STM32L071K8U6 STM32 32-bit Arm Cortex MCUs by STMicroelectronics

Ultra-low-power Arm Cortex-M0+ MCU with 64-Kbytes of Flash memory, 32 MHz CPU

Status: Active
Series: STM32L071K8
RoHS: Compliant
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The access line ultra-low-power STM32L071xx microcontrollers incorporate the high-performance Arm Cortex-M0+ 32-bit RISC core operating at a 32 MHz frequency, a memory protection unit (MPU), high-speed embedded memories (up to 192 Kbytes of Flash program memory, 6 Kbytes of data EEPROM and 20 Kbytes of RAM) plus an extensive range of enhanced I/Os and peripherals. The STM32L071xx devices provide high power efficiency for a wide range of performance. It is achieved with a large choice of internal and external clock sources, an internal voltage adaptation and several low-power modes. The STM32L071xx devices offer several analog features, one 12-bit ADC with hardware oversampling, two ultra-low-power comparators, several timers, one low-power timer (LPTIM), four general-purpose 16-bit timers and two basic timer, one RTC and one SysTick which can be used as timebases. They also feature two watchdogs, one watchdog with independent clock and window capability and one window watchdog based on bus clock. Moreover, the STM32L071xx devices embed standard and advanced communication interfaces: up to three I2Cs, two SPIs, one I2S, four USARTs, a low-power UART (LPUART), . The STM32L071xx also include a real-time clock and a set of backup registers that remain powered in Standby mode. The ultra-low-power STM32L071xx devices operate from a 1.8 to 3.6 V power supply (down to 1.65 V at power down) with BOR and from a 1.65 to 3.6 V power supply without BOR option. They are available in the -40 to +125 °C temperature range. A comprehensive set of power-saving modes allows the design of low-power applications.

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Prices starting from US$1.96

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Features

Ultra-low-power platform 1.65 V to 3.6 V power supply -40 to 125 °C temperature range 0.29 µA Standby mode (3 wakeup pins) 0.43 µA Stop mode (16 wakeup lines) 0.86 µA Stop mode + RTC + 20-Kbyte RAM retention Down to 93 µA/MHz in Run mode 5 µs wakeup time (from Flash memory) 41 µA 12-bit ADC conversion at 10 ksps
1.65 V to 3.6 V power supply
-40 to 125 °C temperature range
0.29 µA Standby mode (3 wakeup pins)
0.43 µA Stop mode (16 wakeup lines)
0.86 µA Stop mode + RTC + 20-Kbyte RAM retention
Down to 93 µA/MHz in Run mode
5 µs wakeup time (from Flash memory)
41 µA 12-bit ADC conversion at 10 ksps
Core: Arm® 32-bit Cortex®-M0+ with MPU From 32 kHz up to 32 MHz max. 0.95 DMIPS/MHz
From 32 kHz up to 32 MHz max.
0.95 DMIPS/MHz
Memories Up to 192-Kbyte Flash memory with ECC(2 banks with read-while-write capability) 20 -Kbyte RAM 6 Kbytes of data EEPROM with ECC 20-byte backup register Sector protection against R/W operation
Up to 192-Kbyte Flash memory with ECC(2 banks with read-while-write capability)
20 -Kbyte RAM
6 Kbytes of data EEPROM with ECC
20-byte backup register
Sector protection against R/W operation
Up to 84 fast I/Os (78 I/Os 5V tolerant)
Reset and supply management Ultra-safe, low-power BOR (brownout reset) with 5 selectable thresholds Ultra-low-power POR/PDR Programmable voltage detector (PVD)
Ultra-safe, low-power BOR (brownout reset) with 5 selectable thresholds
Ultra-low-power POR/PDR
Programmable voltage detector (PVD)
Clock sources 1 to 25 MHz crystal oscillator 32 kHz oscillator for RTC with calibration High speed internal 16 MHz factory-trimmed RC (+/- 1%) Internal low-power 37 kHz RC Internal multispeed low-power 65 kHz to 4.2 MHz RC PLL for CPU clock
1 to 25 MHz crystal oscillator
32 kHz oscillator for RTC with calibration
High speed internal 16 MHz factory-trimmed RC (+/- 1%)
Internal low-power 37 kHz RC
Internal multispeed low-power 65 kHz to 4.2 MHz RC
PLL for CPU clock
Pre-programmed bootloader USART, I2C, SPI supported
USART, I2C, SPI supported
Development support Serial wire debug supported
Serial wire debug supported
Rich Analog peripherals 12-bit ADC 1.14 Msps up to 16 channels (down to 1.65 V) 2x ultra-low-power comparators (window mode and wake up capability, down to 1.65 V)
12-bit ADC 1.14 Msps up to 16 channels (down to 1.65 V)
2x ultra-low-power comparators (window mode and wake up capability, down to 1.65 V)
7-channel DMA controller, supporting ADC, SPI, I2C, USART, Timers
Up to 10x peripheral communication interfaces 4x USART (2 with ISO 7816, IrDA), 1x UART (low power) Up to 6x SPI 16 Mbits/s 3x I2C (2 with SMBus/PMBus)
4x USART (2 with ISO 7816, IrDA), 1x UART (low power)
Up to 6x SPI 16 Mbits/s
3x I2C (2 with SMBus/PMBus)
11x timers: 2x 16-bit with up to 4 channels, 2x 16-bit with up to 2 channels, 1x 16-bit ultra-low-power timer, 1x SysTick, 1x RTC, 2x 16-bit basic, and 2x watchdogs (independent/window)
CRC calculation unit, 96-bit unique ID
All packages are ECOPACK2

