Ultra-low-power ARM Cortex-M0+ MCU with 192-Kbytes Flash, 32 MHz CPU, USB, LCD, AES

The ultra-low-power STM32L083xx microcontrollers incorporate the connectivity power of the universal serial bus (USB 2.0 crystal-less) with 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 STM32L083xx 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 STM32L083xx devices offer several analog features, one 12-bit ADC with hardware oversampling, two DACs, two ultra-low-power comparators, AES, 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 STM32L083xx devices embed standard and advanced communication interfaces: up to three I2Cs, two SPIs, one I2S, four USARTs, a low-power UART (LPUART), and a crystal-less USB. The devices offer up to 24 capacitive sensing channels to simply add touch sensing functionality to any application.

The STM32L083xx also include a real-time clock and a set of backup registers that remain powered in Standby mode.

Finally, their integrated LCD controller has a built-in LCD voltage generator that allows to drive up to 8 multiplexed LCDs with contrast independent of the supply voltage.

The ultra-low-power STM32L083xx 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.

Key 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 KB 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
  • Memories
    • Up to 192 KB Flash memory with ECC (2 banks with read-while-write capability)
    • 20KB RAM
    • 6 KB 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)
  • 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
    • Internal self calibration of 48 MHz RC for USB
    • PLL for CPU clock
  • Pre-programmed bootloader
    • USB, USART supported
  • Development support
    • Serial wire debug supported
  • LCD driver for up to 4x52 or 8x48 segments
    • Support contrast adjustment
    • Support blinking mode
    • Step-up converted on board
  • Rich Analog peripherals
    • 12-bit ADC 1.14 Msps up to 16 channels (down to 1.65 V)
    • 2 x 12-bit channel DACs with output buffers (down to 1.8 V)
    • 2x ultra-low-power comparators (window mode and wake up capability, down to 1.65 V)
  • Up to 24 capacitive sensing channels supporting touchkey, linear and rotary touch sensors
  • 7-channel DMA controller, supporting ADC, SPI, I2C, USART, DAC, Timers, AES
  • 11x peripheral communication interfaces
    • 1x USB 2.0 crystal-less, battery charging detection and LPM
    • 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 for DAC, and 2x watchdogs (independent/window)
  • CRC calculation unit, 96-bit unique ID
  • True RNG and firewall protection
  • Hardware Encryption Engine AES 128-bit
  • All packages are ECOPACK®2

