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STM32L151VB

Ultra-low-power ARM Cortex-M3 MCU with 128 Kbytes Flash, 32 MHz CPU, USB
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The ultralow power STM32L15xxx incorporates the connectivity power of the universal serial bus (USB) with the high-performance ARM Cortex-M3 32-bit RISC core operating at a 32 MHz frequency, a memory protection unit (MPU), high-speed embedded memories (Flash memory up to 128 Kbytes and RAM up to 16 Kbytes) and an extensive range of enhanced I/Os and peripherals connected to two APB buses.

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

Moreover, the STM32L15xxx devices contain standard and advanced communication interfaces: up to two I2Cs and SPIs, three USARTs and a USB. The STM32L15xxx devices offer up to 20 capacitive sensing channels to simply add 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 has a built-in LCD voltage generator that allows you to drive up to 8 multiplexed LCDs with contrast independent of the supply voltage.

The ultralow power STM32L15xxx operates 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. It is available in the -40 to +85 °C temperature range, extended to 105°C in low power dissipation state. A comprehensive set of power-saving modes allows the design of low-power applications.

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Errata Sheet
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Datasheet

Key Features

  • Ultra-low-power platform
  • 1.65 V to 3.6 V power supply
  • -40°C to 85°C/105°C temperature range
  • 0.3 μA Standby mode (3 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: ARM®Cortex-M3 32-bit CPU
  • From 32 kHz up to 32 MHz max
  • 33.3 DMIPS peak (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 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
  • USART supported
  • Development support
  • Serial wire debug supported
  • JTAG and trace supported
  • Up to 83 fast I/Os (73 I/Os 5V tolerant), all mappable on 16 external interrupt vectors
  • Memories
  • Up to 128 KB Flash with ECC
  • Up to 16 KB RAM
  • Up to 4 KB of true EEPROM with ECC
  • 80 Byte Backup Register
  • LCD Driver for up to 8x40 segments
  • Support contrast adjustment
  • Support blinking mode
  • Step-up converter on board
  • Rich analog peripherals (down to 1.8 V)
  • 12-bit ADC 1 Msps up to 24 channels
  • 12-bit DAC 2 channels with output buffers
  • 2x Ultra-low-power-comparators(window mode and wake up capability)
  • DMA controller 7x channels
  • 8x peripherals communication interface
  • 1x USB 2.0 (internal 48 MHz PLL)
  • 3x USART (ISO 7816, IrDA)
  • 2x SPI 16 Mbits/s
  • 2x I2C (SMBus/PMBus)
  • 10x timers: 6x 16-bit with up to 4 IC/OC/PWM channels, 2x 16-bit basic timer, 2x watchdog timers (independent and window)
  • Up to 20 capacitive sensing channels supporting touchkey, linear and rotary touch sensors
  • CRC calculation unit, 96-bit unique ID

Circuit Diagram

Design Resources

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Technical Documentation

Product Specifications

Description Version Size
pdf
DS6876: Ultra-low-power 32-bit MCU ARM-based Cortex®-M3, 128KB Flash, 16KB SRAM, 4KB EEPROM, LCD, USB, ADC, DAC
10.0 1,962 KB

Application Notes

Description Version Size
pdf
AN1181: Electrostatic discharge sensitivity measurement
1.4 59 KB
pdf
AN1709: EMC design guide for ST microcontrollers
1.7 657 KB
pdf
AN2606: STM32™ microcontroller system memory boot mode
19.0 1,871 KB
pdf
AN2834: How to get the best ADC accuracy in STM32Fx Series and STM32L1 Series devices
2.0 846 KB
pdf
AN2869: Guidelines for designing touch sensing applications
6.1 977 KB
pdf
AN3155: USART protocol used in the STM32 bootloader
6.0 1,157 KB
pdf
AN3193: STM32L1xx ultralow power features overview
2.0 234 KB
pdf
AN3216: Getting started with STM32L1xxx hardware development
7.0 674 KB
pdf
AN3236: Guidelines to increase the number of touch sensing touchkeys
3.0 310 KB
pdf
AN3248: Using STM32L1 analog comparators in application cases
3.0 318 KB
pdf
AN3307: Guidelines for obtaining IEC 60335 Class B certification for any STM32 application
4.0 431 KB
pdf
AN3364: Migration and compatibility guidelines for STM32 microcontroller applications
3.0 128 KB
pdf
AN3371: Using the hardware real-time clock (RTC) in STM32 F0, F2, F3, F4 and L1 series of MCUs
5.0 422 KB
pdf
AN3413: STM32L1x current consumption measurement and touch sensing demonstration firmware
2.0 319 KB
pdf
AN3422: Migration of microcontroller applications from STM32F1 to STM32L1 series
2.0 312 KB
pdf
AN3429: STM32 proprietary code protection overview
1.1 60 KB
pdf
AN3998: PDM audio software decoding on STM32 microcontrollers
1.2 91 KB
pdf
AN4013: STM32F0, STM32F1, STM32F2, STM32F4, STM32L1 series, STM32F30xC/Bx, STM32F358xC, STM32F37x, timer overview
3.0 407 KB
pdf
AN4229: How to implement a vocoder solution using STM32 microcontrollers
1.0 467 KB
pdf
AN4310: Sampling capacitor selection guide for MCU based touch sensing applications
2.0 175 KB
pdf
AN4312: Guidelines for designing touch sensing applications with surface sensors
1.0 973 KB
pdf
AN4316: Tuning a STMTouch-based application
2.0 1,178 KB
pdf
AN4566: Extending the DAC performance of STM32 microcontrollers
1.0 364 KB

