STMicroelectronics STM32L011D4P6

Overview

STM32L011D4P6 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, 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 STM32L011D4P6 datasheet, STM32L011D4P6 pinout, STM32L011D4P6 application, or STM32L011D4P6 equivalent, key selection criteria include ultra-low active/standby current, integrated EEPROM with ECC, 5V-tolerant I/Os (23 pins), RTC with calibration, and SW-DP debug support for constrained embedded designs.

Technical Context

The STM32L011D4P6 implements a single-core Arm Cortex-M0+ executing at up to 32 MHz, with dynamic voltage scaling enabling multiple low-power operating modes (Run, Sleep, Stop, Standby). Its clock system integrates factory-trimmed 16 MHz HSI RC (+/-1%), 32 kHz LSE for RTC, and PLL for CPU frequency multiplication.

Analog subsystem includes a 12-bit ADC with 10-channel multiplexing (down to 1.65 V supply), two ultra-low-power comparators with window mode and wake-up capability, and internal temperature sensor with calibrated reference. Memory protection includes sector-level Flash write/erase lock and ECC on both Flash and EEPROM.

Key Specifications

Pinout & Package

STM32L011D4P6 is housed in a 20-pin Ultra Thin Fine Pitch Quad Flat No-lead (UFQFPN20) package, 3 × 3 mm, 0.5 mm pitch, with exposed thermal pad. This compact, leadless package supports high-density PCB layouts and automated assembly while maintaining thermal performance for low-duty-cycle applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L011D4P6, STM32L031F6P6 offers more memory headroom but removes EEPROM - increasing BOM count if persistent storage is needed; EFM32ZG222F32 achieves lower standby current but sacrifices I/O count and integrated EEPROM, requiring design trade-offs in peripheral flexibility and data retention architecture.

Availability

STM32L011D4P6 is available at Aetrix Electronics and suitable for smart metering, wireless sensor networks, portable medical devices, and industrial edge modules requiring stable component supply and long-term lifecycle support.

Supply support for STM32L011D4P6 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 products for industrial, automotive, and consumer markets.

The STM32L0 series targets ultra-low-power embedded applications, emphasizing energy efficiency, integrated peripherals, and robustness in battery- and energy-harvesting–powered systems - with STM32L011D4P6 optimized for space-constrained, cost-sensitive endpoints.

FAQ

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

The STM32L011D4P6 operates up to 32 MHz with 0.95 DMIPS/MHz performance. At 32 MHz and 3.0 V supply, typical Run mode current is 76 µA/MHz (2.43 mA total), measured with code executing from Flash and peripherals idle. Power scales linearly with frequency and supply voltage, and Dynamic Voltage Scaling reduces voltage at lower frequencies to further cut active power.

Does STM32L011D4P6 support hardware encryption or secure boot features?

No - the STM32L011D4P6 does not include hardware cryptographic accelerators (AES, SHA, PKA) or secure boot ROM. It relies on software-based security implementations and standard Flash write protection. For secure boot or encrypted firmware updates, designers must implement custom solutions using its 96-bit unique ID and protected memory sectors.

Can the internal 16 MHz RC oscillator be used as the system clock without calibration?

Yes - the HSI16 oscillator is factory-trimmed to ±1% accuracy at 25°C and 3.3 V, making it suitable for most timing-critical applications without external crystal. However, for RTC or communication interfaces requiring tighter tolerance (e.g., UART baud rate error <2%), an external 32 kHz LSE or high-accuracy crystal is recommended.

How many I/O pins support wake-up from Stop mode, and what are their voltage requirements?

16 I/O pins support wake-up from Stop mode, including all GPIOs except those configured as analog inputs. Wake-up pins operate down to 1.65 V supply and accept input voltages up to 5 V (5V-tolerant) when VDD ≥ 2.0 V. Each pin can be individually enabled/disabled for wake-up in the PWR_CR register.