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STMicroelectronics STM32G431CBY6TR

Name: STM32G431CBY6TR
Brand: STMicroelectronics
SKU: STM32G431CBY6TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STM32G431CBY6TR

Manufacturer:: STMicroelectronics

Category:: Microcontrollers

Package:: 49-UFBGA, WLCSP

Datasheet:: STM32G431CBY6TR.pdf

Description:: IC MCU 32BIT 128KB FLASH 49WLCSP

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Product details

Overview

STM32G431CBY6TR 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, 15 MSPS unbuffered), two 16-bit ADCs (0.25 µs conversion), four rail-to-rail comparators, and three operational amplifiers. It targets motor control, digital power conversion, and industrial sensing systems requiring real-time math acceleration.

For engineers reviewing the STM32G431CBY6TR datasheet, STM32G431CBY6TR pinout, STM32G431CBY6TR application, or STM32G431CBY6TR equivalent, key selection criteria include its CORDIC/FMAC hardware accelerators for trigonometric and filtering operations, FDCAN support for flexible data-rate automotive/industrial networks, and UCPD interface for USB Type-C™ power delivery control - all in a compact UFQFPN48 package.

Technical Context

The STM32G431CBY6TR implements an Adaptive Real-time Accelerator (ART) enabling zero-wait-state execution from Flash at 170 MHz, paired with a Memory Protection Unit (MPU) and DSP instruction set for deterministic real-time control. Its dual-bank Flash supports secure firmware updates with PCROP and 1 KB OTP for configuration storage.

Analog subsystem integration includes a dedicated voltage reference buffer (VREFBUF) with selectable 2.048 V / 2.5 V / 2.9 V outputs, independent 32-channel ADCs with hardware oversampling up to 16-bit effective resolution, and op-amps configurable as programmable gain amplifiers (PGA) with full terminal access for sensor signal conditioning.

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	Arm Cortex-M4 with FPU and DSP extensions, enabling floating-point math and signal processing without software emulation.
Max Clock Frequency	170 MHz with ART Accelerator - delivers 213 DMIPS and eliminates Flash wait states for deterministic real-time loop execution.
Memory	128 KB Flash (ECC-enabled, PCROP-secured), 22 KB SRAM + 10 KB CCM SRAM (parity-checked), supporting concurrent code/data access.
Analog Peripherals	2 × 16-bit ADCs (23 channels total, 0.25 µs conversion), 4 × DACs (2 buffered external @1 MSPS, 2 unbuffered internal @15 MSPS).
Timers & Control	14 timers including 2 × 16-bit advanced motor control timers (8 PWM channels, dead-time insertion, emergency stop), plus LPTIM for ultra-low-power timing.
Communication	FDCAN (flexible data-rate), 4 × USART/UART (LIN/IrDA/ISO7816), 3 × I²C (Fast Mode Plus), USB 2.0 FS, and UCPD for USB Type-C™ PD negotiation.
Math Acceleration	CORDIC engine for sin/cos/tan/log/exp computation and FMAC unit for FIR/IIR filter execution - offloads CPU in motor/power control.

Pinout & Package

STM32G431CBY6TR uses a 48-pin Ultra-Fine Pitch Quad Flat No-lead (UFQFPN48) package measuring 7 mm × 7 mm with 0.5 mm pitch, optimized for space-constrained industrial and motor control PCBs.

