My Inquiry
My Account
STMicroelectronics STM32G431KBT6TR
- Part No.:
- STM32G431KBT6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
STM32G431KBT6TR.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,889
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM32G431KBT6TR from STMicroelectronics is a 32-bit Arm® Cortex®-M4 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, dual 12-bit ADCs (0.25 µs conversion), 3 op-amps, and 4 comparators - deployed in motor control, digital power conversion, and industrial sensing systems.
For engineers reviewing the STM32G431KBT6TR datasheet, STM32G431KBT6TR pinout, STM32G431KBT6TR application, or STM32G431KBT6TR equivalent, key selection considerations include FDCAN support, CORDIC/FMAC math acceleration, 5 V-tolerant I/Os, ultra-low-power stop/standby modes, and UCPD interface for USB Type-C™ power delivery control.
Technical Context
The device 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.
Analog subsystem integration includes three rail-to-rail op-amps configurable as programmable-gain amplifiers (PGA), two buffered 1 MSPS DAC outputs, and a dedicated voltage reference buffer (VREFBUF) with selectable 2.048 V / 2.5 V / 2.9 V outputs - all calibrated and specified across –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 with FPU and DSP extensions, enabling floating-point math and signal processing without software emulation |
| Clock Speed | 170 MHz max (213 DMIPS), supported by ART Accelerator for deterministic timing-critical loop execution |
| Flash / SRAM | 128 KB Flash with ECC and PCROP; 32 KB total SRAM (22 KB main + 10 KB CCM SRAM on instruction/data bus) |
| Analog Peripherals | 2× 12-bit ADCs (23-channel, 0.25 µs), 4× 12-bit DACs (2 buffered external @ 1 MSPS), 3× op-amps, 4× comparators |
| Math Accelerators | CORDIC engine for sin/cos/tan/arctan and FMAC for FIR/IIR filter computation - offloads CPU in motor and power control |
| Communication | FDCAN (flexible data-rate), 4× USART, 3× SPI, 3× I²C, LPUART, SAI, USB FS with LPM/BCD, and UCPD for USB Type-C™ PD negotiation |
| Power & Temp | VDD/VDDA: 1.71–3.6 V; operating range: –40°C to +85°C; low-power modes include Stop 0 (1.1 µA), Standby (0.5 µA), and Shutdown (20 nA) |
Pinout & Package
STM32G431KBT6TR uses a UFQFPN32 (5 × 5 mm, 0.5 mm pitch) package with 32 pins, optimized for space-constrained industrial and portable applications. Pin functions are validated per ST's DS12589 Rev 6, Section 4.1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA | Core & analog supply | Separate 1.71–3.6 V domains enable clean analog operation and flexible power sequencing |
| VSS, VSSA | Digital & analog ground | Independent grounding reduces noise coupling between digital switching and precision analog circuits |
| PA0–PA15, PB0–PB15 | General-purpose I/O | Up to 26 pins support 5 V tolerance; all mappable to EXTI for wake-up or event-driven response |
| PA1, PA2, PA3 | ADC1_IN1, ADC1_IN2, ADC1_IN3 | Dedicated analog inputs with hardware oversampling support up to 16-bit effective resolution |
| PA4, PA5 | DAC1_OUT1, DAC1_OUT2 | Buffered 12-bit outputs capable of 1 MSPS, suitable for closed-loop reference generation or waveform synthesis |
| PA8, PA11, PA12 | MCO, USB_DM, USB_DP | Direct USB 2.0 full-speed interface with built-in transceivers and LPM support - no external PHY required |
| PA13, PA14 | SWDIO, SWCLK | Serial Wire Debug interface enables non-intrusive real-time debugging and flash programming |
| NRST | Active-low reset | Internal POR/PDR/BOR plus programmable voltage detector (PVD) allow robust system-level reset management |
Key Features
| Feature | Design Value |
|---|---|
| CORDIC accelerator | Hardware trigonometric computation reduces CPU load in motor FOC and sensor fusion algorithms |
| FMAC unit | Configurable 32-bit filter engine accelerates real-time FIR/IIR filtering for power converter current/voltage regulation |
| VREFBUF | Internally buffered reference with three factory-calibrated outputs (2.048 V/2.5 V/2.9 V) eliminates need for external precision references |
| UCPD peripheral | Integrated USB Type-C™ Power Delivery controller handles CC line monitoring, PD message parsing, and VBUS control - no companion IC needed |
| Advanced timers | Two 16-bit advanced motor control timers (TIM1/TIM8) with dead-time insertion, emergency stop, and complementary PWM outputs for 3-phase inverter drives |
Applications
| Industrial Motor Control | Digital Power Supply |
|---|---|
Use Scenario: Field-oriented control (FOC) of BLDC/PMSM motors in HVAC blowers and pump drives. IC Role / Device Role / Timing Role: Main controller executing real-time FOC loops, ADC sampling, PWM generation, and safety monitoring. Use Value: CORDIC + FMAC offload >60% of CPU cycles during vector math and current-loop filtering, enabling 20 kHz PWM switching with margin. | Use Scenario: Isolated AC/DC and DC/DC converters with adaptive voltage/current regulation and fault protection. IC Role / Device Role / Timing Role: Digital power controller managing feedback loops, soft-start, overvoltage/overcurrent shutdown, and communication via PMBus. Use Value: Dual 12-bit ADCs sample primary/secondary side signals simultaneously; 12-bit DACs generate precise reference voltages for error amplifiers. |
| USB Type-C™ PD Sink | Portable Medical Sensor Hub |
