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STMicroelectronics STM32G431R8T6

Name: STM32G431R8T6
Brand: STMicroelectronics
SKU: STM32G431R8T6
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STM32G431R8T6

Manufacturer:: STMicroelectronics

Category:: Microcontrollers

Package:: 64-LQFP

Datasheet:: STM32G431R8T6.pdf

Description:: IC MCU 32BIT 64KB FLASH 64LQFP

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Product details

Overview

STM32G431R8T6 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), 3 op-amps, 4 comparators, and CORDIC/FMAC math accelerators - deployed in motor control, digital power supplies, and industrial sensing systems.

For engineers reviewing the STM32G431R8T6 datasheet, STM32G431R8T6 pinout, STM32G431R8T6 application, or STM32G431R8T6 equivalent, key selection considerations include its LQFP64 package, FDCAN support, 5 V-tolerant I/Os, hardware RNG, USB 2.0 FS + UCPD, and real-time analog co-processing capability for closed-loop control.

Technical Context

The STM32G431R8T6 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 PCROP and ECC, 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, 0.25 µs), four rail-to-rail comparators, three programmable-gain op-amps with full terminal access, and dedicated hardware accelerators: CORDIC for trigonometric computation and FMAC for FIR/IIR filtering - enabling deterministic real-time signal processing 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 (ECC, PCROP, 1 KB OTP), 22 KB SRAM + 10 KB CCM-SRAM (all with parity)
Analog Peripherals	Dual 12-bit ADCs (0.25 µs, 23 ch), 4x 12-bit DACs (2 buffered @1 MSPS, 2 unbuffered @15 MSPS), 3 op-amps, 4 comparators
Math Acceleration	CORDIC engine for sin/cos/tan/atan/sqrt/log/exp; FMAC for 32-bit filter coefficient computation
Timers & Control	14 timers including 2x advanced motor-control timers (TIM1/TIM8), 1x low-power timer, RTC with alarm/wakeup
Communication	FDCAN (flexible data rate), 4x USART/UART (LIN/IrDA), 3x I²C (Fast Mode Plus), 3x SPI, USB 2.0 FS + UCPD, SAI
Package & I/O	LQFP64 (10 × 10 mm), up to 52 GPIOs, multiple 5 V-tolerant pins, SWD/JTAG debug interface

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; 64-pin square-outline quad flat pack suitable for automated assembly and thermal management in industrial motor drives and power converters.

Pin/Terminal	Circuit Role	Design Meaning
VDD, VDDA	Core & analog supply	1.71–3.6 V operation; separate analog domain enables clean ADC/DAC reference
VSS, VSSA	Ground return	Dedicated analog ground plane reduces noise coupling into precision analog circuits
PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE15	General-purpose I/O	Up to 52 GPIOs; many support 5 V tolerance, external interrupts, and alternate functions (ADC, TIM, USART, etc.)
PA1, PA2, PA3, PA4, PA5, PA6, PA7	ADC1_INx / ADC2_INx	Direct connection to dual 12-bit ADCs; supports simultaneous sampling and hardware oversampling
PA4, PA5	DAC1_OUT1 / DAC2_OUT1	Buffered 12-bit DAC outputs with 1 MSPS update rate and rail-to-rail swing
PA0, PA1, PA2, PA3, PB0, PB1	OPAMPx_VINP/VINN/VOUT	Full terminal access to 3 op-amps configurable as PGA, transimpedance, or comparator input stage
PA0, PA1, PA2, PA3, PA4, PA5, PA6, PA7	COMPx_INP/INN	Input terminals for 4 ultra-fast rail-to-rail analog comparators with programmable hysteresis
PA11, PA12, PA13, PA14, PA15	USB_DM/DP/SWCLK/SWDIO/NRST	Integrated USB 2.0 FS PHY with LPM/BCD; SWD debug interface with reset control
PB8, PB9	FDCAN1_RX/TX	Flexible Data Rate CAN transceiver interface supporting ISO 11898-1 up to 5 Mbps
PC13, PC14, PC15	RTC_REFIN / OSC32_IN / OSC32_OUT	Supports 32.768 kHz crystal for calendar RTC with alarm and periodic wakeup from Stop/Standby

Key Features

Feature	Design Value
CORDIC accelerator	Hardware trigonometric/logarithmic computation in <100 ns, offloading CPU for real-time motor vector control
FMAC unit	32-bit filter math accelerator supporting 16×16 and 32×32 MAC operations for adaptive digital power supply compensation
Dual ADC architecture	Two independent 12-bit ADCs with interleaved sampling, hardware oversampling up to 16×, and 0.25 µs conversion time
Programmable-gain op-amps	Three fully accessible op-amps usable as PGAs (gain 1–16), transimpedance amps, or comparator front-ends
FDCAN with flexible data rate	Single physical layer supporting classic CAN (1 Mbps) and FD CAN (5 Mbps payload) for automotive-grade diagnostics and control
UCPD controller	Integrated USB Type-C™ Power Delivery controller supporting source/sink role negotiation and VBUS monitoring

Applications

Industrial Motor Control

Digital Power Supply

Use Scenario: Field-oriented control (FOC) of 3-phase BLDC/PMSM motors in HVAC blowers and industrial pumps.

IC Role / Device Role / Timing Role: Real-time execution of FOC algorithm, PWM generation with dead-time insertion, ADC sampling synchronization, and current/voltage sensing.

Use Value: CORDIC + FMAC enable sub-microsecond vector math; dual ADCs capture phase currents simultaneously; advanced timers deliver precise 3-phase PWM with emergency stop.

