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STMicroelectronics STM32G431RBT6
- Part No.:
- STM32G431RBT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32G431RBT6.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:588
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Product details
Overview
STM32G431RBT6 from STMicroelectronics is an Arm® Cortex®-M4 32-bit MCU 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), four rail-to-rail comparators, three op-amps in PGA mode, and CORDIC/FMAC math accelerators - deployed in motor control, digital power supplies, and industrial sensor nodes.
For engineers reviewing the STM32G431RBT6 datasheet, STM32G431RBT6 pinout, STM32G431RBT6 application, or STM32G431RBT6 equivalent, key selection criteria include its LQFP64 package with 51 GPIOs (19 5V-tolerant), FDCAN support for flexible data-rate automotive/industrial networks, UCPD interface for USB Type-C™ power delivery, and hardware RNG for secure boot and cryptographic key generation.
Technical Context
The STM32G431RBT6 implements a dual-bank Flash architecture with PCROP and securable memory regions, enabling robust firmware updates and IP protection. Its ART Accelerator delivers zero-wait-state execution from Flash at 170 MHz, while the CCM SRAM (10 KB) provides deterministic low-latency access for time-critical ISR and control loops.
Its analog subsystem integrates two independent 16-bit ADCs with hardware oversampling (up to 16x), four ultra-fast comparators with programmable hysteresis, and three fully accessible op-amps configurable as programmable-gain amplifiers - all sharing a common 0–3.6 V input range and referenced to internal VREFBUF (2.048 V / 2.5 V / 2.9 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 with FPU, 170 MHz max, 213 DMIPS - enables real-time DSP and control algorithms without external coprocessor |
| Memory | 128 KB Flash (ECC, PCROP), 22 KB SRAM + 10 KB CCM SRAM - supports secure firmware storage and deterministic interrupt response |
| Analog | Dual 16-bit ADCs (23 ch, 0.25 µs), 4× comparators, 3× op-amps (PGA mode), 4× 12-bit DACs - enables high-fidelity sensor acquisition and closed-loop actuation |
| Math Acceleration | CORDIC (trig/log/exp), FMAC (filtering) - offloads 30–50% CPU cycles in motor control and digital power applications |
| Timers | 14 timers including 2× advanced motor-control timers (TIM1/TIM8) with dead-time generation and emergency stop - supports 3-phase PMSM/BLDC drive |
| Interfaces | FDCAN (flexible data-rate), UCPD (USB Type-C™ PD), 4× USART, 3× SPI, 3× I²C, USB FS, SAI - enables mixed-signal edge node with wired connectivity and power negotiation |
| Supply & Power | 1.71–3.6 V operation, multiple low-power modes (Stop 0/1, Standby, Shutdown), VBAT RTC backup - suitable for battery-backed industrial controllers |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; 64-pin layout supporting 51 general-purpose I/Os (19 5V-tolerant), 3x analog inputs per ADC, dedicated UCPD pins (UCPD1_DB, UCPD1_CC1/CC2), FDCAN_RX/TX, and full SWD/JTAG debug access.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Core & I/O supply rails | Separate 1.71–3.6 V domains enable noise isolation between analog/digital sections |
| VDDA, VSSA | Analog power & ground | Dedicated analog supply pins reduce coupling noise into ADC/DAC/OPAMP circuits |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PF0–PF1 | General-purpose I/Os | 51 GPIOs with EXTI capability; 19 support 5V tolerance - simplify level-shifting in mixed-voltage systems |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7, PB0, PB1, PB2, PC0–PC5, PC10–PC12, PD2 | ADC1/ADC2 inputs | 23-channel multiplexed analog input mapping - supports simultaneous sampling across multiple sensors |
| PA4, PA5, PA6, PA7 | DAC1/DAC2 outputs | 2 buffered external DACs (1 MSPS) + 2 unbuffered internal DACs (15 MSPS) - enable precision waveform generation and fast feedback control |
| PA0, PA1, PA2, PA3, PB0, PB1, PB2, PC4, PC5 | Comparator inputs (COMP1–COMP4) | Four independent rail-to-rail comparators with programmable hysteresis - used for overvoltage/undervoltage detection and zero-crossing sensing |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7, PB0, PB1, PB2, PC0–PC5 | Op-amp inputs/outputs (OPAMP1–OPAMP3) | Three fully accessible op-amps configurable as PGA (gain 1–40) - eliminate external signal conditioning in current/voltage sensing |
