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Home > Products > Integrated Circuits (ICs) > Embedded > Microcontrollers

STMicroelectronics STM32G431VBT6

Name: STM32G431VBT6
Brand: STMicroelectronics
SKU: STM32G431VBT6
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STM32G431VBT6

Manufacturer:: STMicroelectronics

Category:: Microcontrollers

Package:: 100-LQFP

Datasheet:: STM32G431VBT6.pdf

Description:: IC MCU 32BIT 128KB FLASH 100LQFP

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Product details

Overview

STM32G431VBT6 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 rail-to-rail comparators, and 3 operational amplifiers. It targets motor control, digital power conversion, and industrial sensing systems requiring real-time math acceleration via CORDIC and FMAC.

For engineers reviewing the STM32G431VBT6 datasheet, STM32G431VBT6 pinout, STM32G431VBT6 application, or STM32G431VBT6 equivalent, key selection criteria include its LQFP100 package, FDCAN support, USB Type-C™/PD controller (UCPD), low-power timer (LPTIM1), and hardware parity on critical SRAM blocks.

Technical Context

The STM32G431VBT6 implements a tightly coupled 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 main SRAM with hardware parity on first 16 KB, and 10 KB CCM SRAM with parity-optimized for deterministic real-time code/data access.

Analog integration centers on two independent 16-bit ADCs (up to 23 channels, 0–3.6 V range, hardware oversampling), four ultra-fast comparators, three op-amps configurable in PGA mode with all terminals accessible, and a programmable voltage reference buffer (VREFBUF) supporting 2.048 V, 2.5 V, and 2.9 V outputs.

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	Arm Cortex-M4 with FPU and DSP instructions, enabling floating-point math and signal processing without software emulation.
Max Clock Frequency	170 MHz with 213 DMIPS - supports high-speed closed-loop control in motor drives and digital power supplies.
Flash Memory	128 KB with ECC and PCROP - ensures code integrity and secure firmware protection against readout attacks.
SRAM	32 KB total: 22 KB main SRAM (16 KB with parity), 10 KB CCM SRAM (parity-enabled) - guarantees data reliability for safety-critical variables.
Analog Peripherals	Dual 16-bit ADCs (0.25 µs), 4x comparators, 3x op-amps (PGA-capable), 4x 12-bit DACs - enables sensor fusion, precision actuator control, and self-calibration routines.
Math Accelerators	CORDIC (trigonometric functions) and FMAC (filtering) - offloads CPU for real-time motor vector control and adaptive filtering.
Communication	FDCAN (flexible data-rate), USB 2.0 FS with LPM/BCD, UCPD, 4x USART, 3x SPI, 3x I²C - supports automotive diagnostics, USB-C PD negotiation, and industrial fieldbus bridging.

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with 86 fast I/Os - all mappable to external interrupt vectors, multiple pins 5 V tolerant for mixed-voltage system interfacing.

Pin/Terminal	Circuit Role	Design Meaning
VDD, VDDA	Core & analog supply	1.71–3.6 V operation; separate analog domain ensures clean ADC/DAC reference and reduced noise coupling.
VSS, VSSA	Ground return paths	Dedicated analog ground (VSSA) isolates sensitive analog circuits from digital switching noise.
PA0–PA15, PB0–PB15, etc.	General-purpose I/O	86 GPIOs with interrupt capability, many supporting 5 V tolerance - simplifies level-shifting in industrial HMI and sensor interfaces.
PA1, PA2, PA3, PA4	ADC1_IN1, ADC1_IN2, ADC1_IN3, ADC1_IN4	Direct connection to 16-bit ADC1 channel inputs - enables simultaneous sampling of current/voltage feedback in motor control.
PA4, PA5	DAC1_OUT1, DAC2_OUT1	Buffered 12-bit DAC outputs (1 MSPS) - drive analog setpoints or calibration references with minimal external buffering.
PA8, PA11, PA12	MCO, USB_DM, USB_DP	USB 2.0 full-speed interface with built-in transceivers - eliminates need for external PHY in embedded USB-C applications.
PA15, PB3, PB4	JTDI, JTDO, JTCK	SWD/JTAG debug interface pins - supports real-time tracing and non-intrusive debugging during development and validation.

Key Features

Feature	Design Value
CORDIC accelerator	Hardware trigonometric computation (sin/cos/atan) - reduces motor FOC loop latency by >80% vs. software library.
FMAC unit	Dedicated filter math engine supporting FIR/IIR - enables real-time adaptive filtering for EMI suppression in power converters.
UCPD peripheral	Integrated USB Type-C™ Power Delivery controller - manages VBUS negotiation, role swapping, and fault protection without external IC.
LPTIM1 timer	Low-power 16-bit timer with ultra-low wake-up latency (<1 µs) - ideal for battery-backed RTC, periodic sensor polling, or energy harvesting duty cycling.
VREFBUF	Programmable internal reference (2.048 V / 2.5 V / 2.9 V) - eliminates external precision reference ICs in ADC/DAC calibration paths.

Applications

Industrial Motor Control

Digital Power Supply

Use Scenario: Three-phase BLDC motor drive with field-oriented control (FOC) in HVAC compressors or industrial pumps.

IC Role / Device Role / Timing Role: Main controller executing FOC algorithm, ADC sampling PWM-modulated phase currents, generating dead-time-compensated gate signals via TIM1/TIM8.

Use Value: CORDIC and FMAC accelerate vector transformations and current-loop filtering, enabling 20 kHz PWM switching with sub-microsecond loop latency.

