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STMicroelectronics STM32G431CBT6TR
- Part No.:
- STM32G431CBT6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32G431CBT6TR.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
STM32G431CBT6TR 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, three op-amps, and CORDIC/FMAC math accelerators - deployed in motor control, digital power conversion, and industrial sensing systems.
For engineers reviewing the STM32G431CBT6TR datasheet, STM32G431CBT6TR pinout, STM32G431CBT6TR application, or STM32G431CBT6TR equivalent, key selection criteria include its 48-pin UFQFPN package, FDCAN support, 5 V-tolerant I/Os, hardware parity on SRAM, and USB Type-C™/UCPD controller for embedded power delivery interfaces.
Technical Context
The STM32G431CBT6TR implements an 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 hardware parity on first 16 KB, and 10 KB CCM SRAM with parity - all supporting deterministic real-time operation.
Analog integration centers on two independent 12-bit ADCs (up to 23 channels, 0.25 µs), four ultra-fast comparators, three fully accessible op-amps (configurable as PGAs), and a programmable voltage reference buffer (2.048 V / 2.5 V / 2.9 V). Digital acceleration includes dedicated CORDIC and FMAC units for trigonometric and filtering computations without CPU load.
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 with parity); 10 KB CCM SRAM (parity-enabled) |
| Analog Peripherals | 2 × 12-bit ADCs (0.25 µs, up to 23 ch); 4 × comparators; 3 × op-amps; 4 × 12-bit DACs (2 buffered @ 1 MSPS, 2 unbuffered @ 15 MSPS) |
| Math Acceleration | CORDIC unit for sin/cos/tan/sqrt/log; FMAC for FIR/IIR filter computation offloading |
| Communication | FDCAN (flexible data-rate); 4 × USART/UART (LIN/IrDA/ISO7816); 3 × I²C (Fast Mode Plus, 1 Mbit/s); USB 2.0 FS + UCPD |
| Timers & Control | 14 timers including 2 × advanced motor-control timers (TIM1/TIM8), LPTIM1, RTC with alarm/wakeup |
| Supply & Power | 1.71–3.6 V operation; POR/PDR/BOR; PVD; sleep/stop/standby/shutdown modes; VBAT for RTC/backup registers |
Pinout & Package
STM32G431CBT6TR uses a 48-pin UFQFPN (7 × 7 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined per ST's DS12589 Rev 6, Section 4.3 (UFQFPN48 pinout description) and Table 12 (pin definition).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA | Core & analog supply | 1.71–3.6 V input; separate analog domain for precision ADC/DAC operation |
| VSS, VSSA | Digital & analog ground | Independent grounding reduces noise coupling into analog circuits |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15 | General-purpose I/O | Up to 86 fast I/Os; multiple pins 5 V tolerant; all mappable to external interrupts |
| NRST | Active-low reset | Hardware reset input with internal pull-up; supports low-power wakeup via EXTI |
| BOOT0 | Boot mode selection | High at power-on selects system memory bootloader; controlled during reset sequence |
| PA11/PA12 | USB D+/D− | Dedicated full-speed USB 2.0 interface with LPM and BCD support |
| PA15/PB3/PB4 | JTAG/SWD debug | Serial Wire Debug (SWD) interface; SWCLK/SWDIO/NRST required for programming and trace |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Real-Time Accelerator (ART) | Enables 0-wait-state execution from Flash at 170 MHz, eliminating cache misses in deterministic code paths |
| CORDIC & FMAC hardware accelerators | Offloads trigonometric and filtering computations from CPU, reducing latency and power in motor control loops |
| Programmable voltage reference buffer (VREFBUF) | Provides stable 2.048 V / 2.5 V / 2.9 V references for ADC/DAC calibration and sensor excitation |
| Advanced motor-control timers (TIM1/TIM8) | Support dead-time generation, emergency stop, and up to 8 PWM channels - essential for 3-phase inverter gate driving |
| FDCAN with flexible data-rate | Enables high-bandwidth CAN FD communication (up to 5 Mbit/s) for real-time industrial networking |
| USB Type-C™ / UCPD controller | Integrates USB Power Delivery negotiation logic and CC line monitoring - eliminates need for external UCPD IC |
Applications
| Industrial Motor Control | Digital Power Supply |
|---|---|
Use Scenario: Closed-loop field-oriented control (FOC) of BLDC/PMSM motors in HVAC compressors and industrial drives. IC Role / Device Role / Timing Role: Main system controller executing FOC algorithm, managing PWM generation, ADC sampling, and fault protection timing. Use Value: CORDIC/FMAC accelerators reduce CPU load by >40% in real-time torque calculation; advanced timers enable precise 100 ns dead-time control. | Use Scenario: Digitally controlled AC-DC and DC-DC converters with adaptive voltage regulation and communication telemetry. IC Role / Device Role / Timing Role: Primary digital power controller handling PID loop execution, ADC-based current/voltage feedback, and isolated communication. Use Value: Dual 12-bit ADCs sample voltage/current simultaneously at 0.25 µs; hardware oversampling achieves effective 14-bit resolution for tight regulation. |
| Smart Sensor Hub | USB-C Power Delivery Endpoint |
