Ultra-low-power ARM Cortex-M3 MCU with 256 Kbytes Flash, 32 MHz CPU, USB, 3xOp-amp

The ultra-low-power STM32L151xC/C-A and STM32L152xC/C-A 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 256 Kbytes and RAM up to 32 Kbytes), and an extensive range of enhanced I/Os and peripherals connected to two APB buses.

The STM32L151xC/C-A and STM32L152xC/C-A devices offer two operational amplifiers, one 12-bit ADC, two DACs, two ultra-low-power comparators, one general-purpose 32-bit timer, six general-purpose 16-bit timers and two basic timers, which can be used as time bases.

Moreover, the STM32L151xC/C-A and STM32L152xC/C-A devices contain standard and advanced communication interfaces: up to two I2Cs, three SPIs, two I2S, three USARTs, and an USB. The STM32L151xC/C-A and STM32L152xC/C-A devices offer up to 23 capacitive sensing channels to simply add a touch sensing functionality to any application.

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

Finally, the integrated LCD controller (except STM32L151xC/C-A devices) has a built-in LCD voltage generator that allows to drive up to 8 multiplexed LCDs with the contrast independent of the supply voltage.

The ultra-low-power STM32L151xC/C-A and STM32L152xC/C-A 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 +85 °C and -40 to +105 °C temperature ranges. 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°C to 105°C temperature range
    • 305 nA standby mode (3 wakeup pins)
    • 1.15 μA standby mode + RTC
    • 0.475 μA stop mode (16 wakeup lines)
    • 1.35 μA stop mode + RTC
    • 11 μA Low-power run mode
    • 230 μA/MHz run mode
    • 10 nA ultra-low I/O leakage
    • 8 μs wakeup time
  • Core: Arm® Cortex® -M3 32-bit CPU
    • From 32 kHz up to 32 MHz max
    • 1.25 DMIPS/MHz (Dhrystone 2.1)
    • Memory protection unit
  • Up to 23 capacitive sensing channels
  • CRC calculation unit, 96-bit unique ID
  • Reset and supply management
    • Low-power, ultrasafe 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 factory-trimmed RC (+/- 1%)
    • 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
    • USB and USART supported
  • Serial wire debug, JTAG and trace
  • Up to 116 fast I/Os (102 I/Os 5V tolerant), all mappable on 16 external interrupt vectors
  • Memories
    • 256 Kbytes of Flash memory with ECC
    • 32 Kbytes of RAM
    • 8 Kbytes of true EEPROM with ECC
    • 128-byte backup register
  • LCD driver (except STM32L151xC/C-A devices) up to 8x40 segments, contrast adjustment, blinking mode, step-up converter
  • Rich analog peripherals (down to 1.8V)
    • 2x operational amplifiers
    • 12-bit ADC 1 Msps up to 40 channels
    • 12-bit DAC 2 ch with output buffers
    • 2x ultra-low-power-comparators(window mode and wake up capability)
  • DMA controller 12x channels
  • 9x peripheral communication interfaces
    • 1x USB 2.0 (internal 48 MHz PLL)
    • 3x USARTs
    • Up to 8x SPIs (2x I2S, 3x 16 Mbit/s)
    • 2x I2Cs (SMBus/PMBus)
  • 11x timers: 1x 32-bit, 6x 16-bit with up to 4 IC/OC/PWM channels, 2x 16-bit basic timers, 2x watchdog timers (independent and window)

