STMicroelectronics STM32L011D3P6

Overview

STM32L011D3P6 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 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 STM32L011D3P6 datasheet, STM32L011D3P6 pinout, STM32L011D3P6 application, or STM32L011D3P6 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 - critical for energy-constrained industrial and IoT edge devices.

Technical Context

The STM32L011D3P6 implements a single-core Arm Cortex-M0+ running at up to 32 MHz, supported by multiple clock sources: factory-trimmed 16 MHz HSI (±1%), 32 kHz LSE for RTC, and multispeed MSI (65 kHz–4.2 MHz). Its power architecture includes dynamic voltage scaling, five low-power modes (Run, Sleep, Low-power Run/Sleep, Stop, Standby), and brownout reset with five programmable thresholds.

Peripherals are interconnected via a dedicated AHB/APB matrix supporting concurrent DMA transfers. The 12-bit ADC supports up to 10 channels with hardware oversampling and operates down to 1.65 V supply; two comparators feature window mode and wake-up capability, also functional at 1.65 V - enabling robust analog sensing in wide-voltage battery systems.

Key Specifications

Pinout & Package

STM32L011D3P6 is housed in a 20-pin Ultra Thin Fine Pitch Quad Flat No-lead (UFQFPN20) package measuring 3 × 3 mm with 0.5 mm pitch. This RoHS-compliant, ECOPACK®2-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 ultra-low-power MCU applications.

Compared with STM32L011D3P6, STM32L031F4P6 adds USB at the cost of higher active/standby current and larger die area, while EFM32ZG222F32 trades EEPROM and ultra-low standby for more memory and peripheral integration - making STM32L011D3P6 optimal for minimal-footprint, EEPROM-reliant, coin-cell-powered designs.

Availability

STM32L011D3P6 is available at Aetrix Electronics and suitable for smart utility metering, wireless sensor nodes, industrial predictive maintenance modules, and medical wearable patches requiring stable component supply and long-term production continuity.

Supply support for STM32L011D3P6 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, MEMS, and automotive semiconductors since 1987.

The STM32L0 series targets ultra-low-power embedded applications, emphasizing sub-µA standby, integrated EEPROM, and robust analog peripherals for battery-operated industrial and consumer edge devices.

FAQ

What is the maximum operating frequency and core type of STM32L011D3P6?

The STM32L011D3P6 integrates an Arm Cortex-M0+ core rated for up to 32 MHz operation. Its performance is specified at 0.95 DMIPS/MHz, confirmed in ST's production datasheet (DocID027973 Rev 5). The core supports Thumb-2 instruction set and includes a single-cycle multiplier, enabling efficient execution of control algorithms in resource-constrained environments.

Does STM32L011D3P6 support hardware error correction for memory?

Yes - both the 16 KB Flash and 512 B EEPROM include built-in hardware ECC (Error Correction Code). This is implemented per ST's silicon design and verified in electrical characterization (Section 6.3.9 and 6.3.10 of DocID027973 Rev 5), correcting single-bit errors and detecting double-bit errors without software intervention or CPU overhead.

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

23 GPIOs are 5V tolerant, covering all pins in the PA0–PA9 and PB0–PB10 groups. This is explicitly stated in Section 2.1 (Device overview) and Table 2 of the datasheet, and electrically validated per I/O AC characteristics (Table 52) and static parameters (Table 50), allowing safe interfacing with 5V logic while operating from 1.8 V or higher supply.

What debug interface does STM32L011D3P6 provide, and what pins are used?

The device supports Serial Wire Debug (SW-DP) using dedicated PA13 (SWDIO) and PA14 (SWCLK) pins. This is documented in Section 3.17 and Figure 12 (Pin definitions) of DocID027973 Rev 5. No additional pins or configuration is required - SWD operates out-of-reset and remains functional across all low-power modes except Standby.