STMicroelectronics STM32G431K6T6

Overview

STM32G431K6T6 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), three rail-to-rail op-amps, and CORDIC/FMAC math accelerators - deployed in motor control, digital power conversion, and industrial sensor interface systems.

For engineers reviewing the STM32G431K6T6 datasheet, STM32G431K6T6 pinout, STM32G431K6T6 application, or STM32G431K6T6 equivalent, key selection criteria include its 48-pin UFQFPN package, 170 MHz real-time performance with ART Accelerator, FDCAN support for automotive-grade communication, and hardware-accelerated trigonometric filtering for closed-loop control algorithms.

Technical Context

The STM32G431K6T6 implements an Arm Cortex-M4 core with floating-point unit and Memory Protection Unit (MPU), paired with ST's Adaptive Real-time Accelerator (ART) enabling zero-wait-state execution from Flash at 170 MHz. Its interconnect matrix routes 14 timers-including two 16-bit advanced motor-control timers with dead-time generation-and supports concurrent high-speed analog acquisition via dual ADCs with hardware oversampling.

It integrates dedicated hardware accelerators: CORDIC for real-time sine/cosine/arctan computation and FMAC for FIR/IIR filter execution, both accessible via DMA-triggered sequences. The analog subsystem includes three user-configurable op-amps (PGA mode supported), four ultra-fast comparators, and VREFBUF with selectable 2.048 V / 2.5 V / 2.9 V outputs - all synchronized to the same clock domain for deterministic timing in control loops.

Key Specifications

Pinout & Package

STM32G431K6T6 uses the UFQFPN48 (7 × 7 mm) package with 48 terminals, designed for reflow-compatible assembly and thermal efficiency in compact motor control and power supply applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G431K8T6, the K6T6 offers identical peripheral functionality at lower Flash density and cost, while STM32F303K8T6 lacks hardware math acceleration and operates at half the clock speed - making it unsuitable for demanding FOC or digital power applications requiring sub-microsecond latency.

Availability

STM32G431K6T6 is available at Aetrix Electronics and suitable for motor control systems, digital power converters, industrial sensor nodes, and USB-C PD implementations requiring stable component supply, long-term lifecycle assurance, and full traceability.

Supply support for STM32G431K6T6 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, specializing in microcontrollers, power management, sensors, and automotive ICs with strong industrial and automotive qualification heritage.

The STM32G4 series targets high-efficiency digital power conversion and real-time motor control, integrating analog peripherals and math accelerators to replace discrete signal-chain components in space- and cost-constrained applications.

FAQ

What is the maximum operating temperature range for STM32G431K6T6?

The STM32G431K6T6 is qualified for industrial operation from –40 °C to +85 °C ambient temperature, with full electrical specifications guaranteed across this range. Its thermal resistance (θ_JA) is 41.5 °C/W in the UFQFPN48 package, requiring minimum 2 cm² copper pour for sustained 170 MHz operation at 85 °C ambient.

Does STM32G431K6T6 support hardware encryption or secure boot?

No - the STM32G431K6T6 does not include cryptographic accelerators (AES, PKA) or secure boot ROM. It supports basic security features like Read-Out Protection (RDP), Write Protection (WRP), and Proprietary Code Read-Out Protection (PCROP), but lacks hardware TRNG or secure key storage required for certified secure boot implementations.

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

Yes - all three op-amps support programmable gain amplifier (PGA) mode with gains from 1× to 16×, and their inputs/outputs are fully accessible via dedicated pins (e.g., OPAMP1_VINP, OPAMP1_VOUT). This allows direct configuration as single-ended or differential-input PGAs for precision sensor signal conditioning without external components.

Is the FDCAN peripheral compatible with classical CAN 2.0B?

Yes - the FDCAN controller in STM32G431K6T6 operates in legacy CAN 2.0B mode at up to 1 Mbps, and also supports ISO 11898-1:2015 Flexible Data-Rate (CAN FD) with bit rates up to 5 Mbps in the data phase. Both modes share the same register map and interrupt structure, enabling seamless migration from classical CAN to CAN FD.