Resources


Application Notes
AN4629 ADC hardware oversampling for microcontrollers of the STM32 L0 and L4 series
AN3126 Audio and waveform generation using the DAC in STM32 products
AN4312 Design with surface sensors for touch sensing applications on MCUs
AN1709 EMC design guide for STM8, STM32 and Legacy MCUs
AN3960 ESD considerations for touch sensing applications on MCUs
AN5612 ESD protection of STM32 MCUs and MPUs
AN1181 Electrostatic discharge sensitivity measurement
AN5543 Enhanced methods to handle SPI communication on STM32 devices
AN4566 Extending the DAC performance of STM32 microcontrollers
AN4776 General-purpose timer cookbook for STM32 microcontrollers
AN4467 Getting started with STM32L0xx hardware development
AN5105 Getting started with touch sensing control on STM32 microcontrollers
AN4750 Handling of soft errors in STM32 applications
AN4803 High-speed SI simulations using IBIS and board-level simulations using HyperLynx® SI on STM32 MCUs and MPUs
AN4718 How to design a VBAT system based on STM32L0/L1 series (with external components)
AN2834 How to get the best ADC accuracy in STM32 microcontrollers
AN4229 How to implement a vocoder solution using STM32 microcontrollers
AN4991 How to wake up an STM32xx Series microcontroller from low-power mode with the USART or the LPUART
AN4221 I2C protocol used in the STM32 bootloader
AN5086 I2S protocol emulation on STM32L0 Series microcontrollers using a standard SPI peripheral
AN4299 Improve conducted noise robustness for touch sensing applications on MCUs
AN3236 Increase the number of touchkeys for touch sensing applications on MCUs
AN5027 Interfacing PDM digital microphones using STM32 MCUs and MPUs
AN5156 Introduction to STM32 microcontrollers security
AN4838 Managing memory protection unit in STM32 MCUs
AN4617 Migrating between STM32F0 and STM32L0 microcontrollers
AN4809 Migrating between STM32L0 Series and STM32L4 Series / STM32L4+ Series microcontrollers
AN4654 Migrating between STM32L1 and STM32L0 series microcontrollers
AN5408 Migrating from STM32L0, STM32L1, and STM32L4 Series associated with SX12xx transceivers to STM32WL Series microcontrollers
AN4635 Minimization of power consumption using LPUART for STM32 microcontrollers
AN2867 Oscillator design guide for STM8AF/AL/S, STM32 MCUs and MPUs
AN4286 SPI protocol used in the STM32 bootloader
AN4908 STM32 USART automatic baud rate detection
AN4013 STM32 cross-series timer overview
AN4899 STM32 microcontroller GPIO hardware settings and low-power consumption
AN4989 STM32 microcontroller debug toolbox
AN4230 STM32 microcontroller random number generation validation using the NIST statistical test suite
AN2606 STM32 microcontroller system memory boot mode
AN4725 STM32Cube MCU Package examples for STM32L0 Series
AN4729 STM32L0/L4 FIREWALL overview
AN4445 STM32L0xx ultra-low power features overview
AN4310 Sampling capacitor selection guide for touch sensing applications on MCUs
AN2639 Soldering recommendations and package information for Lead-free ECOPACK MCUs and MPUs
AN5036 Thermal management guidelines for STM32 applications
AN4316 Tuning a touch sensing application on MCUs
AN3155 USART protocol used in the STM32 bootloader
AN3156 USB DFU protocol used in the STM32 bootloader
AN5225 USB Type-C Power Delivery using STM32 MCUs and MPUs
AN4730 Using the FIREWALL embedded in STM32L0/L4/L4+ Series MCUs for secure access to sensitive parts of code and data
AN2548 Using the STM32F0/F1/F3/Gx/Lx Series DMA controller
AN4759 Using the hardware real-time clock (RTC) and the tamper management unit (TAMP) with STM32 microcontrollers
AN4655 Virtually increasing the number of serial communication peripherals in STM32 applications