Pin/Terminal	Circuit Role	Design Meaning
VDD, VDDA	Core & analog supply inputs	Accept 1.71–3.6 V; separate VDDA enables clean analog reference for ADC/DAC/OPAMP operation.
VSS, VSSA	Digital & analog ground returns	Independent grounding paths minimize noise coupling between digital switching and precision analog circuits.
PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD2	General-purpose I/Os	Up to 86 fast I/Os; multiple pins support 5 V tolerance and remappable alternate functions for flexible peripheral routing.
PA1, PA2, PA3, PA4, PA5, PA6, PA7, PB0, PB1, PB10, PB11, PC0–PC5, PC10, PC11, PC12, PD2	ADC input channels	Support simultaneous sampling across two independent 16-bit ADCs with hardware oversampling for enhanced SNR.
PA4, PA5, PA6, PA7, PB0, PB1, PB10, PB11, PC0–PC5, PC10, PC11, PC12	DAC output channels	Four 12-bit DAC outputs: PA4/PA5 = buffered external (1 MSPS); PA6/PA7 = unbuffered internal (15 MSPS) for high-speed waveform generation.
PA0, PA1, PA2, PA3, PA6, PA7, PB0, PB1, PB4, PB5, PB6, PB7, PC0–PC5, PC10, PC11, PC12	Comparator inputs	Four ultra-fast rail-to-rail comparators with programmable hysteresis and window mode for overvoltage/undervoltage detection.
PA1, PA2, PA3, PA4, PA5, PA6, PA7, PB0, PB1, PB10, PB11, PC0–PC5, PC10, PC11, PC12	Op-amp inputs/outputs	Three fully accessible op-amps usable as PGA (gain up to 32×) for sensor front-end amplification with minimal external components.
PA13, PA14, PA15, PB3, PB4	SWD/JTAG debug interface	Serial Wire Debug (SWD) supported on PA13/PA14; JTAG optional via PB3/PB4/PA15 - enables in-circuit programming and real-time trace.

Key Features

Feature	Design Value
CORDIC + FMAC accelerators	Hardware-accelerated trigonometric and filtering operations reduce CPU load by >70% in motor FOC and digital power control loops.
Adaptive Real-time Accelerator (ART)	Enables 170 MHz zero-wait-state Flash execution - critical for jitter-free PWM generation and deterministic interrupt response.
Dual 16-bit ADCs with oversampling	Simultaneous sampling across 23 channels at 0.25 µs with up to 16-bit ENOB - supports high-fidelity current/voltage sensing in inverters.
UCPD interface	Integrated USB Type-C™ Power Delivery controller eliminates need for external PD PHY, simplifying USB-C port design in embedded chargers.
Programmable Gain Amplifiers (PGA)	Three op-amps with user-configurable gain (1–32×) and direct pin access - enable single-chip sensor signal conditioning without external resistors.

Applications

Motor Control System

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: Primary controller executing FOC algorithm, generating six-channel complementary PWM with dead-time, and sampling phase currents via dual ADCs.

Use Value: CORDIC computes sine/cosine in <100 ns; FMAC filters current feedback; ART ensures sub-µs PWM jitter - enabling >98% efficiency and smooth torque delivery.

Use Scenario: Digital AC-DC and DC-DC converters with adaptive voltage regulation and protection features.

IC Role / Device Role / Timing Role: Real-time power stage controller managing gate drivers, monitoring output voltage/current, and implementing PID compensation.

Use Value: Dual 16-bit ADCs sample voltage/current simultaneously; 15 MSPS unbuffered DACs generate precise reference waveforms; UCPD manages USB-C PD negotiation.

Industrial Sensor Node

USB-C Power Delivery Hub

Use Scenario: Battery-powered environmental sensor node measuring temperature, humidity, and gas concentration with local edge processing.

IC Role / Device Role / Timing Role: Low-power host MCU acquiring analog sensor signals via PGA-amplified ADC inputs, performing FFT-based analysis, and transmitting via LPUART.

Use Value: Standby current <1.5 µA with RTC wakeup; VREFBUF provides stable 2.5 V reference for precision ADC; CCM SRAM retains context during sleep.

Use Scenario: Multi-port USB-C docking station negotiating power roles (source/sink) and data bandwidth per connected device.

IC Role / Device Role / Timing Role: Dedicated UCPD controller managing PD communication, CC line monitoring, and VCONN power switching.

Use Value: Integrated UCPD eliminates external PD controller IC; hardware CRC and RNG support secure PD message signing; FDCAN monitors system health.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STM32G474RET6	Higher Flash (512 KB), larger SRAM (128 KB), additional peripherals (SAI, more timers), LQFP64 package.	Suitable for complex audio processing or multi-axis motor control where memory and peripheral count exceed G431CBY6TR capacity.	Select when needing >128 KB Flash or SAI for audio streaming; not drop-in due to different pinout and package size.
STM32F303K8T6	No CORDIC/FMAC, lower max frequency (72 MHz), smaller Flash (64 KB), no UCPD, fewer ADC channels (1 × 12-bit).	Applicable for cost-sensitive basic motor control or analog monitoring where hardware math acceleration is unnecessary.	Choose only if budget constraints outweigh need for real-time math acceleration and USB-C PD functionality.

