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STMicroelectronics STM32G431CBY3TR
- Part No.:
- STM32G431CBY3TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 49-UFBGA, WLCSP
- Datasheet:
-
STM32G431CBY3TR.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 49WLCSP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
STM32G431CBY3TR 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), four rail-to-rail comparators, three operational amplifiers, and CORDIC/FMAC math accelerators - deployed in motor control, digital power conversion, and industrial sensing systems.
For engineers reviewing the STM32G431CBY3TR datasheet, STM32G431CBY3TR pinout, STM32G431CBY3TR application, or STM32G431CBY3TR equivalent, key selection criteria include its 48-pin UFQFPN package, FDCAN support for flexible data-rate automotive/industrial networks, UCPD interface for USB Type-C™ power delivery, and hardware-accelerated trigonometric/filter math for real-time control loops.
Technical Context
The STM32G431CBY3TR 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 ECC-protected Flash, 22 KB SRAM with parity on first 16 KB, and 10 KB CCM SRAM with parity - all accessible via a multi-AHB interconnect matrix supporting concurrent DMA transfers.
Analog integration centers on two independent 12-bit ADCs (up to 23 channels, 0.25 µs conversion), four ultra-fast comparators, three op-amps configurable as programmable-gain amplifiers (PGA), and dedicated hardware accelerators: CORDIC for sin/cos/tan/arctan and FMAC for FIR/IIR filtering - enabling deterministic 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 with ECC and PCROP; 22 KB SRAM + 10 KB CCM SRAM, both with hardware parity |
| Analog Peripherals | 2× 12-bit ADCs (0.25 µs, up to 23 ch); 4× comparators; 3× op-amps (PGA mode); 4× 12-bit DACs (2 buffered @ 1 MSPS, 2 unbuffered @ 15 MSPS) |
| Math Acceleration | CORDIC engine for trigonometric/hyperbolic functions; FMAC for 32-tap FIR/16-stage IIR filtering |
| Communication | FDCAN (flexible data-rate); 4× USART/UART (LIN/IrDA/ISO7816); 3× I²C (Fast-mode Plus, 1 Mbit/s); USB 2.0 FS + UCPD for USB Type-C™ PD |
| Timers & Control | 14 timers including 2× advanced motor-control timers (TIM1/TIM8) with dead-time generation, emergency stop, and 8× PWM outputs |
| Supply & Power | 1.71–3.6 V operation; POR/PDR/BOR reset; PVD; low-power modes (sleep/stop/standby/shutdown); RTC with VBAT backup |
Pinout & Package
STM32G431CBY3TR uses a 48-pin UFQFPN package (7 × 7 mm, 0.5 mm pitch) with exposed thermal pad, rated for industrial temperature range (–40°C to +85°C). Pin assignments are validated per STMicroelectronics DS12589 Rev 6, Section 4.3 (UFQFPN48 pinout description).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA | Core & analog supply | 1.71–3.6 V input; separate analog domain enables clean ADC/DAC reference |
| VSS, VSSA | Digital & analog ground | Separate ground planes reduce noise coupling into sensitive analog circuits |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD2 | General-purpose I/O | Up to 38 fast I/Os; most support external interrupts and 5 V tolerance |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7, PB0, PB1, PB14, PB15 | ADC inputs | Support simultaneous sampling across two ADCs for synchronized current/voltage measurement |
| PA4, PA5, PA6, PA7 | DAC outputs | PA4/PA5 = buffered external DACs (1 MSPS); PA6/PA7 = unbuffered internal DACs (15 MSPS) |
| PA11, PA12 | USB D+/D− | Integrated USB 2.0 full-speed transceiver with LPM and BCD support |
| PA11, PA12, PB9, PB15 | UCPD CC1/CC2, VBUS, VCONN | Dedicated pins for USB Type-C™ configuration channel and power delivery negotiation |
| PA13, PA14 | SWDIO/SWCLK | Serial Wire Debug interface - minimal 2-pin debug with no JTAG overhead |
Key Features
| Feature | Design Value |
|---|---|
| CORDIC accelerator | Hardware-computed sin/cos/tan/arctan with <100 ns latency - eliminates floating-point library overhead in motor angle estimation |
| FMAC filter engine | Configurable 32-tap FIR or 16-stage IIR filter running independently of CPU - enables real-time current loop filtering at 100+ kHz |
| Advanced motor timers (TIM1/TIM8) | 8-channel complementary PWM with programmable dead time, fault input, and emergency stop - supports 3-phase inverter gate driving |
| FDCAN controller | Flexible data-rate (up to 5 Mbps) with protocol abstraction - enables CAN FD communication in battery management and EV charging systems |
| UCPD interface | Integrated USB Type-C™ power delivery controller with VBUS monitoring and VCONN switching - reduces BOM count in portable industrial tools |
Applications
| Industrial Motor Drive | Digital Power Supply |
|---|---|
Use Scenario: Closed-loop field-oriented control (FOC) of 3-phase BLDC motors in HVAC blowers and pump drives. IC Role / Device Role / Timing Role: Main system controller executing FOC algorithm, generating 6-channel PWM with dead-time, sampling current/voltage via dual ADCs, and managing thermal/fault protection. Use Value: CORDIC computes rotor angle in <100 ns; FMAC filters current feedback at 100 kHz; TIM1/TIM8 deliver precise 6-channel PWM with <1 ns jitter. |
Use Scenario: Digital AC-DC and DC-DC power supplies with adaptive voltage regulation and PMBus communication. IC Role / Device Role / Timing Role: Primary digital controller performing PID regulation, voltage/current monitoring, fault logging, and isolated communication via I²C or UART. Use Value: Dual 12-bit ADCs sample primary/secondary side signals simultaneously; 4× DACs generate precise reference voltages; FDCAN enables high-speed telemetry in modular PSUs. |
| Battery Management System (BMS) | USB-C Powered Industrial Tool |
