STMicroelectronics STM32G431MBT6

Overview

STM32G431MBT6 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), four rail-to-rail comparators, three op-amps, and CORDIC/FMAC math accelerators - deployed in motor control, digital power conversion, and industrial sensing systems.

For engineers reviewing the STM32G431MBT6 datasheet, STM32G431MBT6 pinout, STM32G431MBT6 application, or STM32G431MBT6 equivalent, key selection criteria include its 48-pin UFQFPN package, FDCAN support, 5 V-tolerant I/Os, low-power timer with ultra-low wake-up latency, and hardware-accelerated trigonometric filtering for real-time closed-loop control.

Technical Context

The STM32G431MBT6 implements a tightly coupled Arm Cortex-M4 core with FPU and 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 ADCs with hardware oversampling (up to 16-bit effective resolution), four ultra-fast comparators with programmable hysteresis, and three op-amps configurable as programmable-gain amplifiers (PGA) with all terminals accessible-enabling sensor signal conditioning and current/voltage feedback in single-chip power stage designs.

Key Specifications

Pinout & Package

STM32G431MBT6 uses a 48-pin UFQFPN (7 × 7 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are validated per STMicroelectronics DS12589 Rev 6, Section 4.3 (UFQFPN48 pinout description) and Table 12 (pin definition).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G431KBT6, the MBT6 adds UCPD and SAI in a compact 48-pin package ideal for USB-C PD endpoints; versus STM32G474RET6, it delivers optimal analog/motor control capability at lower cost and thermal density without crypto overhead.

Availability

STM32G431MBT6 is available at Aetrix Electronics and suitable for industrial motor control, digital power conversion, smart sensor nodes, and USB-C power delivery endpoints requiring stable component supply across extended production lifecycles.

Supply support for STM32G431MBT6 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, specializing in microcontrollers, power management, sensors, and automotive ICs.

The STM32G4 series targets high-performance, analog-rich embedded applications - designed specifically for digital power, motor control, and industrial automation where real-time math acceleration and precision analog integration are critical.

FAQ

What is the maximum operating frequency and associated performance metric of the STM32G431MBT6?

The STM32G431MBT6 operates at up to 170 MHz with an integer performance rating of 213 DMIPS (Dhrystone MIPS). This is achieved using the ART Accelerator for zero-wait-state Flash execution and includes full DSP instruction support and single-cycle MAC operations enabled by the FPU - verified per ST's DS12589 Rev 6 characterization across the industrial temperature range (–40°C to +85°C).

Does the STM32G431MBT6 support hardware cryptographic functions?

No, the STM32G431MBT6 does not include dedicated cryptographic accelerators such as AES, SHA, or PKA engines. It features a true random number generator (RNG) and 96-bit unique ID for basic entropy and device identification, but encryption/decryption must be implemented in software or via external secure elements - unlike the G47x subfamily which integrates AES-128 and HASH accelerators.

How many analog-to-digital converter (ADC) instances are integrated, and what are their key resolution and speed specifications?

The STM32G431MBT6 integrates two independent 12-bit ADCs (ADC1 and ADC2), each capable of up to 16-bit effective resolution via hardware oversampling. Each ADC achieves 0.25 µs conversion time (4 MSPS sampling rate) across up to 23 input channels, with full-scale range of 0 to 3.6 V and support for injected/conversion sequences - confirmed in Section 3.18 of DS12589 Rev 6.

What is the function of the UCPD peripheral, and which pins are dedicated to it on the STM32G431MBT6?

The UCPD (USB Type-C™ and Power Delivery) peripheral handles physical layer signaling on the CC1 and CC2 lines for USB-C cable detection, orientation, and power contract negotiation. On the STM32G431MBT6 in UFQFPN48, UCPD is routed exclusively to pins PF0 (CC1) and PF1 (CC2), both supporting BMC encoding/decoding and VCONN switching - detailed in Section 3.35 and Table 12 of the official datasheet.