Use Scenario: Closed-loop regulation in AC-DC and DC-DC SMPS with adaptive compensation and digital communication.

IC Role / Device Role / Timing Role: Voltage/current loop controller, digital compensator, PMBus/I²C interface, and fault protection supervisor.

Use Value: Hardware FMAC computes adaptive PID coefficients in real time; 12-bit DACs generate precise reference voltages; FDCAN enables high-speed diagnostics.

Smart Sensor Node

USB-C Power Delivery System

Use Scenario: Multi-sensor fusion node (temperature, pressure, vibration) with edge analytics and wireless gateway interface.

IC Role / Device Role / Timing Role: Analog front-end aggregator, sensor data preprocessor, secure bootloader host, and UART-to-Bluetooth/Wi-Fi bridge controller.

Use Value: Integrated op-amps condition raw sensor signals; hardware RNG enables secure key generation; low-power timers extend battery life in Stop mode.

Use Scenario: USB-C port controller in laptop docks, monitors, and charging stations supporting dual-role power negotiation.

IC Role / Device Role / Timing Role: UCPD protocol engine, VBUS voltage/current monitor, CC line state manager, and USB 2.0 FS interface handler.

Use Value: On-die UCPD eliminates external transceivers; hardware CRC and secure memory protect firmware updates; 5 V-tolerant I/Os simplify level-shifting design.

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), 48 GPIOs vs. 52; same core, memory, and peripheral set	Suitable for space-constrained designs with reduced I/O count and no FDCAN requirement	Select when board layout area is critical and advanced timer/ADC channel count can be reduced
STM32G474RET6	LQFP64, 512 KB Flash, 128 KB SRAM, additional crypto/hash accelerators, no UCPD	Targeted at higher-security applications (TLS, secure boot) and complex control algorithms requiring larger code footprint	Choose when cryptographic acceleration or >128 KB Flash is required; UCPD not needed

Compared with STM32G431K8T6, the R8T6 offers more I/Os and FDCAN in the same LQFP64 footprint; versus STM32G474RET6, it trades Flash/SRAM size and crypto for integrated USB-C power delivery and lower cost in mid-complexity industrial control.

Availability

STM32G431R8T6 is available at Aetrix Electronics and suitable for industrial motor drives, digital power supplies, smart sensor nodes, and USB-C PD systems requiring stable component supply across production lifecycles.

Supply support for STM32G431R8T6 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-performance, cost-sensitive industrial control applications - integrating real-time analog signal processing, motor control peripherals, and USB-C power delivery in a single chip to reduce system BOM and PCB complexity.

FAQ

What is the maximum operating frequency and associated performance metric of the STM32G431R8T6?

The STM32G431R8T6 operates at up to 170 MHz with the Arm Cortex-M4 core, delivering 213 DMIPS (Dhrystone MIPS) performance. This is achieved with zero-wait-state execution from Flash memory using the ART Accelerator, and includes full DSP instruction support and a single-precision FPU for floating-point-intensive tasks like motor control and digital filtering.

Does the STM32G431R8T6 support hardware-based cryptographic functions?

No, the STM32G431R8T6 does not include dedicated cryptographic accelerators (AES, HASH, PKA). It features a true random number generator (RNG) and CRC calculation unit, but lacks hardware AES engines or public-key accelerators found in the G47x or H7 series. Secure firmware updates rely on software libraries and secure memory regions (PCROP).

How many analog-to-digital converter (ADC) channels does the STM32G431R8T6 support, and what is their resolution and speed?

The device integrates two independent 12-bit ADCs supporting up to 23 total channels (including internal sensors). Each ADC achieves 0.25 µs conversion time (4 MSPS), with hardware oversampling up to 16× for effective resolution up to 16 bits. Input voltage range is 0 to VREF+ (typically 0–3.6 V), and both ADCs support simultaneous sampling for three-phase current measurement.

Is the STM32G431R8T6 pin-compatible with other members of the STM32G431 family?

Yes, the STM32G431R8T6 in LQFP64 is pin-compatible with other G431 variants in the same package (e.g., STM32G431CBT6, STM32G431V8T6), sharing identical pin definitions, power domains, and peripheral mappings. However, feature availability (e.g., FDCAN, UCPD, number of ADC channels) varies by part number - always verify peripheral enablement in the specific device's reference manual.

STM32G431R8T6 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®-M4

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:: 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 23x12b; D/A 4x12b

Oscillator Type:: Internal

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

STM32G431R8T6 FAQ

1.How can I place an order for STM32G431R8T6 through Aetrix?

Please submit a Request for Quotation (RFQ) for STM32G431R8T6 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 STM32G431R8T6 reliable?

The price and inventory of STM32G431R8T6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G431R8T6 is usually 5 days.

3.What payment methods are accepted for STM32G431R8T6?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G431R8T6 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STM32G431R8T6?

STM32G431R8T6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STM32G431R8T6 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 STM32G431R8T6?

For technical support, including STM32G431R8T6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G431R8T6 requirements.

6.How does Aetrix verify that STM32G431R8T6 is sourced from the original manufacturer or authorized distributors?

All STM32G431R8T6 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 STM32G431R8T6 meets industry standards.

7.What is the process for return or replacement of STM32G431R8T6?

All STM32G431R8T6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32G431R8T6, 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 STM32G431R8T6 part is unused and in its original packaging.

Return procedure for STM32G431R8T6:

1.Submit a request within 90 days.

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

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