Ultra-low-power 32-bit Value Line ARM Cortex-M3 MCU with 64 Kbytes Flash, 32 MHz CPU, LCD, USB

The ultra-low-power STM32L100C6 and STM32L100R8/RB devices incorporate the connectivity power of the universal serial bus (USB) with the high-performance ARM®Cortex®-M3 32-bit RISC core operating at a frequency of 32 MHz (33.3 DMIPS), a memory protection unit (MPU), high-speed embedded memories (Flash memory up to 128 Kbytes and RAM up to 10 Kbytes) and an extensive range of enhanced I/Os and peripherals connected to two APB buses.

All the devices offer a 12-bit ADC, 2 DACs and 2 ultra-low-power comparators, six general-purpose 16-bit timers and two basic timers, which can be used as time bases.

Moreover, the STM32L100C6 and STM32L100R8/RB devices contain standard and advanced communication interfaces: up to two I2Cs and SPIs, three USARTs and a USB.

They also include a real-time clock with sub-second counting and a set of backup registers that remain powered in Standby mode.

Finally, the 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 STM32L100C6 and STM32L100R8/RB devices operate from a 1.8 to 3.6 V power supply. They are available in the -40 to +85 °C temperature range. A comprehensive set of power-saving modes allows the design of low-power applications.

Key Features

  • Ultra-low-power platform
    • 1.8 V to 3.6 V power supply
    • -40°C to 85°C temperature range
    • 0.3 μA Standby mode (2 wakeup pins)
    • 0.9 μA Standby mode + RTC
    • 0.57 μA Stop mode (16 wakeup lines)
    • 1.2 μA Stop mode + RTC
    • 9 μA Low-power run mode
    • 214 μA/MHz Run mode
    • 10 nA ultra-low I/O leakage
    • < 8 μs wakeup time
  • Core: 32-bit ARM® Cortex® -M3 CPU
    • From 32 kHz up to 32 MHz max
    • 1.25 DMIPS/MHz (Dhrystone 2.1)
    • Memory protection unit
  • 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 24 MHz crystal oscillator
    • 32 kHz oscillator for RTC with calibration
    • High-speed internal 16 MHz
    • Internal low-power 37 kHz RC
    • Internal multispeed low-power 65 kHz to 4.2 MHz
    • PLL for CPU clock and USB (48 MHz)
  • Pre-programmed bootloader
    • USART supported
  • Development support
    • Serial wire debug supported
    • JTAG supported
  • Up to 51 fast I/Os (42 I/Os 5V tolerant), all mappable on 16 external interrupt vectors
  • Memories
    • Up to 128 Kbytes Flash memory with ECC
    • Up to 10 Kbytes RAM
    • Up to 2 Kbytes of true EEPROM with ECC
    • 20-byte backup register
  • LCD Driver for up to 8x28 segments
  • Analog peripherals
    • 12-bit ADC 1 Msps up to 20 channels
    • 12-bit DAC 2 channels with output buffers
    • Two ultra-low-power comparators
  • Seven DMA controller channels
  • Eight communication interface peripherals
    • One USB 2.0
    • Three USARTs (ISO 7816, IrDA)
    • Two SPIs (16 Mbit/s)
    • Two I2Cs (SMBus/PMBus)
  • Ten timers:
    • Six 16-bit timers with up to 4 IC/OC/PWM channels
    • Two 16-bit basic timers
    • Two watchdog timers (independent and window)
  • CRC calculation unit
  • All packages ECOPACK® 2

