first 16 KB, and 10 KB CCM SRAM with parity - all accessible via multi-AHB interconnect matrix.
Analog integration centers on two independent 12-bit ADCs (up to 23 channels, hardware oversampling), four ultra-fast comparators, three op-amps configurable as programmable gain amplifiers (PGA), and dedicated CORDIC/FMAC accelerators for real-time computation of sine/cosine, magnitude/phase, and FIR/IIR filtering - eliminating CPU load in closed-loop control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 170 MHz max frequency → enables deterministic 213 DMIPS real-time processing for servo/motor control. |
| Memory | 128 KB Flash (ECC, PCROP), 22 KB SRAM + 10 KB CCM SRAM (parity-checked) → supports secure firmware storage and low-latency data buffering. |
| Analog Peripherals | Dual 12-bit ADCs (0.25 µs, 23 ch), 4x comparators, 3x op-amps (PGA mode), 4x DAC channels → enables full analog signal chain integration for sensor conditioning and actuator drive. |
| Math Acceleration | CORDIC (trig/log/exp), FMAC (filtering) → offloads >90% of compute-intensive math from CPU, reducing jitter in control loops. |
| Communication | FDCAN (flexible data-rate), 4x USART, 3x SPI, 3x I²C, USB FS, UCPD, SAI → supports industrial fieldbus, USB-C PD negotiation, and audio/sensor data streaming. |
| Timers | 14 timers including 2x advanced motor-control timers (TIM1/TIM8) with dead-time generation, emergency stop, and 8x PWM outputs → directly drives 3-phase inverters with precise timing. |
| Package & I/O | LQFP48 (7 × 7 mm), up to 38 GPIOs (5 V tolerant) → fits compact industrial PCBs while interfacing with legacy 5 V logic and sensors. |
Pinout & Package
LQFP48 (7 × 7 mm, 0.5 mm pitch) surface-mount package with exposed thermal pad; RoHS-compliant, industrial temperature range (–40 °C to +85 °C).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA | Core & analog supply | 1.71–3.6 V operation; separate analog domain ensures stable reference for ADC/DAC/OPAMP. |
| VSS, VSSA | Digital & analog ground | Independent grounding minimizes noise coupling into sensitive analog circuits. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD2 | General-purpose I/O | Up to 38 pins mappable to interrupts; multiple 5 V-tolerant ports enable direct connection to industrial sensors and logic. |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7, PB0, PB1, PB10, PB11, PC0–PC5, PC10–PC15 | ADC input channels | 23-channel multiplexed analog inputs supporting simultaneous sampling across dual ADCs. |
| PA4, PA5, PA6, PA7 | DAC output channels | 2 buffered external DACs (1 MSPS) and 2 unbuffered internal DACs (15 MSPS) for precision waveform generation or feedback control. |
| PA8–PA15, PB0–PB15, PC6–PC7, PD0–PD2 | Timer channel outputs | Supports complementary PWM with dead-time insertion (TIM1/TIM8) for 3-phase motor gate drivers. |
| PA11, PA12, PB9, PB12, PB13, PB14, PB15 | USB/UCPD interface | Integrated USB 2.0 FS PHY and UCPD controller enable native USB-C PD negotiation without external transceivers. |
Key Features
| Feature | Design Value |
|---|---|
| CORDIC accelerator | Hardware computation of sin/cos/tan/atan/sqrt/log/exp in ≤10 cycles → eliminates floating-point library overhead in motion control. |
| FMAC unit | Single-cycle MAC operations on 32-bit data → enables real-time FIR/IIR filtering at >1 MSPS sample rates for EMI suppression. |
| Advanced motor timers (TIM1/TIM8) | 8-channel PWM with programmable dead time, fault protection, and emergency stop → meets IEC 60730 Class B functional safety requirements. |
| Internal voltage reference buffer (VREFBUF) | Three selectable outputs (2.048 V, 2.5 V, 2.9 V) with ±0.5% accuracy → provides stable reference for ADC/DAC without external components. |
| FDCAN controller | Flexible Data-Rate (up to 5 Mbit/s) with ISO 11898-1 compliance → supports modern automotive and industrial CAN FD networks. |
| UCPD interface | Native USB Type-C™ Power Delivery negotiation (v3.0) with Rp/Rd detection → enables bidirectional power control in portable and docking systems. |
Applications
| Industrial Motor Control | Digital Power Supply |
|---|---|
Use Scenario: Closed-loop field-oriented control (FOC) of BLDC/PMSM motors in HVAC compressors and pumps. IC Role / Device Role / Timing Role: Main system controller executing FOC algorithm, generating 6-channel PWM with <100 ns dead-time precision, and sampling current/voltage via dual synchronized ADCs. Use Value: CORDIC/FMAC acceleration reduces CPU load by 65%, enabling 20 kHz PWM switching while maintaining 50 µs current loop update time. |
Use Scenario: Digital AC-DC and DC-DC converters with adaptive voltage regulation and communication telemetry. IC Role / Device Role / Timing Role: Primary digital controller managing PID voltage/current loops, monitoring thermal/fault conditions, and reporting via I²C/USB. Use Value: Integrated 12-bit DACs generate precise reference voltages for error amplifiers; FDCAN enables interoperability with smart grid infrastructure. |
| USB-C Power Delivery Hub | Industrial Sensor Node |
Use Scenario: Multi-port USB-C PD hub negotiating power contracts up to 100 W per port with dynamic role swapping. IC Role / Device Role / Timing Role: UCPD controller handling BMC physical layer, PD protocol stack, and VBUS/VCONN switching logic. Use Value: On-chip UCPD eliminates need for external PD controllers; embedded Flash stores vendor-defined policy engine and certification keys. |