电路原理图

资源

技术文档

产品规格
Description Version Size
Ultra-low-power 32b MCU Arm®-based Cortex®-M3, 256KB Flash, 32KB SRAM, 8KB EEPROM, LCD, USB, ADC, DAC 7.0 1 MB
应用手册
Description Version Size
使用 STM32 微控制器系列中的 DAC生成音频和波形 3.0 999 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
STM32L1xxx 硬件开发入门 7.2 716 KB
Guidelines for designing touch sensing applications with surface sensors 3.0 1 MB
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
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 STM32L1 and STM32L0 series microcontrollers 1.0 639 KB
从STM32L1 系列移植到 STM32L4 系列微控制器 5.0 729 KB
STM32 微控制器应用的移植和兼容性指南 3.1 713 KB
Migration of microcontroller applications from STM32F1 to STM32L1 series 2.1 312 KB
Oscillator design guide for STM8AF/AL/S and STM32 microcontrollers 11.0 2 MB
STM32 微控制器上的 PDM 音频软件解码 1.3 271 KB
Proprietary Code Read Out Protection on STM32L1 microcontrollers 1.1 284 KB
STM32 USART自动波特率检测 1.0 435 KB
STM32F1xx、STM32F2xx、STM32F4xx、STM32L1xx、STM32F30/31/37/38x 定时器概览 6.0 595 KB
STM32 microcontroller debug toolbox 2.0 5 MB
STM32™ 微控制器系统存储器自举模式 31.0 2 MB
STM32 专有代码保护概述 1.1 193 KB
STM32Cube firmware examples for STM32L1 Series 4.0 575 KB
STM32L1xx超低功耗功能概述 2.1 308 KB
Sampling capacitor selection guide for MCU based touch sensing applications 3.0 208 KB
Tuning a STMTouch-based application 3.0 783 KB
STM32™ 自举程序中使用的 USART 协议 7.0 1 MB
STM32 自举程序中使用的 USB DFU 协议 6.0 484 KB
Using STM32L1 analog comparators in application cases 3.1 317 KB
在 STM32 F0、F2、F3、F4 和 L1 系列MCU 中使用硬件实时时钟(RTC) 5.1 755 KB
Using the hardware real-time clock (RTC) in low-power modes with STM32 microcontrollers 3.0 1 MB
在 STM32 应用中虚拟增加串行通信外设数目 1.1 442 KB
Technical Notes & Articles
Description Version Size
Accurate power consumption estimation for STM32L1 series of ultra-low-power microcontrollers 2.1 343 KB
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
STM32L Cortex-M3 microcontroller for usage in low-power healthcare applications 1.2 357 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
参考手册
Description Version Size
STM32L100xx, STM32L151xx, STM32L152xx and STM32L162xx advanced ARM®-based 32-bit MCUs 15.0 12 MB
编程手册
Description Version Size
STM32F10xxx/20xxx/21xxx/L1xxxx Cortex-M3 programming manual 5.1 4 MB
勘误手册
Description Version Size
STM32L15xxD, STM32L15xxC and STM32L15xxC-A ultra-low-power device limitations 4.0 513 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 1.2 152 KB

演示和培训资料

简报
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 and STM8 Functional Safety Packages 2 1 MB
STM32L4+ MCU series - Excellence in ultra-low-power with more performance 1.0 1 MB
STM8L and STM32 L1 series - Ultra-low-power platform 2.0 789 KB

出版刊物和宣传资料

宣传册
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
手册
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
Semiconductor solutions for healthcare applications 1.0 665 KB
Magazine Articles
Description Version Size
Design & Elektronik magazine - Benchmark ULPBench debunked 1.1 12 MB
白皮书
Description Version Size
STM32 More Than a Core - Circuit Cellar, Tom Cantrell 1.0 355 KB

工具和软件

开发工具硬件
Hardware Development Tools
Software Development Tools
软件
Evaluation Tool Software
MCUs Embedded Software
评估工具
Product Evaluation Tools
支持和社区


样片和购买

型号 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
STM32L151QCH6 UFBGA 7X7X0.6 132L P 0.5 R 12X12 Tray -40 85 Active 3.7 10000 NEC 3A991A2 PHILIPPINES 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

质量和可靠性

型号 Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STM32L151QCH6 ActiveUFBGA 7X7X0.6 132L P 0.5 R 12X12IndustrialEcopack2 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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