Use Scenario: Battery-powered equipment negotiating 5–20 V input via USB-C port while managing battery charging and system power rails. IC Role / Device Role / Timing Role: UCPD controller handling PD contract negotiation, VBUS monitoring, and role swap detection. Use Value: Integrated UCPD eliminates discrete PD controller IC and associated level-shifting circuitry - reducing BOM count and PCB area by 35%. | Use Scenario: Wearable ECG/SpO₂ monitor aggregating analog sensor data, performing on-device signal conditioning, and transmitting via BLE or USB. IC Role / Device Role / Timing Role: Signal acquisition hub with PGA-configured op-amps, high-resolution ADC oversampling, and low-power timer-based sampling scheduling. Use Value: On-chip op-amps and VREFBUF enable direct connection of low-amplitude biopotential sensors without external front-end components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32G431CBT6 | LQFP48 package (48-pin), same core/peripherals but larger footprint and higher I/O count (up to 38 GPIOs) | Better suited for designs requiring more analog inputs, UARTs, or SPI interfaces than UFQFPN32 supports | Select when board layout allows larger package and additional I/Os are needed for expansion or redundancy |
| STM32G471KBT6 | Same UFQFPN32 package but with 512 KB Flash, 128 KB SRAM, and enhanced crypto (AES, PKA, RNG) | Required for secure boot, OTA firmware updates, or complex algorithmic workloads exceeding G431 memory limits | Choose when cryptographic acceleration or >128 KB Flash is mandatory - otherwise G431KBT6 offers optimal cost/performance balance |
Compared with STM32G431CBT6, the KBT6 saves board space and reduces thermal density; versus STM32G471KBT6, it trades crypto features and memory headroom for lower unit cost and simpler qualification in cost-sensitive industrial applications.
Availability
STM32G431KBT6TR is available at Aetrix Electronics and suitable for industrial motor control, digital power conversion, USB Type-C™ PD sink implementation, and portable medical sensor hubs requiring stable component supply across multi-year production cycles.
Supply support for STM32G431KBT6TR 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, analog-rich embedded applications - combining real-time control capability, mathematical acceleration, and USB-C power delivery integration in a single chip.
FAQ
What is the maximum operating temperature range for STM32G431KBT6TR?
The device is rated for industrial temperature range: –40°C to +85°C ambient. All electrical characteristics - including ADC/DAC accuracy, oscillator stability, and Flash write endurance - are guaranteed across this range per DS12589 Rev 6, Section 5.3.1. Thermal derating is not required below 105°C junction temperature.
Does STM32G431KBT6TR support hardware encryption?
No - unlike the G47x series, the G431KBT6TR does not integrate AES, PKA, or HASH accelerators. It includes only a True Random Number Generator (RNG) and CRC calculation unit. Secure firmware updates rely on PCROP and securable memory areas rather than cryptographic engines.
Can the internal op-amps be used as instrumentation amplifiers?
Yes - all three op-amps support programmable-gain amplifier (PGA) mode with gain settings from 1× to 16×, and their inputs/outputs are fully accessible via dedicated pins (e.g., OPAMP1_VINP, OPAMP1_VOUT). External resistors can configure differential gain stages, though dedicated instrumentation amplifier topology requires external components.
Is the UCPD peripheral functional without external transceivers?
Yes - the UCPD block integrates CC line drivers/receivers, VBUS discharge control, and PD protocol state machine. Only passive components (CC pull-up/down resistors, VBUS sense divider) are required; no external transceiver IC is needed for basic USB-C sink operation or PD negotiation up to 100 W.
STM32G431KBT6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 32-LQFP
- Series:
- STM32G4
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit
- Speed:
- 170MHz
- Connectivity:
- CANbus, I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT
- Number of I/O:
- 26
- 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 11x12b SAR; D/A 4x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32G431KBT6TR FAQ
1.How can I place an order for STM32G431KBT6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32G431KBT6TR 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 STM32G431KBT6TR reliable?
The price and inventory of STM32G431KBT6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32G431KBT6TR is usually 5 days.
3.What payment methods are accepted for STM32G431KBT6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32G431KBT6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32G431KBT6TR?
STM32G431KBT6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32G431KBT6TR 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 STM32G431KBT6TR?
For technical support, including STM32G431KBT6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32G431KBT6TR requirements.
6.How does Aetrix verify that STM32G431KBT6TR is sourced from the original manufacturer or authorized distributors?
All STM32G431KBT6TR 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 STM32G431KBT6TR meets industry standards.
7.What is the process for return or replacement of STM32G431KBT6TR?
All STM32G431KBT6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32G431KBT6TR, 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 STM32G431KBT6TR part is unused and in its original packaging.
Return procedure for STM32G431KBT6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32G431KBT6TR Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
