STMicroelectronics STM32L041F6P7

Overview

STM32L041F6P7 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller with 32 KB Flash, 8 KB SRAM, 1 KB EEPROM, 12-bit ADC (1.14 Msps), AES-128 hardware encryption, and operation down to 1.65 V. It delivers 0.6 µA Stop mode + RTC + 8 KB RAM retention and 76 µA/MHz active power efficiency, targeting battery-powered sensor nodes and smart metering endpoints.

For engineers reviewing the STM32L041F6P7 datasheet, STM32L041F6P7 pinout, STM32L041F6P7 application, or STM32L041F6P7 equivalent, key selection criteria include ultra-low standby current (0.23 µA), 32-pin UFQFPN package compatibility, integrated EEPROM with ECC, dual ultra-low-power comparators with wake-up capability, and support for ISO 7816/UART/I²C/SPI peripherals in constrained power budgets.

Technical Context

The STM32L041F6P7 implements a single-core Arm Cortex-M0+ running at up to 32 MHz with 0.95 DMIPS/MHz performance and dynamic voltage scaling across three operating ranges (1.65–3.6 V). Its low-power architecture integrates five distinct sleep modes-Run, Sleep, Low-power Run, Low-power Sleep, Stop, and Standby-with sub-µA retention states and 5 µs Flash wakeup latency.

Clock management includes multiple internal sources (HSI16 ±1%, LSI 37 kHz, MSI 65 kHz–4.2 MHz) plus external options (1–25 MHz HSE, 32 kHz LSE with RTC calibration), enabling precise timing control for real-time sensing and secure communication. The embedded AES engine operates independently via DMA, supporting authenticated encryption without CPU intervention.

Key Specifications

Pinout & Package

STM32L041F6P7 uses a 32-pin UFQFPN (5 × 5 mm, 0.5 mm pitch) package compliant with ECOPACK®2 environmental standards. This compact, near-chip-scale footprint supports high-density PCB layouts while maintaining thermal and electrical integrity in space-constrained designs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power MCU applications.

Compared with STM32L051K8U6, the STM32L041F6P7 trades Flash capacity for integrated AES security and retains identical low-power behavior; versus STM32L011F4P6, it doubles Flash and quadruples SRAM while adding EEPROM and enhanced analog peripherals - making it optimal for secure, data-logging edge nodes.

Availability

STM32L041F6P7 is available at Aetrix Electronics and suitable for smart metering, wireless sensor networks, medical wearables, and asset tracking applications requiring stable component supply across extended product lifecycles.

Supply support for STM32L041F6P7 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 devices for industrial, automotive, and consumer markets.

The STM32L0 series targets ultra-low-power embedded applications demanding multi-year battery life, robust security, and high integration - delivering Arm Cortex-M0+ performance with sub-µA static currents and embedded peripherals optimized for energy harvesting and intermittent operation.

FAQ

What is the maximum operating frequency of the STM32L041F6P7?

The STM32L041F6P7 operates at up to 32 MHz using its internal 16 MHz HSI oscillator with PLL multiplication or external clock sources. Its Arm Cortex-M0+ core achieves 0.95 DMIPS/MHz, delivering 30.4 DMIPS at full speed while maintaining ultra-low power consumption in all active modes.

Does the STM32L041F6P7 support hardware-accelerated cryptography?

Yes, it integrates a dedicated AES-128 hardware encryption engine that supports ECB, CBC, CTR, and GCM modes. The engine operates independently via DMA, enabling secure firmware updates and encrypted sensor data transmission without CPU involvement - reducing both latency and energy per cryptographic operation.

How many I/O pins are 5V tolerant on the STM32L041F6P7?

31 of the 38 general-purpose I/O pins are 5V tolerant, allowing direct interfacing with legacy 5V logic, industrial sensors, and display drivers without external level-shifting circuitry. This feature simplifies system design and reduces bill-of-materials cost in mixed-voltage environments.

What package type is used for the STM32L041F6P7?

The STM32L041F6P7 is packaged in a 32-pin UFQFPN (ultra thin fine pitch quad flat package) measuring 5 × 5 mm with 0.5 mm pitch. This RoHS-compliant, ECOPACK®2-qualified package supports automated assembly and offers excellent thermal performance for thermally constrained applications.