Use Scenario: Battery-powered condition-monitoring node measuring vibration, temperature, and pressure in predictive maintenance systems. IC Role / Device Role / Timing Role: Low-power system-on-chip acquiring analog sensor data, performing FFT via CORDIC/FMAC, and transmitting over LPUART/USB. Use Value: Shutdown mode consumes 0.25 µA; RTC with alarm enables scheduled wake-up every 10 seconds for burst measurement, extending battery life to >5 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32G431KBT6 | LQFP32 package (32-pin), reduced I/O count (26 GPIOs), same core/peripherals but no UCPD or SAI | Suitable for space-constrained cost-sensitive designs where USB-C PD or audio is not required | Select when board area is critical and peripheral count can be reduced without sacrificing core control capability. |
| STM32G474RET6 | LQFP64 package, 512 KB Flash, 128 KB SRAM, additional crypto accelerators (AES/RNG/SHA), no UCPD | Targeted at secure firmware updates and encrypted communications in IoT gateways | Choose when extended memory, cryptographic services, or higher analog channel count (36 ADC) are required over USB-C PD functionality. |
Compared with STM32G431KBT6, the STM32G431CBT6 adds UCPD and SAI in LQFP48 - essential for USB-C PD hubs and audio-enabled edge nodes; versus STM32G474RET6, it trades memory/crypto for integrated power delivery control and smaller footprint, optimizing for cost-sensitive industrial power electronics.
Availability
STM32G431CBT6 is available at Aetrix Electronics and suitable for industrial motor control, digital power conversion, USB-C PD systems, and battery-powered sensor nodes requiring stable component supply across long production lifecycles.
Supply support for STM32G431CBT6 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 ICs, sensors, and analog devices for industrial, automotive, and consumer markets.
The STM32G4 series targets high-performance, cost-sensitive real-time control applications - combining Cortex-M4 computational power with rich analog integration and hardware math acceleration to replace discrete signal-chain components in motor drives and power supplies.
FAQ
What is the maximum operating frequency and associated performance metric of the STM32G431CBT6?
The STM32G431CBT6 operates at up to 170 MHz with an Adaptive Real-Time (ART) accelerator enabling zero-wait-state execution from Flash memory. Its performance is rated at 213 DMIPS (Dhrystone 2.1), verified under full-speed operation with cache enabled and prefetch disabled - a benchmark reflecting deterministic real-time throughput for control algorithms.
Does the STM32G431CBT6 support USB Type-C™ Power Delivery, and what interfaces are required?
Yes, the STM32G431CBT6 integrates a dedicated USB Type-C™ Power Delivery (UCPD) controller compliant with USB PD 3.0. It requires only external Rp/Rd resistors and VBUS/VCONN switches - no external PD PHY or protocol IC is needed. The UCPD interface uses dedicated pins (PB9, PB12–PB15) and supports BMC physical layer signaling, policy engine execution, and role swapping.
How many analog-to-digital converter (ADC) channels does the STM32G431CBT6 support, and what is their resolution and speed?
The STM32G431CBT6 features two independent 12-bit ADCs supporting up to 23 total input channels (multiplexed across GPIOs). Each ADC achieves 0.25 µs conversion time (4 MSPS), with hardware oversampling up to 16-bit effective resolution. Both ADCs support simultaneous sampling and injected/conversion modes - critical for three-phase current sensing in motor control.
What hardware math acceleration units are included, and how do they improve real-time control performance?
The STM32G431CBT6 includes two dedicated hardware accelerators: CORDIC (for trigonometric, hyperbolic, and logarithmic functions) and FMAC (a filter mathematical accelerator supporting single-cycle MAC operations). These units execute complex computations in ≤10 cycles - reducing CPU load by up to 65% in FOC motor control and enabling deterministic 50 µs current loop updates at 20 kHz PWM switching frequencies.
STM32G431CBT6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM32G4
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4F
- 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:
- 38
- 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 17x12b; D/A 4x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32G431CBT6 FAQ
1.How can I place an order for STM32G431CBT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32G431CBT6 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 STM32G431CBT6 reliable?
The price and inventory of STM32G431CBT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G431CBT6 is usually 5 days.
3.What payment methods are accepted for STM32G431CBT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G431CBT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32G431CBT6?
STM32G431CBT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32G431CBT6 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 STM32G431CBT6?
For technical support, including STM32G431CBT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G431CBT6 requirements.
6.How does Aetrix verify that STM32G431CBT6 is sourced from the original manufacturer or authorized distributors?
All STM32G431CBT6 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 STM32G431CBT6 meets industry standards.
7.What is the process for return or replacement of STM32G431CBT6?
All STM32G431CBT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32G431CBT6, 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 STM32G431CBT6 part is unused and in its original packaging.
Return procedure for STM32G431CBT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32G431CBT6 Tags
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