Technical Notes & Articles

Description Version Size
pdf
TA0340: STM32L Cortex-M3 microcontroller for usage in low-power healthcare applications
1.0 358 KB
pdf
TA0342: Accurate power consumption estimation for STM32L1 series of ultra-low-power microcontrollers
2.0 343 KB
pdf
TN0830: How to use EWARM 6.2x with projects built with EWARM 6.1 and previous versions
1.1 97 KB
pdf
TN1176: Migrating from STM32L15xx6/8/B to STM32L15xx6/8/B-A and from STM32L100x6/8/B to STM32L100x6/8/B-A
1.0 265 KB

Reference Manual

Description Version Size
pdf
RM0038: STM32L100xx, STM32L151xx, STM32L152xx and STM32L162xx advanced ARM®-based 32-bit MCUs
11.0 15,196 KB

Programming Manual

Description Version Size
pdf
PM0056: STM32F10xxx/20xxx/21xxx/L1xxxx Cortex-M3 programming manual
5.0 4,101 KB

Errata Sheet

Description Version Size
pdf
ES0125: STM32L100x6/8/B, STM32L151x6/8/B and STM32L152x6/8/B ultra-low-power MCU limitations
10.0 402 KB

HW Model & CAD Libraries

HW Model & CAD Libraries

Description Version Size
zip
STM32 Boundary Scan Description Language (BSDL) files
3.0.0 195 KB

Presentations & Training Material

Presentations

Description Version Size
pdf
Fire alarms and smoke detectors - Application guide
1.0.0 336 KB
pdf
STM32 Embedded Software
1.0.0 571 KB
pdf
STM32 and STM8 embedded software solutions
3.0 1,771 KB
pdf
STM8L and STM32 L1 series - Ultra-low-power platform
790 KB

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pdf
STM32 32-bit MCU family
2,651 KB
pdf
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1.0 2,572 KB

Brochure

Description Version Size
pdf
Products and solutions for Factory automation and Control
4,504 KB
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1.0 665 KB

White Paper

Description Version Size
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STM32 More Than a Core - Circuit Cellar, Tom Cantrell
1.0 355 KB

Sample & Buy

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Part Number Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) Order From STUnit Price (US$)*
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Material Declaration**
STM32L151VBH6ActiveUFBGA 100 7x7x0.6Tray-4085-Distributor reported inventory date: 2014-12-20
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA2430
ARROWOrder NowEUROPE24960
Farnell Element14Order NowEUROPE19781
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STM32L151VBH6DActiveUFBGA 100 7x7x0.6Tray-4085-No availability reported, please contact our Sales officeEcopack2-
STM32L151VBT6ActiveLQFP 100 14x14x1.4Tray-4085-Distributor reported inventory date: 2014-12-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA540540
AVNETOrder NowAMERICA2160
ARROWOrder NowEUROPE400
Farnell Element14Order NowEUROPE561
RS COMPONENTSOrder NowEUROPE901
DIGIKEYOrder NowWORLDWIDE8711
FUTUREOrder NowWORLDWIDE5401
MOUSEROrder NowWORLDWIDE4871
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STM32L151VBT6TRActiveLQFP 100 14x14x1.4Tape And Reel-4085-No availability reported, please contact our Sales officeEcopack2-

(*) 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
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