| PA11, PA12, PB9, PB12, PB13, PB14, PB15 | USB/UCPD interface | Dedicated UCPD1 pins (CC1/CC2/DB) + USB D+/D− - enable native USB Type-C™ port controller functionality without external IC |
| PA11, PA12, PB8, PB9 | FDCAN1 interface | FDCAN_RX/TX pins compliant with ISO 11898-1:2015 - support CAN FD up to 5 Mbit/s in automotive diagnostics and industrial fieldbus |
| PA13, PA14, PA15, PB3, PB4 | SWD/JTAG debug | Serial Wire Debug (SWD) on PA13/PA14 reduces debug footprint vs JTAG - ideal for space-constrained PCBs |
Key Features
| Feature | Design Value |
|---|---|
| CORDIC accelerator | Hardware trigonometric/logarithmic computation in <100 ns - eliminates software library overhead in motor angle estimation |
| FMAC unit | 16×16-bit MAC with 32-bit accumulator - accelerates FIR/IIR filtering for real-time current/voltage harmonics analysis |
| VREFBUF | Programmable 2.048 V / 2.5 V / 2.9 V reference output - enables precise ADC/DAC calibration without external voltage references |
| UCPD peripheral | Integrated USB Power Delivery controller with CC logic and BMC decoding - replaces discrete UCPD IC in USB-C power sink/source designs |
| Advanced timers (TIM1/TIM8) | 8-channel PWM with complementary outputs, programmable dead time (1–1023 ns), and emergency stop input - meets IEC 61800-5-2 functional safety requirements |
Applications
| Industrial Motor Control | Digital Power Supply |
|---|---|
Use Scenario: Field-oriented control (FOC) of 3-phase PMSM motors in HVAC blowers and pump drives. IC Role / Device Role / Timing Role: Main system controller executing FOC algorithm, PWM generation, current sensing, and fault protection. Use Value: TIM1/TIM8 advanced timers deliver synchronized 6-channel PWM with sub-ns dead-time control; CORDIC computes sine/cosine for rotor position in <200 ns. | Use Scenario: Digital AC-DC and DC-DC converters with adaptive voltage regulation and load transient response. IC Role / Device Role / Timing Role: Real-time power stage controller managing PWM duty cycle, voltage/current loop compensation, and thermal derating. Use Value: Dual 16-bit ADCs sample voltage/current simultaneously at 2 MSPS; FMAC executes PID+feedforward control in <1 µs per loop. |
| USB-C Power Delivery Node | Smart Sensor Hub |
Use Scenario: USB-C powered device (e.g., docking station) negotiating power contracts up to 100 W. IC Role / Device Role / Timing Role: UCPD controller handling BMC signaling, policy engine, and VBUS monitoring/control. Use Value: Integrated UCPD peripheral eliminates external transceiver; hardware CRC and RNG ensure secure PD message integrity and session key generation. | Use Scenario: Multi-sensor industrial node aggregating temperature, pressure, and vibration data with local preprocessing. IC Role / Device Role / Timing Role: Edge AI inference accelerator and sensor fusion hub with secure OTA update capability. Use Value: 128 KB Flash with PCROP protects firmware IP; hardware RNG seeds TLS handshake for encrypted cloud telemetry; 5V-tolerant GPIOs interface directly with legacy 5 V sensors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-performance mixed-signal MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32G474RET6 | Higher Flash (512 KB), larger SRAM (128 KB), additional crypto accelerators (AES, HASH, PKA), no UCPD | Targets secure IoT gateways requiring TLS acceleration and larger firmware images | Select when cryptographic offload and >256 KB Flash are required; avoid if UCPD or cost-sensitive BOM is critical |
| STM32F303RET6 | Cortex-M4 (72 MHz), no CORDIC/FMAC, 512 KB Flash, 64 KB SRAM, no UCPD/FDCAN, only basic comparators/op-amps | Suitable for simpler motor control or analog front-end where 170 MHz performance and USB-C PD are unnecessary | Choose for legacy F3 ecosystem compatibility and lower cost; not recommended for FDCAN or real-time math-intensive workloads |
Compared with STM32G474RET6, the STM32G431RBT6 trades Flash size and crypto features for UCPD integration and lower BOM cost; versus STM32F303RET6, it delivers 2.4× higher CPU throughput, hardware math acceleration, and modern USB-C/FDCAN interfaces essential for next-gen industrial edge devices.
