STMicroelectronics STM32G041K6T6

Overview

STM32G041K6T6 from STMicroelectronics is an Arm® Cortex®-M0+ 32-bit microcontroller with 64 KB Flash, 8 KB SRAM, 12-bit ADC (0.4 µs conversion), AES-128/256 hardware encryption, and dual USARTs supporting LIN/IrDA/ISO7816 - deployed in industrial sensor nodes, smart metering front-ends, and battery-powered IoT edge controllers.

For engineers reviewing the STM32G041K6T6 datasheet, STM32G041K6T6 pinout, STM32G041K6T6 application, or STM32G041K6T6 equivalent, key selection criteria include its 64 MHz max CPU frequency, 1.7–3.6 V supply range, 11 timers (including two low-power 16-bit), RTC with periodic wakeup from Stop/Standby, and 5 V-tolerant GPIOs for mixed-voltage system interfacing.

Technical Context

The device integrates a Cortex-M0+ core with MPU, supporting TrustZone-like memory protection via securable flash area and HW parity on SRAM. Its clock system combines 4–48 MHz HSE, 32 kHz LSE with calibration, and ±1% internal 16 MHz RC with PLL - enabling precise timing for real-time control loops and secure boot.

Peripheral interconnect uses a hierarchical AHB/APB bus matrix with DMA request multiplexer (DMAMUX) and flexible alternate function mapping across five I/O ports. The 12-bit ADC supports hardware oversampling up to 16-bit resolution and operates across full 0–3.6 V input range, while two I²C interfaces include Fast-mode Plus (1 Mbit/s) with extra current sink for robust bus driving.

Key Specifications

Pinout & Package

STM32G041K6T6 is housed in a 32-pin UFQFPN package (5 × 5 mm, 0.5 mm pitch), compliant with ECOPACK2 environmental standards and rated for -40°C to 105°C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G031K6T6, this part adds AES-256 and larger securable flash for firmware IP protection; versus STM32F072CBT6, it trades USB for lower power, smaller footprint, and modern security features - making it optimal for secure, battery-constrained edge nodes.

Availability

STM32G041K6T6 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy metering, and IoT edge controllers requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for STM32G041K6T6 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 ICs, sensors, and analog components for industrial, automotive, and consumer markets.

The STM32G0 series targets cost-sensitive, power-constrained applications demanding security and rich peripheral integration - optimized for smart home, industrial automation, and battery-powered IoT endpoints.

FAQ

What is the maximum operating temperature for STM32G041K6T6?

The STM32G041K6T6 is qualified for operation from –40°C to +105°C ambient temperature, as specified in ST's DS12993 Rev 4 datasheet Section 5.3.1. This extended grade supports deployment in industrial enclosures and outdoor metering housings without forced cooling.

Does STM32G041K6T6 support USB connectivity?

No, the STM32G041K6T6 does not integrate a USB peripheral. It provides two USARTs (one with ISO7816/LIN/IrDA), two I²C, two SPI, and LPUART - but no USB PHY or controller. For USB-based designs, consider STM32G071 or STM32F072 families instead.

How many I/O pins are 5 V-tolerant on this device?

According to the pin description table (Section 4 of DS12993), 38 of the 44 GPIOs on STM32G041K6T6 are 5 V-tolerant - specifically all pins except those designated as analog inputs (e.g., ADC channels) or dedicated system functions (e.g., NRST, BOOT0). This enables direct interfacing with 5 V logic without external level shifters.

Can the internal 16 MHz RC oscillator be used as the system clock without calibration?

Yes, the HSI16 oscillator can serve as the system clock source without external calibration, with factory-trimmed accuracy of ±1% over temperature and voltage. It supports PLL multiplication and is the default clock after reset - eliminating crystal cost and board space in non-precision timing applications.