STMicroelectronics STM32L011G4U6

Overview

STM32L011G4U6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller in UFQFPN20 (3×3 mm) package, featuring 16 KB Flash, 2 KB SRAM, 512 B EEPROM with ECC, 12-bit ADC (1.14 Msps), and operation down to 1.65 V. It delivers 0.95 DMIPS/MHz performance and supports 0.23 µA Standby mode with 2 wakeup pins - ideal for battery-powered sensor nodes and smart metering endpoints.

For engineers reviewing the STM32L011G4U6 datasheet, STM32L011G4U6 pinout, STM32L011G4U6 application, or STM32L011G4U6 equivalent, key selection criteria include ultra-low active/standby current, integrated EEPROM retention, 5V-tolerant I/Os (23 of 28), RTC + backup registers, and SWD debug support for constrained embedded designs.

Technical Context

The device implements a single-core Arm Cortex-M0+ running at up to 32 MHz, with dynamic voltage scaling enabling multiple low-power operating modes (Run, Sleep, Low-power Run, Stop, Standby). Its clock system integrates factory-trimmed 16 MHz HSI (±1%), 37 kHz LSI, 65 kHz–4.2 MHz MSI, 32 kHz LSE for RTC, and PLL for CPU clock multiplication.

Analog subsystem includes one 12-bit ADC with 10-channel multiplexing, two ultra-low-power comparators (with window mode and wake-up capability), internal temperature sensor, and VREFINT reference - all functional down to 1.65 V supply. Memory protection includes sector-level Flash/ECC and 20-byte backup registers.

Key Specifications

Pinout & Package

STM32L011G4U6 is housed in a 20-pin UFQFPN (Ultra Thin Fine Pitch Quad Flat No-lead) package measuring 3 × 3 mm with 0.5 mm pitch, optimized for space-constrained portable and wearable applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L011G4U6, STM32L031K6T6 offers greater memory headroom at the cost of size and pin compatibility, while EFM32ZG222F32 achieves lower deep-sleep current but sacrifices on-chip nonvolatile storage and interface flexibility - making STM32L011G4U6 optimal for compact, self-contained, battery-powered endpoints requiring integrated EEPROM and mixed-voltage interoperability.

Availability

STM32L011G4U6 is available at Aetrix Electronics and suitable for smart metering, wearable health monitors, industrial wireless sensors, and asset tracking beacons requiring stable component supply across long-lifecycle deployments.

Supply support for STM32L011G4U6 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 products for industrial, automotive, and consumer markets.

The STM32L0 Access line targets ultra-low-power embedded applications demanding extended battery life, integrated nonvolatile memory, and robust operation from 1.65 V - emphasizing minimal BOM count and simplified system architecture.

FAQ

What is the maximum operating frequency and core type of STM32L011G4U6?

The STM32L011G4U6 features an Arm Cortex-M0+ core rated for up to 32 MHz operation. It delivers 0.95 DMIPS/MHz performance and supports dynamic voltage scaling to optimize power versus speed. The core includes a single-cycle multiplier, nested vectored interrupt controller (NVIC), and hardware divide instruction - all confirmed in ST's DocID027973 Rev 5 datasheet Section 3.3.

Does STM32L011G4U6 support in-circuit debugging and programming?

Yes, STM32L011G4U6 supports Serial Wire Debug (SWD) via dedicated PA13 (SWDIO) and PA14 (SWCLK) pins. This 2-pin interface enables full read/write memory access, breakpoint setting, and real-time variable inspection using ST-LINK/V2 or compatible debug probes - documented in Section 3.17 and Pin Definitions Table 13 of the datasheet.

How many I/O pins are 5V tolerant, and which ones?

23 of the 28 general-purpose I/Os on STM32L011G4U6 are 5V tolerant: PA0–PA9, PA11–PA15, PB0–PB1, and PB3–PB10. This is explicitly specified in Section 2.1 (Device overview) and Table 13 (Pin definitions) of the datasheet. Pins NRST, BOOT0, and oscillator inputs are not 5V tolerant.

What are the key low-power modes and their typical current consumption?

Key low-power modes include Standby (0.23 µA, 2 wakeup pins), Stop (0.29 µA, 16 wakeup lines), and Stop + RTC + 2 KB RAM retention (0.54 µA). All values are measured at 3.0 V and 25 °C per Section 6.3.29–6.3.30 of the datasheet. Wake-up time from Stop is ≤5 µs when exiting to Flash execution.