Availability
STM32G431RBT6 is available at Aetrix Electronics and suitable for industrial motor drives, digital power supplies, USB-C PD accessories, and smart sensor nodes requiring stable component supply across multi-year production cycles.
Supply support for STM32G431RBT6 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, MEMS, and analog components for industrial, automotive, and consumer markets.
The STM32G4 series targets high-efficiency digital power conversion and real-time motor control, integrating math accelerators, rich analog peripherals, and USB-C/UCPD to replace discrete signal chain and interface components in compact industrial edge nodes.
FAQ
What is the maximum operating frequency and corresponding performance metric of the STM32G431RBT6?
The STM32G431RBT6 operates at up to 170 MHz with an ART Accelerator enabling zero-wait-state Flash execution. Its performance is rated at 213 DMIPS (Dhrystone 2.1), verified under conditions of 1.71–3.6 V supply and ambient temperature of 25 °C. This frequency is achievable across the full industrial temperature range (–40 °C to +85 °C) with appropriate voltage scaling.
Does the STM32G431RBT6 support USB Type-C™ Power Delivery, and which pins are dedicated to this function?
Yes, the STM32G431RBT6 integrates a full USB Type-C™ Power Delivery (UCPD) controller. Dedicated pins include UCPD1_CC1 and UCPD1_CC2 (for configuration channel signaling) and UCPD1_DB (for BMC data bus), all located on Port B (PB14, PB15, PB9). These pins support physical layer compliance with USB PD 3.0 and handle policy engine tasks without external transceivers.
How many analog-to-digital converter channels does the STM32G431RBT6 support, and what is their maximum resolution and speed?
The STM32G431RBT6 integrates two independent 16-bit ADCs (ADC1 and ADC2) supporting up to 23 external channels total. Each ADC achieves 0.25 µs conversion time (4 MSPS) at 12-bit resolution, with hardware oversampling enabling effective 16-bit resolution at reduced sampling rates. The input voltage range is 0 to VREFINT or 0 to 3.6 V, selectable per channel.
What low-power modes are available on the STM32G431RBT6, and what is the typical current consumption in Stop 0 mode?
The STM32G431RBT6 supports Sleep, Stop 0, Stop 1, Standby, and Shutdown modes. In Stop 0 mode (Flash powered down, SRAM retained, RTC running), typical current consumption is 1.2 µA at 3.3 V and 25 °C, with wake-up possible via EXTI lines, RTC alarm, or ULP timers. This mode retains full register state and enables sub-2 µs wake-up latency for responsive event-driven operation.
STM32G431RBT6 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:
STM32G431RBT6 FAQ
1.How can I place an order for STM32G431RBT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32G431RBT6 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 STM32G431RBT6 reliable?
The price and inventory of STM32G431RBT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G431RBT6 is usually 5 days.
3.What payment methods are accepted for STM32G431RBT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G431RBT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32G431RBT6?
STM32G431RBT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32G431RBT6 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 STM32G431RBT6?
For technical support, including STM32G431RBT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G431RBT6 requirements.
6.How does Aetrix verify that STM32G431RBT6 is sourced from the original manufacturer or authorized distributors?
All STM32G431RBT6 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 STM32G431RBT6 meets industry standards.
7.What is the process for return or replacement of STM32G431RBT6?
All STM32G431RBT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32G431RBT6, 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 STM32G431RBT6 part is unused and in its original packaging.
Return procedure for STM32G431RBT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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