Circuit Diagram

Resources

Technical Documentation

Product Specifications
Description Version Size
Ultra-low-power 32-bit MCU Arm®-based Cortex®-M0+, up to 192KB Flash, 20KB SRAM, 6KB EEPROM, LCD, USB, ADC, DACs, AES 4.0 1 MB
Application Notes
Description Version Size
ADC hardware oversampling for microcontrollers of the STM32 L0 and L4 series 1.0 321 KB
Audio and waveform generation using the DAC in STM32 microcontrollers 3.0 816 KB
Basics and low-cost solution proposals to move from legacy USB2.0 connector to USB Type-C™ connector with STM32 devices 1.0 443 KB
EMC design guide for ST microcontrollers 2.0 843 KB
ESD considerations for touch sensing applications on MCUs 2.0 353 KB
Electrostatic discharge sensitivity measurement 1.6 49 KB
Extending the DAC performance of STM32 microcontrollers 2.0 365 KB
General-purpose timer cookbook 2.0 1 MB
Getting started with STM32L0xx hardware development 2.0 715 KB
Guidelines for designing touch sensing applications with surface sensors 3.0 1 MB
Guidelines to improve conducted noise robustness on STM32F0/F3, STM32L0/L4 series touch sensing applications 3.0 613 KB
Guidelines to increase the number of touch sensing touchkeys 4.0 300 KB
Handling of soft errors in STM32 applications 2.1 410 KB
High-speed SI simulations using IBIS and board-level simulations using HyperLynx SI on STM32 32-bit ARM® Cortex® MCUs 1.1 2 MB
How to design a VBAT system based on STM32L0/L1 series (with external components) 1.0 293 KB
How to get the best ADC accuracy in STM32 microcontrollers 3.1 1 MB
How to implement a vocoder solution using STM32 microcontrollers 1.1 466 KB
How to wake up an STM32F0/F3/L0/L4 microcontroller from low-power mode with the USART or the LPUART 1.0 317 KB
I2C protocol used in the STM32 bootloader 5.0 682 KB
I2S protocol emulation on STM32L0 Series microcontrollers using a standard SPI peripheral 1.0 2 MB
Implications of memory interface configurations on low-power STM32 microcontrollers 2.0 435 KB
Managing memory protection unit (MPU) in STM32 MCUs 1.0 284 KB
Migrating between STM32F0 and STM32L0 microcontrollers 1.0 461 KB
Migrating between STM32L0 Series and STM32L4 Series / STM32L4+ Series microcontrollers 4.0 1 MB
Migrating between STM32L1 and STM32L0 series microcontrollers 1.0 639 KB
Minimization of power consumption using LPUART in microcontrollers of the STM32L0 and STM32L4 series 3.2 1 MB
Oscillator design guide for STM8AF/AL/S and STM32 microcontrollers 11.0 2 MB
SPI protocol used in the STM32 bootloader 4.0 551 KB
STM32 USART automatic baud rate detection 1.0 268 KB
STM32 cross-series timer overview 6.0 555 KB
STM32 microcontroller debug toolbox 2.0 5 MB
STM32 microcontroller system memory boot mode 31.0 3 MB
STM32 microcontrollers random number generation validation using NIST statistical test suite 2.0 517 KB
STM32Cube firmware examples for STM32L0 Series 5.0 425 KB
STM32L0/L4 FIREWALL overview 1.2 114 KB
STM32L0xx ultra-low power features overview 1.2 251 KB
Sampling capacitor selection guide for MCU based touch sensing applications 3.0 208 KB
Tuning a STMTouch-based application 3.0 783 KB
USART protocol used in the STM32 bootloader 7.0 617 KB
USB DFU protocol used in the STM32 bootloader 6.0 373 KB
Using the hardware real-time clock (RTC) in low-power modes with STM32 microcontrollers 3.0 1 MB
Virtually increasing the number of serial communication peripherals in STM32 applications 1.1 338 KB
Technical Notes & Articles
Description Version Size
Description of WLCSP for microcontrollers and recommendations for its use 4.0 1 MB
How to use EWARM 6.2x with projects built with EWARM 6.1 and previous versions 1.2 97 KB
Tape and reel shipping media for STM32 microcontrollers in BGA packages 2.1 745 KB
Tape and reel shipping media for STM8 and STM32 microcontrollers in FPN packages 3.0 753 KB
Tape and reel shipping media for STM8 and STM32 microcontrollers in QFP packages 3.0 830 KB
Tape and reel shipping media for STM8 and STM32 microcontrollers in SO packages 1.0 755 KB
Tape and reel shipping media for STM8 and STM32 microcontrollers in TSSOP and SSOP packages 1.0 743 KB
Reference Manuals
Description Version Size
Ultra-low-power STM32L0x3 advanced Arm®-based 32-bit MCUs 6.0 11 MB
Programming Manuals
Description Version Size
STM32L0 Series Cortex®-M0+ programming manual 2.0 1 MB
Errata Sheets
Description Version Size
STM32L083x8/B/Z device limitations 5.0 347 KB

HW Model, CAD Libraries & SVD

HW Model, CAD Libraries & SVD
Description Version Size
STM32L0 CAD Symbol and Footprint files 1.1 2 MB
STM32L0 IBIS models 2.0 36 MB
STM32L0 System View Description 1.2 147 KB

Presentations & Training Material

Presentations
Description Version Size
Discover the STM32 with a free 32-bit Cortex-M0/0+ MCU Professional Developer’s Package: FAQ 1.0 290 KB
Discover the STM32 with a free 32-bit Cortex-M0/0+ MCU Professional Developer’s Package: Webinar Presentation 1.0 4 MB
Getting started with STM32F0 or STM32L0 series 1.0.0 606 KB
STM32 and STM8 Functional Safety Packages 2 1 MB
STM32L4+ MCU series - Excellence in ultra-low-power with more performance 1.0 1 MB

Publications and Collaterals

Flyers
Description Version Size
Get ready for the largest IoT development ecosystem 17.02 741 KB
STM32 Nucleo boards - Unified scalable offering 17.11 1 MB
STM32 for makers - Releasing your creativity 17.06 2 MB
Brochures
Description Version Size
STM32 32-bit MCU family - Leading supplier of ARM® Cortex®-M microcontrollers 17.10 2 MB
STM32L series - Ultra-low-power 32-bit MCUs 16.4 3 MB
STM32L0 Series - Ultra-low-power MCUs - Tailored to your needs 17.3 1 MB
Magazine Articles
Description Version Size
Design & Elektronik magazine - Benchmark ULPBench debunked 1.1 12 MB

Tools and Software

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Support & Community


Sample & Buy

Part Number Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STM32L083CZT6TR LQFP 48 7x7x1.4 Tape And Reel -40 85 Active 2.124 10000 5A002A1A 5A992C - MORE INFO No availability reported, please contact our Sales office
STM32L083CZT6 LQFP 48 7x7x1.4 Tray -40 85 Active 2.124 10000 5A002A1A 5A992C - MORE INFO No availability reported, please contact our Sales office
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STM32L083CZT6TR ActiveLQFP 48 7x7x1.4IndustrialEcopack2 0 0
STM32L083CZT6 ActiveLQFP 48 7x7x1.4IndustrialEcopack2 0 0
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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