Item specifics
Description
STM32L011F4P6 Product Overview
STM32L011F4P6 is a Cortex-M0+ MCU at 32 MHz, TSSOP-20. 16 KB Flash, 2 KB SRAM, 512B EEPROM, 12-bit ADC (7 ch), LP timers, RTC, 1×USART, 1×SPI, 1×I2C. Up to 16 x 5 V-tolerant I/Os. 1.65–3.6 V, -40–85 °C. As a value-line member of the STM32L0 series, it delivers 32-bit performance at exceptionally low power and cost, optimized for battery-powered, space-constrained IoT nodes and portable applications, with a TSSOP-20 package that is easy to hand-solder.
STM32L011F4P6 Core Features
Core: Cortex-M0+ 32 MHz, low-power design
Memory: 16 KB Flash, 2 KB SRAM, 512B EEPROM
Analog: 12-bit ADC (7 ch)
Connectivity: 1×USART, 1×SPI, 1×I2C
Timers: LP Timer, GP Timers, RTC
I/Os: 16 (5 V-tolerant)
Package: TSSOP-20
Temperature Range: -40°C to 85°C
STM32L011F4P6 Applications
IoT Sensor Nodes: Battery-powered environmental sensors, wireless modules
Portable Devices: Wearables, portable medical devices
Industrial Metering: Water, gas, and electricity meters
Consumer Electronics: Remote controls, e-labels, smart cards
Space-Constrained Energy Harvesting: Self-powered systems using energy harvesting
STM32L011F4P6 Key Advantages
Ultra-Low Power: Multiple low-power modes extend battery life
Integrated EEPROM: Eliminates external storage for data logging
32-bit Performance, 8-bit Price: Enjoy the ARM ecosystem at a very low cost
5 V-tolerant I/Os: Enhanced robustness, simplified level shifting
TSSOP-20 Package: Easy to hand-solder, ideal for rapid prototyping
Wide Operating Voltage: 1.65–3.6V, flexible for battery-powered applications
Full Ecosystem Compatibility: Easy development with STM32CubeIDE/HAL/LL libraries
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FAQ
1. What is STM32L011F4P6 and what are its main highlights in the STM32L0 series?
STM32L011F4P6 is an ultra‑low‑power entry‑level 32‑bit MCU from STMicroelectronics' STM32L0 series, built around an Arm® Cortex®‑M0+ core in a TSSOP‑20 package. Running at 32 MHz, it offers 16 KB Flash, 2 KB SRAM, and 512 bytes of embedded EEPROM, along with a 12‑bit ADC and a low‑power UART. As a small, hand‑solder‑friendly variant, it delivers core processing and analog acquisition at an extremely attractive price point, making it ideal for simple battery‑powered devices with tight space, power, and budget constraints.
2. What are the key specifications of STM32L011F4P6?
Core: Arm® Cortex®‑M0+, up to 32 MHz
Memory: 16 KB Flash, 2 KB SRAM, 512‑byte EEPROM
Operating Voltage: 1.65 V to 3.6 V
Temperature Range: -40 °C to +85 °C (industrial grade)
I/O Count: up to 14
Package: TSSOP‑20 (6.5 mm × 4.4 mm)
3. Is the TSSOP‑20 package easy to solder? What are its advantages over the QFN version (F4U6)?
Very easy. The TSSOP‑20 has all pins exposed with a 0.65 mm pitch, making drag‑soldering with a standard iron and flux straightforward—no hot‑air station required. Compared to the QFN variant (STM32L011F4U6), the TSSOP package offers clear advantages in hand soldering, visual inspection, and rework, making it a great choice for hobbyists, students, and small teams for prototyping and small‑batch production. Its 6.5 mm × 4.4 mm size also strikes an excellent balance between compactness and ease of handling.
4. Why choose STM32L011 over STM32L031 or higher series? What are the differences?
The STM32L011 is the most streamlined entry in the L0 family. It features smaller Flash (16 KB vs. 32 KB) and slightly fewer peripherals (one SPI and one I²C), but retains the essential 12‑bit ADC, low‑power UART, and a valuable 512‑byte hardware EEPROM. If your application has a small code footprint, simple functionality, and strict cost requirements, the L011 is a highly cost‑effective choice. For larger program space or richer peripherals, consider the L031 or L051 series.
5. What can you do with 16 KB Flash and 2 KB SRAM? Won't they be too limiting?
This combination is designed for highly optimized bare‑metal firmware. 16 KB Flash can accommodate compact sensor drivers, LPUART communication routines, and basic control logic. 2 KB SRAM requires very careful variable management, but is entirely workable for single‑function applications—for instance, reading a sensor, transmitting data over serial, and then entering deep sleep. The on‑chip 512‑byte EEPROM can also store calibration data or configuration parameters, eliminating the need for an external memory chip.
6. What practical use does the built‑in 512‑byte EEPROM serve?
It can retain device configuration settings, calibration coefficients, sensor trimming values, or small data logs across power cycles. Compared to emulating EEPROM in flash, this hardware EEPROM supports higher write endurance and byte‑level access, making it very convenient for storing non‑volatile data in ultra‑low‑power applications without any external components.
7. How low is its power consumption? What are the typical currents across different modes?
Temperature Range: -40 °C to +85 °C
Ultra‑low‑power modes:
Standby mode: ~0.27 µA (no RTC)
Stop mode: ~0.4 µA (no RTC), ~0.8 µA with RTC
Run mode: ~88 µA/MHz
8. Can the built‑in 12‑bit ADC be used in the 20‑pin package? How many channels are available?
Yes, it can. Despite the small package, the chip still brings out multiple analog input channels (typically 4‑6, depending on pin‑multiplexing configuration). The ADC supports up to 1.14 Msps, 12‑bit resolution, and can wake the CPU via the analog watchdog while in low‑power modes. This makes it ideal for periodically monitoring battery voltage or analog sensor signals in tiny devices.
9. What communication interfaces are available? Is there a low‑power UART?
The STM32L011F4P6 provides 1× SPI, 1× I²C, and 1× low‑power UART (LPUART). The LPUART can remain operational in Stop mode and wake the MCU upon an address match or start‑bit detection, greatly reducing standby power. Because these interfaces may share pins with GPIOs in the 20‑pin package, it is recommended to plan your pin assignments using STM32CubeMX to avoid conflicts.
10. If I later need more storage or richer peripherals, what upgrade options are available?
If you need larger Flash and SRAM, you can upgrade to the STM32L031F4P6 or L031K6T6 (32 KB Flash, 8 KB SRAM) in the same TSSOP‑20 or LQFP‑32 packages. For more I/Os, choose the LQFP‑48 L051C8T6. If a segment LCD driver or USB is required, step up to the L052 or L053 series. In all these upgrade paths, the core code remains reusable—only pin configuration and peripheral parameters need adjustment in STM32CubeMX.