STMicroelectronics STM32L011G4U7

Overview

STM32L011G4U7 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller in UFQFPN20 (3×3 mm) package, featuring 16 KB Flash with ECC, 2 KB SRAM, 512 B EEPROM, 12-bit ADC (1.14 Msps), and dual ultra-low-power comparators. It operates from 1.65–3.6 V across –40 to +125 °C and delivers 76 µA/MHz in Run mode - ideal for battery-powered sensor nodes and smart metering endpoints.

For engineers reviewing the STM32L011G4U7 datasheet, STM32L011G4U7 pinout, STM32L011G4U7 application, or STM32L011G4U7 equivalent, key selection criteria include standby current (0.23 µA), RTC-enabled Stop mode (0.54 µA), 5 µs Flash wakeup time, and 23 I/Os with 5V tolerance - all critical for energy-constrained embedded designs requiring long-term autonomy and mixed-voltage interfacing.

Technical Context

The STM32L011G4U7 integrates a Cortex-M0+ core running up to 32 MHz with dynamic voltage scaling, supported by multiple clock sources: 16 MHz factory-trimmed HSI (±1%), 32 kHz LSE for RTC calibration, and a multispeed MSI (65 kHz–4.2 MHz). Its low-power architecture includes five operational modes - Run, Sleep, Low-power Run, Stop, and Standby - each with distinct power/performance tradeoffs validated down to 1.65 V supply.

Peripherals are tightly coupled via an interconnect matrix enabling concurrent DMA transfers across ADC, USART, SPI, I²C, and timers. The device supports serial wire debug (SW-DP), pre-programmed USART/SPI bootloader, and hardware CRC - confirming its role as a self-contained, field-upgradable node controller rather than a peripheral co-processor.

Key Specifications

Pinout & Package

STM32L011G4U7 uses the UFQFPN20 (3×3 mm, 0.5 mm pitch) package with 20 terminals, optimized for space-constrained PCB layouts in wearables and IoT edge nodes.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L011G4U7, STM32L031F6P6 offers more memory but sacrifices compactness and 5V tolerance, while EFM32ZG108F16 trades verified RTC calibration and embedded EEPROM for marginally lower deep-sleep current - making STM32L011G4U7 optimal for size-, cost-, and longevity-sensitive designs.

Availability

STM32L011G4U7 is available at Aetrix Electronics and suitable for smart utility metering, wireless sensor nodes, medical wearable patches, and asset tracking beacons requiring stable component supply across multi-year production cycles.

Supply support for STM32L011G4U7 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 automotive-grade components since 1987.

The STM32L0 series targets ultra-low-power embedded applications, emphasizing energy efficiency, integrated peripherals, and robust security features - specifically engineered for battery-operated devices where runtime, reliability, and minimal external components are paramount.

FAQ

What is the maximum operating frequency of the STM32L011G4U7?

The STM32L011G4U7 runs at up to 32 MHz using its internal 16 MHz HSI oscillator with PLL multiplication or an external clock source. This frequency is fully supported across the entire 1.65–3.6 V supply range and –40 to +125 °C temperature range, with 0.95 DMIPS/MHz performance confirmed in production data.

Does the STM32L011G4U7 support hardware encryption or secure boot?

No - the STM32L011G4U7 does not include hardware cryptographic accelerators (AES, SHA, PKA) or secure boot ROM. It relies on software-based security primitives and external secure elements for advanced authentication or encrypted firmware updates, consistent with its entry-level ultra-low-power positioning.

Can the 512 B EEPROM be used for storing calibration coefficients across power cycles?

Yes - the 512 B data EEPROM includes ECC protection and guarantees 100,000 write/erase cycles with 20-year data retention at 85 °C. It is explicitly designed for nonvolatile storage of calibration values, device-specific parameters, or field-updated configuration data without requiring external memory.

Is the UFQFPN20 package RoHS-compliant and halogen-free?

Yes - the STM32L011G4U7 in UFQFPN20 packaging meets RoHS Directive 2011/65/EU and is certified ECOPACK®2, meaning it is lead-free, halogen-free, and compliant with JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) for standard SMT assembly processes.