STMicroelectronics STM32G431K8T6TR

Overview

STM32G431K8T6TR 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 16-bit ADCs (0.25 µs conversion), 4 comparators, 3 op-amps, CORDIC/FMAC math accelerators, and FDCAN for industrial motor control and power conversion systems.

For engineers reviewing the STM32G431K8T6TR datasheet, STM32G431K8T6TR pinout, STM32G431K8T6TR application, or STM32G431K8T6TR equivalent, key selection criteria include its 48-pin UFQFPN package, 5 V-tolerant GPIOs, hardware parity on critical SRAM blocks, real-time deterministic execution via ART Accelerator, and USB Type-C™/UCPD support for embedded power delivery interfaces.

Technical Context

The STM32G431K8T6TR implements a tightly coupled Arm Cortex-M4 core with single-precision FPU and Memory Protection Unit (MPU), paired with ST's Adaptive Real-Time (ART) Accelerator 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 emergency stop-to peripherals without bus contention.

Analog subsystem integration includes dual independent 16-bit ADCs with hardware oversampling (up to 23 channels, 0–3.6 V range), four rail-to-rail comparators with window mode, three fully accessible op-amps configurable as programmable-gain amplifiers (PGA), and a voltage reference buffer (VREFBUF) supporting 2.048 V, 2.5 V, and 2.9 V outputs for precision sensor signal chains.

Key Specifications

Pinout & Package

STM32G431K8T6TR uses the UFQFPN48 (7 × 7 mm) package with 48 terminals, optimized for thermal performance and board-level density in motor control and power conversion designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G431K8T6TR, the CB variant trades compactness for manufacturability, while the G474 adds memory and security at higher cost-making the K8T6 optimal for cost-sensitive, space-constrained motor control where 128 KB Flash suffices.

Availability

STM32G431K8T6TR is available at Aetrix Electronics and suitable for industrial motor drives, smart power supplies, USB-C PD systems, and condition monitoring sensors requiring stable component supply across long production lifecycles.

Supply support for STM32G431K8T6TR 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, analog, and MEMS technologies for industrial, automotive, and consumer markets.

The STM32G4 series targets high-performance, cost-optimized digital power and motor control applications, integrating math accelerators, rich analog front-ends, and robust communication interfaces into a single chip for real-time embedded systems.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating of the STM32G431K8T6TR?

The STM32G431K8T6TR operates at up to 170 MHz with an integer performance rating of 213 DMIPS, measured using the Dhrystone 2.1 benchmark. This performance level is sustained with zero-wait-state execution from Flash memory thanks to the integrated ART Accelerator, making it suitable for demanding real-time control tasks such as field-oriented motor control and digital power conversion.

Does the STM32G431K8T6TR support hardware-based cryptographic functions?

No, the STM32G431K8T6TR does not include dedicated cryptographic accelerators (e.g., AES, PKA, HASH). It features a True Random Number Generator (RNG) and CRC calculation unit, but lacks hardware encryption engines found in the STM32G474/G484 variants. For applications requiring certified cryptographic operations, ST recommends upgrading to the G474 line or implementing software-based libraries with appropriate security validation.

How many ADC channels and what resolution does the STM32G431K8T6TR support?

The STM32G431K8T6TR integrates two independent 16-bit analog-to-digital converters, each supporting up to 23 input channels with hardware oversampling. The effective resolution can reach 16 bits at 1 Msps or be extended to >18 bits at lower sampling rates via oversampling and decimation. Conversion range is 0 to 3.6 V, referenced to VREF+ or VDDA, and supports simultaneous sampling for multi-axis current sensing in motor control.

Is the STM32G431K8T6TR pin-compatible with other members of the STM32G431 family?

Yes, the STM32G431K8T6TR in UFQFPN48 is pin-compatible with other STM32G431x8 variants in the same package (e.g., STM32G431R8T6, STM32G431V8T6), sharing identical pin definitions and alternate function mappings. However, it is not pin-compatible with STM32G431x6 or xB variants due to differing Flash sizes and peripheral enablement, nor with LQFP48-packaged parts despite identical pin count - mechanical dimensions and thermal pad configuration differ.