STMicroelectronics STM32G041J6M6

Overview

STM32G041J6M6 from STMicroelectronics is an Arm® Cortex®-M0+ 32-bit microcontroller with 32 KB Flash, 8 KB SRAM, 1.7–3.6 V operation, -40°C to 85°C temperature range, and integrated AES-128/256 encryption. It delivers 64 MHz CPU performance while supporting real-time motor control via its 11 timers-including one 128 MHz-capable advanced timer-and is deployed in smart metering endpoints requiring secure, low-power firmware execution.

For engineers reviewing the STM32G041J6M6 datasheet, STM32G041J6M6 pinout, STM32G041J6M6 application, or STM32G041J6M6 equivalent, key selection criteria include its 32-pin UFQFPN package, dual USARTs with LIN/IrDA support, hardware RNG, 12-bit ADC with 16-channel input, and SWD debug interface for embedded firmware development.

Technical Context

The STM32G041J6M6 integrates a Cortex-M0+ core with Memory Protection Unit (MPU), enabling secure partitioning of code and data spaces. Its clock system combines internal RC oscillators (16 MHz ±1%, 32 kHz ±5%) with external crystal support (4–48 MHz HSE, 32.768 kHz LSE) and a PLL for precise frequency synthesis up to 64 MHz.

Peripherals are interconnected via a multi-layer AHB/APB bus matrix, allowing concurrent DMA transfers and peripheral access without contention. The 5-channel DMA controller supports flexible mapping to all major peripherals-including ADC, USART, SPI, and timers-enabling efficient sensor data acquisition and communication offload.

Key Specifications

Pinout & Package

STM32G041J6M6 is housed in a 32-pin Ultra-Fine Pitch Quad Flat No-lead (UFQFPN32) package (A0B8), measuring 5 × 5 mm with 0.5 mm pitch and exposed thermal pad. This RoHS-compliant, ECOPACK2-qualified package supports automated optical inspection and high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G031J6M6, the G041J6M6 adds AES/RNG and expanded timers without increasing footprint; versus STM32G071JB6, it trades USB and memory for lower cost and smaller form factor-ideal for space-constrained, security-aware edge nodes.

Availability

STM32G041J6M6 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home appliance control, and portable medical diagnostics requiring stable component supply across long-lifecycle deployments.

Supply support for STM32G041J6M6 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 components for industrial, automotive, and consumer markets.

The STM32G0 series targets cost-sensitive, ultra-low-power embedded applications demanding security, rich analog integration, and seamless toolchain compatibility-optimized for rapid development of certified IoT edge devices.

FAQ

What is the maximum operating frequency and supported voltage range?

The STM32G041J6M6 operates at up to 64 MHz with a supply voltage range of 1.7 V to 3.6 V. Its internal 16 MHz RC oscillator is factory-trimmed to ±1% accuracy and can be boosted via PLL to achieve full-speed operation without external crystals-critical for reducing BOM cost in space-constrained designs.

Does this MCU support hardware encryption and secure boot?

Yes. It integrates a dedicated AES-128/256 hardware accelerator and true random-number generator (RNG), enabling fast encryption/decryption and cryptographically secure key generation. Combined with Flash readout protection (RDP) and securable memory areas, it supports secure boot verification and firmware update authentication per IEC 62443-3-3 guidelines.

How many I/O pins are available, and what are their voltage tolerances?

The UFQFPN32 package provides 29 usable GPIOs (PA0–PA15, PB0–PB15, PF0–PF1). At least 20 pins are 5 V-tolerant on input-even when VDD = 1.7 V-allowing direct interfacing with legacy 5 V logic, RS-232 transceivers, or industrial sensors without level shifters.

What low-power modes are supported, and what is the lowest active current?

It supports Sleep, Stop, Standby, and Shutdown modes. In Stop 0 mode with RTC enabled and ultra-low-power regulator active, typical current is ≤0.35 µA at 25°C. Wakeup latency is <5 µs from Stop via EXTI or RTC alarm-enabling sub-second sensor polling cycles in battery-powered applications.