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STMicroelectronics STM32G431RBT6U
- Part No.:
- STM32G431RBT6U
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32G431RBT6U.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,386
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Product details
Overview
STM32G431RBT6U 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), three rail-to-rail op-amps, and CORDIC/FMAC math accelerators - deployed in motor control, digital power conversion, and industrial sensing systems.
For engineers reviewing the STM32G431RBT6U datasheet, STM32G431RBT6U pinout, STM32G431RBT6U application, or STM32G431RBT6U equivalent, key selection criteria include FDCAN support for automotive-grade communication, 5 V-tolerant I/Os for mixed-voltage interfacing, hardware-accelerated trigonometric filtering for real-time control loops, and UCPD interface for USB Type-C™ power delivery implementation.
Technical Context
The STM32G431RBT6U implements a dual-bank Flash architecture with PCROP and securable memory zones, paired with an Adaptive Real-Time (ART) Accelerator enabling zero-wait-state execution at 170 MHz. Its interconnect matrix routes 14 timers-including two 16-bit advanced motor-control timers with dead-time generation and emergency stop-across multiple bus domains.
Analog subsystem integration includes four ultra-fast comparators, internal VREFBUF (2.048 V / 2.5 V / 2.9 V outputs), and op-amps configurable in programmable-gain amplifier (PGA) mode with all terminals accessible - supporting closed-loop current/voltage sensing without external signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU and DSP instructions, enabling single-cycle MAC and floating-point control algorithms |
| Max Clock Frequency | 170 MHz with 213 DMIPS, sustained via ART Accelerator eliminating Flash wait states |
| Memory | 128 KB Flash (ECC-protected, PCROP-enabled), 22 KB SRAM + 10 KB CCM SRAM (parity-checked) |
| Analog Peripherals | Dual 12-bit DACs (2 buffered/external @ 1 MSPS, 2 unbuffered/internal @ 15 MSPS), dual 12-bit ADCs (23-channel, 0.25 µs conversion) |
| Timers | 14 timers: 2x advanced motor-control (TIM1/TIM8), 1x 32-bit general-purpose, 7x 16-bit general/basic, 2x watchdogs, 1x SysTick, 1x LPTIM |
| Communication | FDCAN (flexible data-rate), 4x USART/UART (LIN/IrDA/ISO7816), 3x I²C (Fast Mode Plus), 3x SPI (I²S multiplexed), USB 2.0 FS, UCPD |
| Math Acceleration | CORDIC engine for sin/cos/tan/sqrt/log acceleration; FMAC for FIR/IIR filter coefficient computation |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant, industrial temperature range (–40 °C to +85 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA | Core & analog supply | 1.71–3.6 V operation; separate analog domain enables noise-isolated precision measurements |
| VSS, VSSA | Digital & analog ground | Independent grounding paths reduce coupling between digital switching and analog signal chains |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15 | General-purpose I/O | Up to 51 GPIOs; most support 5 V tolerance, external interrupts, and remappable alternate functions |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7 | ADC1_IN1–IN7 | Direct connection to 12-bit ADC1 inputs; supports hardware oversampling up to 16-bit effective resolution |
| PA4, PA5 | DAC1_OUT1, DAC1_OUT2 | Buffered analog outputs capable of driving 1 kΩ loads at 1 MSPS with monotonicity guaranteed |
| PA8, PA11, PA12 | MCO, USB_DM, USB_DP | USB 2.0 full-speed physical layer interface with built-in transceivers and LPM/BCD support |
| PA11, PA12, PB13, PB14 | UCPD1_CC1, UCPD1_CC2, UCPD1_DB, UCPD1_VCONN | Dedicated pins for USB Type-C™ configuration channel and VCONN power management |
| NRST | Active-low reset | Asynchronous reset input with internal pull-up; compatible with external reset supervisors and push-button recovery |
Key Features
| Feature | Design Value |
|---|---|
| CORDIC accelerator | Hardware trigonometric/logarithmic computation in <100 ns per operation, offloading CPU for real-time motion control |
| FMAC unit | 16×16-bit MAC with 32-bit accumulator; executes 16-tap FIR filters in single cycle, enabling high-bandwidth digital power control |
| Op-amp PGA mode | Three rail-to-rail op-amps with gain programmable from 1× to 40×, all pins accessible for external feedback and compensation |
| VREFBUF output options | Internally selectable 2.048 V / 2.5 V / 2.9 V reference voltages, reducing need for external precision references in ADC/DAC applications |
| FDCAN controller | Supports CAN FD frames up to 5 Mbps, with time-triggered communication and error confinement for functional safety designs |
Applications
| Motor Control | 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 PWM generation, current sensing via dual ADCs, and torque loop computation using CORDIC/FMAC. Use Value: Sub-microsecond ADC sampling synchronized with PWM edges enables precise current reconstruction and ripple reduction. | Use Scenario: Isolated AC/DC and DC/DC converters with adaptive voltage regulation and fault protection. IC Role / Device Role / Timing Role: High-speed voltage/current monitoring, digital PID execution, and isolated gate driver timing via advanced timers. Use Value: 15 MSPS unbuffered DAC channels generate fast-compensation waveforms for adaptive loop bandwidth tuning. |
| USB Type-C™ PD Sink | Industrial Sensor Hub |