Circuit Diagram

bd_stm32l100x8_64k.jpg

Design

Technical Documentation

Product Specifications
Description Version Size
DS9496 DS9496: Ultra-low-power 32-bit MCU ARM®-based Cortex®-M3, 128KB Flash, 10KB SRAM, 2KB EEPROM, LCD, USB, ADC, DAC 5.0 1 MB
Application Notes
Description Version Size
AN3126 AN3126: Audio and waveform generation using the DAC in STM32 microcontrollers 2.0 829 KB
AN4775 AN4775: 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
AN1709 AN1709: EMC design guide for ST microcontrollers 2.0 843 KB
AN3960 AN3960: ESD considerations for touch sensing applications on MCUs 2.0 353 KB
AN1181 AN1181: Electrostatic discharge sensitivity measurement 1.6 49 KB
AN4566 AN4566: Extending the DAC performance of STM32 microcontrollers 2.0 365 KB
AN4776 AN4776: General-purpose timer cookbook 1.0 1 MB
AN3216 AN3216: Getting started with STM32L1xxx hardware development 7.2 674 KB
AN4312 AN4312: Guidelines for designing touch sensing applications with surface sensors 2.0 1 MB
AN3236 AN3236: Guidelines to increase the number of touch sensing touchkeys 4.0 300 KB
AN4750 AN4750: Handling of soft errors in STM32 applications 2.1 410 KB
AN4803 AN4803: High-speed SI simulations using IBIS and board-level simulations using HyperLynx SI on STM32 32-bit ARM® Cortex® MCUs 1.1 2 MB
AN4718 AN4718: How to design a VBAT system based on STM32L0/L1 series (with external components) 1.0 293 KB
AN4229 AN4229: How to implement a vocoder solution using STM32 microcontrollers 1.0 466 KB
AN4777 AN4777: Implications of memory interface configurations on low-power STM32 microcontrollers 2.0 435 KB
AN4838 AN4838: Managing memory protection unit (MPU) in STM32 MCUs 1.0 284 KB
AN4654 AN4654: Migrating between STM32L1 and STM32L0 series microcontrollers 1.0 639 KB
AN4612 AN4612: Migrating from STM32L1 Series to STM32L4 Series microcontrollers 4.0 1 MB
AN3364 AN3364: Migration and compatibility guidelines for STM32 microcontroller applications 3.1 127 KB
AN3422 AN3422: Migration of microcontroller applications from STM32F1 to STM32L1 series 2.1 312 KB
AN2867 AN2867: Oscillator design guide for STM8S, STM8A and STM32 microcontrollers 10.0 2 MB
AN3998 AN3998: PDM audio software decoding on STM32 microcontrollers 1.3 90 KB
AN4908 AN4908: STM32 USART automatic baud rate detection 1.0 268 KB
AN4013 AN4013: STM32 cross-series timer overview 6.0 555 KB
AN2606 AN2606: STM32 microcontroller system memory boot mode 30.0 3 MB
AN4706 AN4706: STM32Cube firmware examples for STM32L1 Series 2.0 468 KB
AN3193 AN3193: STM32L1xx ultralow power features overview 2.1 224 KB
AN4310 AN4310: Sampling capacitor selection guide for MCU based touch sensing applications 3.0 208 KB
AN4316 AN4316: Tuning a STMTouch-based application 3.0 783 KB
AN3155 AN3155: USART protocol used in the STM32 bootloader 7.0 617 KB
AN3248 AN3248: Using STM32L1 analog comparators in application cases 3.1 317 KB
AN3371 AN3371: Using the hardware real-time clock (RTC) in STM32 F0, F2, F3, F4 and L1 series of MCUs 5.1 421 KB
AN4759 AN4759: Using the hardware real-time clock (RTC) in low-power modes with STM32 microcontrollers 2.0 1 MB
AN4655 AN4655: Virtually increasing the number of serial communication peripherals in STM32 applications 1.1 338 KB
Technical Notes & Articles
Description Version Size
TA0342 TA0342: Accurate power consumption estimation for STM32L1 series of ultra-low-power microcontrollers 2.1 343 KB
TN1163 TN1163: Description of WLCSP for microcontrollers and recommendations for its use 4.0 1 MB
TN0830 TN0830: How to use EWARM 6.2x with projects built with EWARM 6.1 and previous versions 1.2 97 KB
TN1176 TN1176: Migrating from STM32L15xx6/8/B to STM32L15xx6/8/B-A and from STM32L100x6/8/B to STM32L100x6/8/B-A 1.1 264 KB
TA0340 TA0340: STM32L Cortex-M3 microcontroller for usage in low-power healthcare applications 1.2 357 KB
TN1204 TN1204: Tape and reel shipping media for STM32 microcontrollers in BGA packages 2.1 745 KB
TN1205 TN1205: Tape and reel shipping media for STM8 and STM32 microcontrollers in FPN packages 3.0 753 KB
TN1206 TN1206: Tape and reel shipping media for STM8 and STM32 microcontrollers in QFP packages 3.0 830 KB
TN1207 TN1207: Tape and reel shipping media for STM8 and STM32 microcontrollers in SO packages 1.0 755 KB
TN1208 TN1208: Tape and reel shipping media for STM8 and STM32 microcontrollers in TSSOP and SSOP packages 1.0 743 KB
Reference Manuals
Description Version Size
RM0038 RM0038: STM32L100xx, STM32L151xx, STM32L152xx and STM32L162xx advanced ARM®-based 32-bit MCUs 14.0 12 MB
Programming Manuals
Description Version Size
PM0056 PM0056: STM32F10xxx/20xxx/21xxx/L1xxxx Cortex-M3 programming manual 5.1 4 MB
Errata Sheets
Description Version Size
ES0125 ES0125: STM32L100x6/8/B, STM32L151x6/8/B and STM32L152x6/8/B ultra-low-power device limitations 14.0 508 KB