Use Scenario: Isolated AC/DC or DC/DC converter with digital voltage/current regulation and USB-C PD compliance.

IC Role / Device Role / Timing Role: Primary digital controller managing PWM generation, voltage/current feedback acquisition, and UCPD communication for source/sink negotiation.

Use Value: Integrated UCPD eliminates discrete PD controller, while dual 16-bit ADCs enable simultaneous primary-side and secondary-side sensing with <1 LSB INL error.

Smart Sensor Node

Medical Instrumentation

Use Scenario: Battery-powered environmental sensor hub aggregating temperature, pressure, and gas readings with local edge analytics.

IC Role / Device Role / Timing Role: Low-power host MCU acquiring analog sensor data via ADCs, conditioning signals with op-amps, and transmitting over LPUART/USB.

Use Value: Stop 0 mode consumes 1.3 µA with SRAM retention and RTC wakeup - extends 2-AA battery life beyond 5 years.

Use Scenario: Portable patient monitor measuring ECG, SpO₂, and respiration using analog front-end signal conditioning.

IC Role / Device Role / Timing Role: Signal processor digitizing biopotential waveforms, applying real-time filtering via FMAC, and driving display via SPI/SAI.

Use Value: Hardware-parity SRAM and ECC Flash meet IEC 62304 Class C requirements; op-amp PGA mode enables programmable gain for varying electrode impedances.

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STM32G474RET6	Higher Flash (512 KB), larger SRAM (128 KB), additional crypto accelerators and SAI interface.	Targeted at audio-enabled HMI or secure boot applications where extended memory and cryptographic services are required.	Select when needing >128 KB Flash, AES/SHA engines, or stereo audio streaming - not drop-in compatible due to pin count and peripheral mapping differences.
STM32F303VCT6	No CORDIC/FMAC, lower max frequency (72 MHz), no UCPD, smaller Flash (256 KB), no FDCAN.	Suitable for cost-sensitive motor control where advanced math acceleration and USB-C PD are unnecessary.	Choose for legacy F3-based designs migrating to G4 footprint - requires firmware adaptation due to missing hardware accelerators and peripheral feature gaps.

Compared with STM32G474RET6, the STM32G431VBT6 offers optimized cost/performance for mid-tier motor and power applications without crypto/audio overhead; versus STM32F303VCT6, it delivers 2.4× higher compute throughput, integrated USB-C PD, and deterministic math acceleration - justifying migration for next-gen digital power designs.

Availability

STM32G431VBT6 is available at Aetrix Electronics and suitable for industrial motor control, digital power conversion, smart sensor nodes, and portable medical instrumentation requiring stable component supply across multi-year production cycles.

Supply support for STM32G431VBT6 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 analog-intensive embedded applications - combining Cortex-M4 performance with ST's patented analog IP and math accelerators to reduce system-level BOM and firmware complexity.

FAQ

What is the maximum operating temperature range for STM32G431VBT6?

The STM32G431VBT6 is qualified for industrial temperature range: –40 °C to +85 °C ambient. This is confirmed in Section 5.3.1 of DS12589 Rev 6, with thermal derating applied above 70 °C per JEDEC JESD51-2 guidelines. No extended temperature grade (–40 °C to +105 °C) is offered for this specific part number.

Does STM32G431VBT6 support hardware encryption or secure boot features?

The STM32G431VBT6 does not include hardware AES, SHA, or PKA accelerators. It supports basic security via proprietary code readout protection (PCROP), securable memory areas, and 96-bit unique ID. Secure boot must be implemented in firmware using external trusted execution environments or companion secure elements.

Can the internal op-amps be used as unity-gain buffers for ADC reference voltage stabilization?

Yes - all three op-amps support unity-gain buffer configuration with rail-to-rail input/output. When paired with the internal VREFBUF (2.048 V/2.5 V/2.9 V), they provide low-noise, low-drift reference buffering for ADC/DAC operation, as validated in Section 3.22 and Table 22 of DS12589 Rev 6.

Is the USB interface on STM32G431VBT6 compliant with USB 2.0 full-speed and USB-C specifications?

The USB peripheral supports USB 2.0 full-speed (12 Mbps) with Link Power Management (LPM) and Battery Charging Detection (BCD). However, native USB-C physical layer compliance requires external CC logic; the integrated UCPD handles USB Power Delivery protocol only - not the USB-C connector signaling or cable detection.

STM32G431VBT6 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 100-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:: 86

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:

STM32G431VBT6 FAQ

1.How can I place an order for STM32G431VBT6 through Aetrix?

Please submit a Request for Quotation (RFQ) for STM32G431VBT6 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 STM32G431VBT6 reliable?

The price and inventory of STM32G431VBT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G431VBT6 is usually 5 days.

3.What payment methods are accepted for STM32G431VBT6?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G431VBT6 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STM32G431VBT6?

STM32G431VBT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STM32G431VBT6 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 STM32G431VBT6?

For technical support, including STM32G431VBT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G431VBT6 requirements.

6.How does Aetrix verify that STM32G431VBT6 is sourced from the original manufacturer or authorized distributors?

All STM32G431VBT6 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 STM32G431VBT6 meets industry standards.

7.What is the process for return or replacement of STM32G431VBT6?

All STM32G431VBT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32G431VBT6, 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 STM32G431VBT6 part is unused and in its original packaging.

Return procedure for STM32G431VBT6:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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