Use Scenario: Multi-sensor fusion node aggregating temperature, pressure, and IMU data for predictive maintenance in factory equipment. IC Role / Device Role / Timing Role: Sensor interface aggregator with timestamped data acquisition, local preprocessing, and secure wireless upload. Use Value: Integrated op-amps condition analog sensor outputs; RTC with alarm enables scheduled low-power wakeups for battery-efficient polling. | Use Scenario: USB-C powered peripheral (e.g., docking station, monitor) requiring dynamic power role negotiation and VBUS control. IC Role / Device Role / Timing Role: UCPD controller managing CC line signaling, PD message parsing, and VBUS switch control per USB PD 3.0 spec. Use Value: On-chip UCPD eliminates external transceiver; hardware CRC and message buffering ensure robust, low-latency PD negotiation. |
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 (25 vs. 38), same core/peripherals but no UCPD or SAI | Suitable for space-constrained cost-sensitive designs without USB-C PD or audio interface needs | Select when board area and BOM count are prioritized over UCPD and expanded analog I/O |
| STM32G474RET6 | LQFP64 package, 512 KB Flash, 128 KB SRAM, additional ADC/DAC channels, no UCPD but adds SAI and more timers | Targeted at higher-complexity motor control and audio processing where Flash headroom and peripheral density matter | Choose for designs needing >128 KB Flash, extra analog channels, or SAI audio streaming capability |
Compared with STM32G431KBT6, the STM32G431CBT6TR offers 13 more GPIOs, UCPD, and SAI - critical for USB-C PD endpoints and sensor-rich edge nodes; versus STM32G474RET6, it trades Flash/SRAM capacity for lower cost and smaller footprint while retaining core math acceleration and FDCAN.
Availability
STM32G431CBT6TR is available at Aetrix Electronics and suitable for industrial motor control, digital power conversion, smart sensor hubs, and USB-C power delivery endpoints requiring stable component supply across production lifecycles.
Supply support for STM32G431CBT6TR 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-efficiency digital power, motor control, and real-time signal processing - combining Cortex-M4 performance with ST's patented analog integration and hardware math acceleration.
FAQ
What is the maximum operating frequency and corresponding performance metric of the STM32G431CBT6TR?
The STM32G431CBT6TR 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 and fixed-point signal processing in real-time applications such as motor control and digital power conversion.
Does the STM32G431CBT6TR support USB Power Delivery (PD) negotiation natively?
Yes - the STM32G431CBT6TR integrates a dedicated USB Type-C™ / USB Power Delivery (UCPD) controller compliant with USB PD 3.0. It handles CC line monitoring, PD message framing, CRC validation, and VBUS switch control without external components. This enables compact, cost-effective USB-C PD endpoints like docks, monitors, and portable chargers.
How many analog-to-digital converter (ADC) channels does the STM32G431CBT6TR support, and what is their speed?
The device integrates two independent 12-bit ADCs capable of up to 23 total channels (including internal sensors). Each ADC achieves 0.25 µs conversion time (4 MSPS), with hardware oversampling supporting effective resolutions up to 16 bits. Both ADCs operate concurrently with synchronized sampling - critical for vector control in motor drives and multi-channel power monitoring.
What low-power modes are available, and what is the typical current consumption in Stop 0 mode?
The STM32G431CBT6TR supports Sleep, Stop 0, Stop 1, Standby, and Shutdown modes. In Stop 0 mode (with Flash powered down and SRAM retention), typical current consumption is 1.2 µA at 25 °C (VDD = 3.3 V), as specified in DS12589 Rev 6, Table 30. Real-time clock and backup registers remain active, enabling periodic wakeups via RTC alarm or external interrupt.
STM32G431CBT6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM32G4
- Packaging:
- Tape & Reel (TR)
- 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:
- 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 SAR; D/A 4x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32G431CBT6TR FAQ
1.How can I place an order for STM32G431CBT6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32G431CBT6TR 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 STM32G431CBT6TR reliable?
The price and inventory of STM32G431CBT6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G431CBT6TR is usually 5 days.
3.What payment methods are accepted for STM32G431CBT6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G431CBT6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32G431CBT6TR?
STM32G431CBT6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32G431CBT6TR 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 STM32G431CBT6TR?
For technical support, including STM32G431CBT6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G431CBT6TR requirements.
6.How does Aetrix verify that STM32G431CBT6TR is sourced from the original manufacturer or authorized distributors?
All STM32G431CBT6TR 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 STM32G431CBT6TR meets industry standards.
7.What is the process for return or replacement of STM32G431CBT6TR?
All STM32G431CBT6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32G431CBT6TR, 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 STM32G431CBT6TR part is unused and in its original packaging.
Return procedure for STM32G431CBT6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32G431CBT6TR Tags
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