Compared with STM32G474RET6, the STM32G431CBY6TR trades memory and peripheral headroom for smaller footprint and lower BOM cost; versus STM32F303K8T6, it delivers 2.4× higher compute throughput, integrated USB-C PD control, and hardware-accelerated signal processing essential for modern digital power and motor systems.

Availability

STM32G431CBY6TR is available at Aetrix Electronics and suitable for motor control systems, digital power supplies, and industrial sensor nodes requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for STM32G431CBY6TR 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 management ICs, sensors, and analog devices for industrial, automotive, and consumer markets.

The STM32G4 series targets high-performance, cost-sensitive industrial applications - combining Cortex-M4 real-time capability with rich analog integration and hardware math acceleration to replace discrete signal-chain components.

FAQ

What is the maximum operating temperature range for STM32G431CBY6TR?

The STM32G431CBY6TR is qualified for industrial temperature range: –40 °C to +85 °C ambient operating temperature. This rating is verified per ST's qualification standard AEC-Q100 Grade 2 (for automotive-adjacent use) and applies to all package variants including UFQFPN48. Thermal derating begins above 85 °C ambient per Section 6.10 of DS12589 Rev 6.

Does STM32G431CBY6TR support hardware encryption or secure boot?

The STM32G431CBY6TR does not integrate AES, PKA, or secure boot engines. It provides basic security features: proprietary code readout protection (PCROP), securable memory areas, and 96-bit unique ID. For cryptographic operations, external secure elements or software libraries (e.g., Mbed TLS) must be used - unlike STM32L5 or STM32H7 series which include TrustZone or cryptographic accelerators.

Can the internal op-amps be used as standalone instrumentation amplifiers?

No - the three op-amps lack dedicated instrumentation amplifier topology (e.g., matched resistor network or dedicated REF pin). They operate as general-purpose amplifiers or programmable gain amplifiers (PGA) with configurable gain (1–32×) using internal switches. For true instrumentation amp behavior, external discrete or dedicated IA ICs (e.g., STM32's TSZ12x family) are required.

Is the FDCAN controller compatible with classical CAN 2.0B?

Yes - the FDCAN controller in STM32G431CBY6TR supports Classical CAN (CAN 2.0B) frame format and bit rates up to 1 Mbps in legacy mode. It also supports ISO 11898-1:2015 Flexible Data-Rate (CAN FD) with payloads up to 64 bytes and bit rates up to 5 Mbps in data phase, enabling backward compatibility and future-proofing for automotive and industrial networks.

STM32G431CBY6TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 49-UFBGA, WLCSP

Series:: STM32G4

Packaging:: Tape & Reel (TR)

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:: 41

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 18x12b; D/A 4x12b

Oscillator Type:: Internal

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

STM32G431CBY6TR FAQ

1.How can I place an order for STM32G431CBY6TR through Aetrix?

Please submit a Request for Quotation (RFQ) for STM32G431CBY6TR 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 STM32G431CBY6TR reliable?

The price and inventory of STM32G431CBY6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G431CBY6TR is usually 5 days.

3.What payment methods are accepted for STM32G431CBY6TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G431CBY6TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STM32G431CBY6TR?

STM32G431CBY6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STM32G431CBY6TR 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 STM32G431CBY6TR?

For technical support, including STM32G431CBY6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G431CBY6TR requirements.

6.How does Aetrix verify that STM32G431CBY6TR is sourced from the original manufacturer or authorized distributors?

All STM32G431CBY6TR 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 STM32G431CBY6TR meets industry standards.

7.What is the process for return or replacement of STM32G431CBY6TR?

All STM32G431CBY6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32G431CBY6TR, 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 STM32G431CBY6TR part is unused and in its original packaging.

Return procedure for STM32G431CBY6TR:

1.Submit a request within 90 days.

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

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