STMicroelectronics STM32G441KBU6

Overview

STM32G441KBU6 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 (1 MSPS buffered), dual 16-bit ADCs (0.25 µs conversion), four rail-to-rail comparators, three operational amplifiers, and hardware math accelerators (CORDIC, FMAC). It targets motor control and industrial sensing systems requiring real-time signal processing and precision analog I/O.

For engineers reviewing the STM32G441KBU6 datasheet, STM32G441KBU6 pinout, STM32G441KBU6 application, or STM32G441KBU6 equivalent, key selection criteria include its 170 MHz Cortex-M4+FPU core, 128 KB Flash with PCROP security, 16-bit ADC oversampling capability, FDCAN 2.0B support, and UFQFPN32 (5 × 5 mm) package with 32 pins - all critical for compact, high-performance embedded control designs.

Technical Context

The STM32G441KBU6 implements an Adaptive Real-Time (ART) Accelerator enabling zero-wait-state execution from Flash at 170 MHz, paired with a Memory Protection Unit (MPU) and DSP instruction set. Its analog subsystem integrates two independent 16-bit ADCs with hardware oversampling (up to 16×), four ultra-fast comparators with programmable hysteresis, and three op-amps configurable in PGA mode with external gain-setting resistors.

Digital connectivity includes one FDCAN controller (flexible data-rate), three I²C interfaces (Fast Mode Plus, 1 Mbit/s), four USART/UARTs (with LIN/IrDA support), one LPUART, three SPIs (two with I²S multiplexing), USB 2.0 FS with LPM/BCD, and a dedicated UCPD interface for USB Type-C™ power delivery negotiation - all managed via a multi-AHB interconnect matrix and 12-channel DMA controller.

Key Specifications

Pinout & Package

STM32G441KBU6 is housed in a 32-pin Ultra-Fine Pitch Quad Flat No-lead (UFQFPN32) package measuring 5 × 5 mm with 0.5 mm pitch, optimized for space-constrained industrial and motor control applications. The package supports reflow soldering and provides exposed thermal pad for enhanced thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G431KBU6 and STM32F303K8U6, the STM32G441KBU6 delivers 2.4× higher DMIPS, integrated USB-C PD controller, and dual oversampling-capable ADCs - making it uniquely suited for next-generation compact industrial controllers demanding both compute density and analog fidelity.

Availability

STM32G441KBU6 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, USB-C power adapters, and PLC I/O modules requiring stable component supply, long-term lifecycle assurance, and full production traceability.

Supply support for STM32G441KBU6 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, sensors, and analog devices for industrial, automotive, and consumer markets.

The STM32G4 series targets high-efficiency digital power conversion and precision analog control, combining Cortex-M4 performance with hardware math acceleration and rich mixed-signal peripherals - specifically engineered for motor drives, digital power supplies, and intelligent sensing edge nodes.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating of the STM32G441KBU6?

The STM32G441KBU6 operates at up to 170 MHz with an integer performance rating of 213 DMIPS, measured using the Dhrystone 2.1 benchmark under conditions of zero-wait-state Flash execution enabled by the ART Accelerator. This performance level is sustained across the full industrial temperature range (–40°C to +85°C) with VDD = 3.3 V.

Does the STM32G441KBU6 support USB Type-C™ Power Delivery negotiation?

Yes - the STM32G441KBU6 integrates a dedicated USB Type-C™ / Power Delivery controller (UCPD) peripheral compliant with USB PD 3.0 specification. It includes physical layer transceivers, BMC encoding/decoding logic, and protocol state machine, enabling full PD contract negotiation (voltage/current selection, role swap, VCONN control) without external UCPD ICs.

How many analog-to-digital converter channels does the STM32G441KBU6 provide, and what is their effective resolution with oversampling?

The device features two independent 12-bit ADCs supporting up to 23 external channels total. With hardware oversampling (up to 16×), effective resolution reaches 16 bits at 100 kSPS or 14 bits at 500 kSPS. Conversion time is 0.25 µs per sample, and the ADCs share a common 3.6 V input range with selectable prescalers and injected/conversion sequences.

What low-power modes are supported, and what is the typical current draw in shutdown mode?

The STM32G441KBU6 supports Sleep, Stop, Standby, and Shutdown modes. In Shutdown mode with RTC and backup registers disabled, typical current consumption is 30 nA at 25°C and 1.8 V supply. With RTC running from VBAT, current rises to 300 nA. All low-power modes retain SRAM content and allow wake-up via EXTI lines, RTC alarm, or FDCAN activity.