Use Scenario: Smart charging accessories negotiating power contracts up to 100 W using USB PD 3.0 with PPS. IC Role / Device Role / Timing Role: UCPD PHY + protocol stack execution, CC line monitoring, VCONN switching, and power path control. Use Value: Integrated UCPD peripheral eliminates external transceiver IC, reducing BOM count and PCB area by >30%. | Use Scenario: Multi-sensor node aggregating temperature, pressure, and analog sensor data for predictive maintenance. IC Role / Device Role / Timing Role: Simultaneous multi-channel ADC acquisition, on-chip temperature compensation, and secure OTA firmware updates. Use Value: Hardware parity on SRAM and ECC on Flash ensure data integrity during long-term unattended operation in harsh environments. |
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 FDCAN | Suitable for space-constrained cost-sensitive designs without USB-C or CAN requirements | Select when board layout area is critical and advanced interfaces are unnecessary |
| STM32G474RET6 | LQFP64 package, 512 KB Flash, 128 KB SRAM, additional crypto accelerators and SAI audio interface | Targeted at higher-end motor drives and audio-enabled HMI systems requiring larger code footprint | Choose when extended memory, AES/SHA engines, or stereo audio I/O are required |
Compared with STM32G431KBT6, the STM32G431RBT6U adds FDCAN and UCPD while retaining identical analog performance; versus STM32G474RET6, it trades memory and crypto features for lower cost and power, making it optimal for mid-tier real-time control where interface richness matters more than raw capacity.
Availability
STM32G431RBT6U is available at Aetrix Electronics and suitable for motor control, digital power conversion, USB Type-C™ PD sink implementations, and industrial sensor hubs requiring stable component supply across production lifecycles.
Supply support for STM32G431RBT6U 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 real-time control applications, integrating math accelerators, rich analog front-ends, and USB-C/Power Delivery interfaces to simplify design of smart power and motion systems.
FAQ
What is the maximum operating frequency and how is it achieved?
The STM32G431RBT6U achieves 170 MHz maximum CPU frequency using the Adaptive Real-Time (ART) Accelerator, which caches Flash accesses to eliminate wait states. This allows deterministic 213 DMIPS performance even with code executing directly from Flash memory, verified under 1.71–3.6 V supply conditions and industrial temperature range.
Does this MCU support USB Type-C™ power delivery negotiation?
Yes - the STM32G431RBT6U integrates a dedicated USB Type-C™ and Power Delivery (UCPD) controller with hardware support for CC line monitoring, VCONN switching, and PD message handling. It complies with USB PD 3.0 specification and supports Programmable Power Supply (PPS) profiles up to 100 W.
How many analog-to-digital converter channels does it have, and what is their resolution?
The device integrates two independent 12-bit ADCs with up to 23 total input channels (including internal sensors). Each supports hardware oversampling to achieve up to 16-bit effective resolution, with 0.25 µs conversion time and 0–3.6 V input range - calibrated at factory and supported by internal VREFBUF outputs.
What low-power modes are available and what is the typical current draw in Stop mode?
Five low-power modes are supported: Sleep, Low-power Sleep, Stop 0, Stop 1, and Standby. In Stop 1 mode (Flash powered down, RTC and backup registers active), typical current consumption is 1.2 µA at 25 °C - measured with VDD = 3.3 V, all clocks gated except LSE, and no I/O leakage.
STM32G431RBT6U Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-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:
- 52
- 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 23x12b; D/A 4x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32G431RBT6U FAQ
1.How can I place an order for STM32G431RBT6U through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32G431RBT6U 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 STM32G431RBT6U reliable?
The price and inventory of STM32G431RBT6U are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G431RBT6U is usually 5 days.
3.What payment methods are accepted for STM32G431RBT6U?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G431RBT6U transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32G431RBT6U?
STM32G431RBT6U orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32G431RBT6U 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 STM32G431RBT6U?
For technical support, including STM32G431RBT6U datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G431RBT6U requirements.
6.How does Aetrix verify that STM32G431RBT6U is sourced from the original manufacturer or authorized distributors?
All STM32G431RBT6U 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 STM32G431RBT6U meets industry standards.
7.What is the process for return or replacement of STM32G431RBT6U?
All STM32G431RBT6U units undergo pre-shipment inspection (PSI). If there is an issue with STM32G431RBT6U, 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 STM32G431RBT6U part is unused and in its original packaging.
Return procedure for STM32G431RBT6U:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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