STMicroelectronics STM32L011F4P6TR

Overview

STM32L011F4P6TR from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller in TSSOP20 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 0.54 µA Stop mode + RTC with 2 KB RAM retention-ideal for battery-powered sensor nodes and smart metering endpoints.

For engineers reviewing the STM32L011F4P6TR datasheet, STM32L011F4P6TR pinout, STM32L011F4P6TR application, or STM32L011F4P6TR equivalent, key selection criteria include standby current (0.23 µA), wakeup time (5 µs from Flash), 23 I/Os (20 of which are 5V-tolerant), and integrated EEPROM with error correction for firmware parameter storage in field-deployed devices.

Technical Context

The STM32L011F4P6TR implements a single-core Arm Cortex-M0+ running at up to 32 MHz with 0.95 DMIPS/MHz performance and dynamic voltage scaling support. Its clock system integrates factory-trimmed 16 MHz HSI (±1%), 37 kHz LSI, 65 kHz–4.2 MHz MSI, 32 kHz LSE for RTC calibration, and a PLL for CPU clock multiplication.

Power architecture includes five selectable brownout reset (BOR) thresholds, programmable voltage detector (PVD), and three low-power modes: Standby (0.23 µA), Stop (0.29 µA), and Stop+RTC+RAM retention (0.54 µA). Analog subsystem comprises one 12-bit ADC with 10-channel multiplexing down to 1.65 V supply and two comparators with window mode and wake-up capability.

Key Specifications

Pinout & Package

TSSOP20 (20-lead, 5 × 4.4 mm, 0.65 mm pitch) package compliant with ECOPACK®2 environmental standard. RoHS-compliant, halogen-free, and qualified for industrial temperature range (–40 to +125 °C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L011F4P6TR, STM32L031F4P6TR adds USB functionality at higher power and cost, while EFM32ZG222F32 achieves lower standby current but lacks on-chip EEPROM-making STM32L011F4P6TR optimal for cost-sensitive, self-contained, field-upgradable embedded sensors.

Availability

STM32L011F4P6TR is available at Aetrix Electronics and suitable for smart utility metering, wireless sensor nodes, industrial predictive maintenance, and medical wearable patches requiring stable component supply across extended product lifecycles.

Supply support for STM32L011F4P6TR 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, MEMS, and automotive semiconductors since 1987.

The STM32L0 Access line targets ultra-low-power embedded applications demanding long battery life, robust memory integrity, and industrial-grade reliability-optimized for sensor edge nodes, metering, and portable medical devices.

FAQ

What is the maximum operating frequency and core type of the STM32L011F4P6TR?

The STM32L011F4P6TR features an Arm Cortex-M0+ core rated for up to 32 MHz operation with 0.95 DMIPS/MHz performance. It supports dynamic voltage scaling to maintain efficiency across supply voltages from 1.65 V to 3.6 V, and its clock tree includes factory-trimmed 16 MHz HSI (±1%), 32 kHz LSE for RTC, and a PLL for frequency multiplication-enabling precise timing control in battery-constrained environments.

Does the STM32L011F4P6TR support hardware error correction for memory?

Yes, the STM32L011F4P6TR integrates ECC (Error Correction Code) protection for both its 16 KB Flash memory and 512 B data EEPROM. This ensures bit-error resilience during program execution and nonvolatile data storage-critical for firmware updates and calibration parameter retention in unattended field deployments without external memory controllers or software CRC layers.

How many I/O pins are 5V-tolerant, and what is their functional significance?

20 of the 23 GPIOs on the STM32L011F4P6TR are 5V-tolerant, including all analog input channels used by the 12-bit ADC. This eliminates the need for external level shifters when interfacing with legacy 5V sensors, industrial logic, or analog front-end ICs-reducing BOM count, PCB area, and signal integrity risk in mixed-voltage systems such as smart meters and industrial transmitters.

What low-power modes does the STM32L011F4P6TR offer, and how do they differ in current consumption?

The STM32L011F4P6TR offers 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 modes retain register content and support fast wakeup (5 µs from Flash). The RTC remains active in Stop+RTC mode, enabling calendar-based wakeups, while Standby disables all clocks except the 32 kHz LSE-making it ideal for infrequent, time-agnostic events like manual button press or external interrupt.