STMicroelectronics STM32L011D3P6TR

Overview

STM32L011D3P6TR 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 STM32L011D3P6TR datasheet, STM32L011D3P6TR pinout, STM32L011D3P6TR application, or STM32L011D3P6TR equivalent, key selection criteria include verified ultra-low-power modes (Stop/Standby current), integrated EEPROM retention, 5V-tolerant I/O count (23 pins), and UART/SPI/I²C peripheral concurrency under 32 MHz max CPU clock.

Technical Context

The device implements a dual-voltage domain architecture with separate regulator and low-power logic, enabling dynamic voltage scaling across Run, Sleep, Low-power Run, and Stop modes. Its clock system integrates factory-trimmed 16 MHz HSI RC (+/-1%), 32 kHz LSE for RTC calibration, and PLL for CPU frequency up to 32 MHz.

Core peripherals include a 7-channel DMA controller servicing ADC, USART, SPI, I²C, and timers; two ultra-low-power comparators with window mode and wake-up capability; and a CRC calculation unit with 96-bit unique ID - all operating reliably across -40°C to +125°C.

Key Specifications

Pinout & Package

STM32L011D3P6TR uses the UFQFPN20 (3 × 3 mm, 0.5 mm pitch) package with 20 leads. This compact, leadless surface-mount package supports automated assembly and offers thermal performance suitable for space-constrained 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 STM32L011D3P6TR, STM32L031F4P6 trades memory capacity for enhanced peripheral concurrency, while EFM32ZG210F32 offers greater memory headroom at the expense of RTC crystal integration - making the D3P6TR optimal for cost-sensitive, crystal-dependent, long-life battery applications.

Availability

STM32L011D3P6TR is available at Aetrix Electronics and suitable for smart utility metering, wireless sensor nodes, portable medical devices, and industrial control edge nodes requiring stable component supply across extended product lifecycles.

Supply support for STM32L011D3P6TR 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.

The STM32L0 series targets ultra-low-power embedded applications, emphasizing sub-1 µA standby operation, integrated EEPROM, and robustness across extended temperature ranges - specifically engineered for energy-harvesting and battery-operated endpoints.

FAQ

What is the maximum operating frequency and corresponding power consumption in Run mode?

The STM32L011D3P6TR operates up to 32 MHz with dynamic voltage scaling. At 32 MHz and 3.3 V, typical Run mode current is 76 µA/MHz (2.43 mA total), measured with code executing from Flash and active peripherals. This value scales linearly with clock frequency and drops further in Low-power Run mode using reduced voltage domains.

Does STM32L011D3P6TR support hardware encryption or secure boot?

No - the STM32L011D3P6TR 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 authentication or encrypted firmware updates. For secure boot, ST recommends STM32L5 or STM32U5 series devices.

Can the internal 32 kHz LSE oscillator be calibrated, and what is its accuracy?

Yes - the LSE oscillator supports digital calibration via the RCC_BDCR register, allowing fine-tuning of the 32.768 kHz output. Factory-trimmed accuracy is ±20 ppm over -40°C to +85°C, improving to ±5 ppm after user calibration using the RTC calibration register (RTCCR) and reference clock source.

Is there a qualified alternative package for STM32L011D3P6TR with identical pinout and functionality?

No - the UFQFPN20 package (3×3 mm, 20-pin) used by STM32L011D3P6TR has no pin-compatible alternative within the STM32L011x3/x4 family. Other variants (e.g., STM32L011K3/K4) use LQFP32 or UFQFPN32 packages with different pin counts and layouts; migration requires PCB redesign and firmware I/O remapping.