Application Notes for related Tools & Software
AN2592 Achieving 32-bit timer resolution with software expansion for STM32Cube and Standard Peripheral Library
AN5698 Adapting the X-CUBE-STL functional safety package for STM32 (IEC 61508 compliant) to other safety standards
Atollic Editing Keyboard Shortcuts
AN4636 Demonstration of LC sensor for gas or water metering based on STM32L073Z-EVAL and STM32L476RG-NUCLEO boards
AN4841 Digital signal processing for STM32 microcontrollers using CMSIS
FreeRTOS Guide
AN5361 Getting started with projects based on dual-core STM32H7 microcontrollers in STM32CubeIDE
AN5564 Getting started with projects based on dual-core STM32WL microcontrollers in STM32CubeIDE
AN5394 Getting started with projects based on the STM32L5 Series in STM32CubeIDE
AN5360 Getting started with projects based on the STM32MP1 Series in STM32CubeIDE
AN4435 Guidelines for obtaining UL/CSA/IEC 60730-1/60335-1 Class B certification in any STM32 application
AN5418 How to build a simple USB-PD sink application with STM32CubeMX
AN4736 How to calibrate STM32L4 Series microcontrollers internal RC oscillator
AN4631 How to calibrate an STM32L0xx internal RC oscillator
AN5676 How to calibrate internal RC oscillators on STM32U5 Series
AN4500 How to display size-optimized pictures on a 4-grey level E-Paper from STM32 embedded memory
How to do semihosting in TrueSTUDIO
Installing STM32Cubeprogrammer in TrueSTUDIO
AN5056 Integration guide for the X-CUBE-SBSFU STM32Cube Expansion Package
AN4865 Low-power timer (LPTIM) applicative use cases on STM32 MCUs and MPUs
AN5426 Migrating graphics middleware projects from STM32CubeMX 5.4.0 to STM32CubeMX 5.5.0
AN4635 Minimization of power consumption using LPUART for STM32 microcontrollers
AN4767 On-the-fly firmware update for dual bank STM32 microcontrollers
AN4502 STM32 SMBus/PMBus™ embedded software expansion for STM32Cube™
AN4657 STM32 in-application programming (IAP) using the USART
AN4777 STM32 power mode examples
AN4725 STM32Cube MCU Package examples for STM32L0 Series
STM32CubeMX Installation in TrueSTUDIO
AN5731 STM32CubeMX and STM32CubeIDE thread-safe solution
AN5054 Secure programming using STM32CubeProgrammer
TrueSTUDIO for ARM® Migration Guide: IAR Embedded Workbench to TrueSTUDIO
AN5126 Using X-CUBE-RC-CALIB software to calibrate STM32G0 Series internal RC oscillator
AN5282 Using X-CUBE-RC-CALIB software to calibrate STM32WB Series internal RC oscillators
AN4759 Using the hardware real-time clock (RTC) and the tamper management unit (TAMP) with STM32 microcontrollers
AN4808 Writing to non-volatile memory without disrupting code execution on microcontrollers of the STM32L0 and STM32L1 Series





Alternative Descriptions

Mcu, 32Bit, 32Mhz, Ufqfpn-32 Rohs Compliant: Yes |Stmicroelectronics STM32L071K8U6 | Newark Electronics
MCU, 32BIT, 32MHZ, UFQFPN-32 | element14
MCU 32-Bit STM32 ARM Cortex M0+ RISC 64KB Flash 2.5V/3.3V 32-Pin UFQFPN Tray | Avnet America


Frequently Asked Questions

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What category does STM32L071K8U6 fall under?

The STM32L071K8U6 is listed under Microcontrollers & Microprocessors > STM32 32-bit Arm Cortex MCUs > STM32 Ultra Low Power MCUs > STM32L0 Series > STM32L0x1.

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You can view similar parts to STM32L071K8U6 when available in the STM32L0x1 range under the specifications section at the bottom of the details page.

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Is the STM32L071K8U6 RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by STMicroelectronics.

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