Use Scenario: Cell voltage, temperature, and current monitoring in 12S Li-ion battery packs for cordless power tools. IC Role / Device Role / Timing Role: Central BMS MCU acquiring sensor data, computing SOC/SOH, enforcing safety limits, and communicating via CAN or UART. Use Value: Hardware CRC ensures integrity of flash firmware updates; VREFBUF provides stable 2.048 V reference for 16-bit ADC oversampling; RTC enables timed cell balancing. |
Use Scenario: Portable handheld test equipment (e.g., multimeter, oscilloscope probe) powered and configured via USB-C. IC Role / Device Role / Timing Role: System-on-chip managing USB-C PD negotiation, battery charging, analog front-end acquisition, and display interface. Use Value: Integrated UCPD handles full PD contract negotiation without external IC; 3× op-amps condition sensor signals; LPUART maintains low-power BLE coexistence. |
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 GPIO), same core/peripherals but no UCPD or FDCAN | Suitable for space-constrained cost-sensitive designs without USB-C PD or CAN FD requirements | Select when board layout favors LQFP32 and USB-C/automotive networking is unnecessary |
| STM32G474RET6 | LQFP64 package (64-pin), 512 KB Flash, 128 KB SRAM, additional ADC/DAC channels, no UCPD but adds SAI audio interface | Targeted at higher-fidelity motor control and audio-enabled HMI applications | Choose for expanded memory, more analog resources, or audio streaming - not for USB-C PD systems |
Compared with STM32G431CBY3TR, the STM32G431KBT6 trades UCPD/FDCAN and I/O count for smaller footprint and lower cost, while the STM32G474RET6 offers greater memory and peripheral density at the expense of USB-C power delivery capability - making STM32G431CBY3TR uniquely balanced for compact, USB-C–enabled industrial controllers.
Availability
STM32G431CBY3TR is available at Aetrix Electronics and suitable for industrial motor drives, digital power supplies, battery management systems, and USB-C–powered portable tools requiring stable component supply across multi-year production cycles.
Supply support for STM32G431CBY3TR 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, resource-rich embedded control applications - combining real-time determinism, analog integration, and math acceleration for digital power, motor control, and smart sensing without external co-processors.
FAQ
What is the maximum operating frequency and associated performance metric of the STM32G431CBY3TR?
The STM32G431CBY3TR operates at up to 170 MHz with an Arm Cortex-M4 core featuring FPU and DSP extensions, delivering 213 DMIPS (Dhrystone MIPS) under ART Accelerator conditions. This performance is sustained with zero-wait-state execution from Flash memory due to the integrated Adaptive Real-Time accelerator, enabling deterministic real-time response in motor and power control loops.
Does the STM32G431CBY3TR support USB Type-C™ Power Delivery, and which pins are dedicated to this function?
Yes, the STM32G431CBY3TR integrates a full USB Type-C™ Power Delivery (UCPD) controller compliant with USB PD 3.0. Dedicated pins include PA11/PA12 (CC1/CC2), PB9 (VBUS sense), and PB15 (VCONN switch control), enabling complete PD contract negotiation, VBUS monitoring, and VCONN power management without external ICs.
How does the CORDIC and FMAC hardware accelerator improve real-time control performance?
The CORDIC accelerator computes trigonometric and hyperbolic functions (e.g., sin, cos, arctan) in under 100 ns, eliminating software-based floating-point libraries in motor FOC algorithms. The FMAC performs configurable 32-tap FIR or 16-stage IIR filtering autonomously, offloading the CPU and enabling deterministic 100+ kHz current loop filtering - critical for high-bandwidth digital power control.
What are the key analog features that differentiate the STM32G431CBY3TR from earlier STM32G0/G1 series MCUs?
Unlike STM32G0/G1, the STM32G431CBY3TR integrates four rail-to-rail analog comparators, three fully accessible operational amplifiers (configurable as PGAs), dual 12-bit ADCs with hardware oversampling and simultaneous sampling, and four 12-bit DACs (two buffered, two unbuffered). These features enable single-chip closed-loop control in motor drives and power supplies without external signal conditioning components.
STM32G431CBY3TR 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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32G431CBY3TR FAQ
1.How can I place an order for STM32G431CBY3TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32G431CBY3TR 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 STM32G431CBY3TR reliable?
The price and inventory of STM32G431CBY3TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G431CBY3TR is usually 5 days.
3.What payment methods are accepted for STM32G431CBY3TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G431CBY3TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32G431CBY3TR?
STM32G431CBY3TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32G431CBY3TR 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 STM32G431CBY3TR?
For technical support, including STM32G431CBY3TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G431CBY3TR requirements.
6.How does Aetrix verify that STM32G431CBY3TR is sourced from the original manufacturer or authorized distributors?
All STM32G431CBY3TR 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 STM32G431CBY3TR meets industry standards.
7.What is the process for return or replacement of STM32G431CBY3TR?
All STM32G431CBY3TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32G431CBY3TR, 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 STM32G431CBY3TR part is unused and in its original packaging.
Return procedure for STM32G431CBY3TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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