HW Model, CAD Libraries & SVD

HW Model, CAD Libraries & SVD
Description Version Size
STM32L1 Boundary Scan Description Language (BSDL) files 1.1 131 KB
STM32L1 CAD Symbol and Footprint files 1.0 573 KB
STM32L1 IBIS models 1.0 45 MB
STM32L1 System View Description 1.1 140 KB

Presentations & Training Material

Presentations
Description Version Size
Fire alarms and smoke detectors - Application guide 1.0 335 KB
STM32 - 32-bit ARM Cortex-M MCUs 3.0 1 MB
STM32 Embedded Software overview 2.3.0 777 KB
STM32 and STM8 Functional Safety Packages 2 1 MB
STM32 and STM8 embedded software solutions 2.0 2 MB
STM8L and STM32 L1 series - Ultra-low-power platform 2.0 789 KB

Publications and Collaterals

Flyers
Description Version Size
Get ready for the largest IoT development ecosystem 17.02 741 KB
STM32 GUI solutions - Advanced HMI now achievable on embedded systems 1.0 1 MB
STM32 Nucleo boards 18.0 1 MB
STM32 for makers Releasing your creativity 16.09 1 MB
Brochures
Description Version Size
STM32™ 32-bit MCU family - Leading supplier of ARM® Cortex®-M microcontrollers 18.0 1 MB
STM32L series - Ultra-low-power 32-bit MCUs 16.4 3 MB
White Papers
Description Version Size
STM32 More Than a Core - Circuit Cellar, Tom Cantrell 1.0 355 KB

Tools and Software

Development Tools
Embedded Software
Evaluation Tools
Hardware Development Tools
Software Development Tools
Evaluation Tool Software
MCUs Embedded Software
Product Evaluation Tools
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
STM32L100R8T6TR LQFP 64 10x10x1.4 Tape And Reel -40 85 NRND - - NEC 3A991A2 CHINA MORE INFO DISTRIBUTOR AVAILABILITY
STM32L100R8T6 LQFP 64 10x10x1.4 Tray -40 85 NRND - - NEC 3A991A2 CHINA MORE INFO DISTRIBUTOR AVAILABILITY
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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**
STM32L100R8T6TR NRNDLQFP 64 10x10x1.4IndustrialEcopack2 0 0
STM32L100R8T6 NRNDLQFP 64 10x10x1.4IndustrialEcopack2 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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