STM32L031K6

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

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Product overview

Description

The access line ultra-low-power STM32L031x4/6 family incorporates the high-performance ARM® Cortex®-M0+ 32-bit RISC core operating at a 32 MHz frequency, high-speed embedded memories (up to 32 Kbytes of Flash program memory, 1 Kbytes of data EEPROM and 8 Kbytes of RAM) plus an extensive range of enhanced I/Os and peripherals.

The STM32L031x4/6 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 STM32L031x4/6 devices offer several analog features, one 12-bit ADC with hardware oversampling, two ultra-low-power comparators, several timers, one low-power timer (LPTIM), three general-purpose 16-bit timers, 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 STM32L031x4/6 devices embed standard and advanced communication interfaces: one I2C, one SPI, one USART, and a low-power UART (LPUART).

The STM32L031x4/6 also include a real-time clock and a set of backup registers that remain powered in Standby mode.

The ultra-low-power STM32L031x4/6 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.

  • All features

    • Ultra-low-power platform
      • 1.65 V to 3.6 V power supply
      • -40 to 125 °C temperature range
      • 0.25 μA Standby mode (2 wakeup pins)
      • 0.38 μA Stop mode (16 wakeup lines)
      • 0.68 μA Stop mode + RTC + 8 KB RAM retention
      • Down to 76 μA/MHz in Run mode
      • 5 μs wakeup time (from Flash memory)
      • 41 μA 12-bit ADC conversion (at 10ksps)
    • Core: ARM® 32-bit Cortex®-M0+
      • From 32 kHz up to 32 MHz max.
      • 0.95 DMIPS/MHz
      • Ultra-safe, low-power BOR (brownout reset) with 5 selectable thresholds
      • Ultralow 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
    • Pre-programmed bootloader
      • USART, SPI supported
    • Development support
      • Serial wire debug supported
    • Up to 38 fast I/Os (31 I/Os 5V tolerant)
    • Memories
      • Up to 32 KB Flash with ECC
      • 8 KB RAM
      • 1 KB of data EEPROM with ECC
      • 20-byte backup register
      • Sector protection against R/W operation
    • Rich Analog peripherals
      • 12-bit ADC 1.14 Msps up to 10 channels (down to 1.65 V)
      • 2x ultra-low-power comparators (window mode and wake up capability, down to 1.8 V)
    • 7-channel DMA controller, supporting ADC, SPI, I2C, USART, Timers
    • 5x peripherals communication interface
    • 1x USART (ISO 7816, IrDA), 1x UART (low power)
    • 1x SPI 16 Mbits/s
    • 1x I2C (SMBus/PMBus)
    • 8x timers: 1x 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 and 2x watchdogs (independent/window)
    • CRC calculation unit, 96-bit unique ID
    • All packages are ECOPACK®2

Circuit Diagram

EDA Symbols, Footprints and 3D Models

STMicroelectronics - STM32L031K6

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3D models

Quality and Reliability

Part Number Marketing Status Package SMPS Grade RoHS Compliance Grade Material Declaration**
STM32L031K6T3
Active
LQFP 32 7x7x1.4 mm - Industrial Ecopack2
STM32L031K6T3TR
Active
LQFP 32 7x7x1.4 mm - Industrial Ecopack2
STM32L031K6T6
Active
LQFP 32 7x7x1.4 mm - Industrial Ecopack2
STM32L031K6T6TR
Active
LQFP 32 7x7x1.4 mm - Industrial Ecopack2
STM32L031K6T7
Active
LQFP 32 7x7x1.4 mm - Industrial Ecopack2
STM32L031K6U3
Active
UFQFPN 32 5x5x0.55 mm - Industrial Ecopack2
STM32L031K6U3TR
Active
UFQFPN 32 5x5x0.55 mm - Industrial Ecopack2
STM32L031K6U6
Active
UFQFPN 32 5x5x0.55 mm - Industrial Ecopack2
STM32L031K6U6TR
Active
UFQFPN 32 5x5x0.55 mm - Industrial Ecopack2
STM32L031K6U7
Active
UFQFPN 32 5x5x0.55 mm - Industrial Ecopack2

STM32L031K6T3

Package:

LQFP 32 7x7x1.4 mm

Material Declaration**:

Marketing Status

Active

Package

LQFP 32 7x7x1.4 mm

SMPS

-

Grade

Industrial

STM32L031K6T3TR

Package:

LQFP 32 7x7x1.4 mm

Material Declaration**:

Marketing Status

Active

Package

LQFP 32 7x7x1.4 mm

SMPS

-

Grade

Industrial

STM32L031K6T6

Package:

LQFP 32 7x7x1.4 mm

Material Declaration**:

PDF XML

Marketing Status

Active

Package

LQFP 32 7x7x1.4 mm

SMPS

-

Grade

Industrial

STM32L031K6T6TR

Package:

LQFP 32 7x7x1.4 mm

Material Declaration**:

PDF XML

Marketing Status

Active

Package

LQFP 32 7x7x1.4 mm

SMPS

-

Grade

Industrial

STM32L031K6T7

Package:

LQFP 32 7x7x1.4 mm

Material Declaration**:

PDF XML

Marketing Status

Active

Package

LQFP 32 7x7x1.4 mm

SMPS

-

Grade

Industrial

STM32L031K6U3

Package:

UFQFPN 32 5x5x0.55 mm

Material Declaration**:

PDF XML

Marketing Status

Active

Package

UFQFPN 32 5x5x0.55 mm

SMPS

-

Grade

Industrial

STM32L031K6U3TR

Package:

UFQFPN 32 5x5x0.55 mm

Material Declaration**:

PDF XML

Marketing Status

Active

Package

UFQFPN 32 5x5x0.55 mm

SMPS

-

Grade

Industrial

STM32L031K6U6

Package:

UFQFPN 32 5x5x0.55 mm

Material Declaration**:

PDF XML

Marketing Status

Active

Package

UFQFPN 32 5x5x0.55 mm

SMPS

-

Grade

Industrial

STM32L031K6U6TR

Package:

UFQFPN 32 5x5x0.55 mm

Material Declaration**:

PDF XML

Marketing Status

Active

Package

UFQFPN 32 5x5x0.55 mm

SMPS

-

Grade

Industrial

STM32L031K6U7

Package:

UFQFPN 32 5x5x0.55 mm

Material Declaration**:

PDF XML

Marketing Status

Active

Package

UFQFPN 32 5x5x0.55 mm

SMPS

-

Grade

Industrial

(**) 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.

Sample & Buy

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Part Number
Marketing Status
Budgetary Price (US$)*/Qty
Order from ST
Order from distributors
Package
Packing Type
RoHS
Country of Origin
ECCN (US)
ECCN (EU)
Temperature (°C)
D/A Converters (typ) (12-bit)
Timers (typ) (16-bit)
Timers (typ) (32-bit)
Number of Channels (typ)
SMPS
Number of Channels (typ)
UART (typ)
I/Os (High Current)
Integrated op-amps
Comparator
SPI (typ)
USART (typ)
Number of Channels (typ)
I2S (typ)
Operating Temperature (°C) (min)
Advanced Motor Control Timers
CAN (2.0)
CAN (FD)
min
max
STM32L031K6T6TR
Available at distributors

Distributor availability of STM32L031K6T6TR

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Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
LQFP 32 7x7x1.4 mm Tape and Reel CHINA 3A991.a.2 NEC -40 85

-

3

-

-

-

-

-

25

-

2

1

1

10

-

-40

-

-

-

STM32L031K6T3TR
Available at distributors

Distributor availability of STM32L031K6T3TR

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Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
LQFP 32 7x7x1.4 mm Tape and Reel CHINA 3A991.a.2 NEC -40 125

-

3

-

-

-

-

-

25

-

2

1

1

10

-

-40

-

-

-

STM32L031K6U6TR
Available at distributors

Distributor availability of STM32L031K6U6TR

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Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
UFQFPN 32 5x5x0.55 mm Tape and Reel CHINA 3A991.a.2 NEC -40 85

-

3

-

-

-

-

-

27

-

2

1

1

10

-

-40

-

-

-

STM32L031K6U6
Available at distributors

Distributor availability of STM32L031K6U6

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Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
UFQFPN 32 5x5x0.55 mm Tray CHINA 3A991.a.2 NEC -40 85

-

3

-

-

-

-

-

27

-

2

1

1

10

-

-40

-

-

-

STM32L031K6U3TR
Available at distributors

Distributor availability of STM32L031K6U3TR

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Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
UFQFPN 32 5x5x0.55 mm Tape and Reel CHINA 3A991.a.2 NEC -40 125

-

3

-

-

-

-

-

27

-

2

1

1

10

-

-40

-

-

-

STM32L031K6T7
Available at distributors

Distributor availability of STM32L031K6T7

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
LQFP 32 7x7x1.4 mm Tray CHINA 3A991.a.2 NEC -40 105

-

3

-

-

-

-

-

25

-

2

1

1

10

-

-40

-

-

-

STM32L031K6U7
Available at distributors

Distributor availability of STM32L031K6U7

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
UFQFPN 32 5x5x0.55 mm Tray CHINA 3A991.a.2 NEC -40 105

-

3

-

-

-

-

-

27

-

2

1

1

10

-

-40

-

-

-

STM32L031K6T3
Available at distributors

Distributor availability of STM32L031K6T3

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
LQFP 32 7x7x1.4 mm Tray CHINA 3A991.a.2 NEC -40 125

-

3

-

-

-

-

-

25

-

2

1

1

10

-

-40

-

-

-

STM32L031K6T6
Available at distributors

Distributor availability of STM32L031K6T6

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
LQFP 32 7x7x1.4 mm Tray CHINA 3A991.a.2 NEC -40 85

-

3

-

-

-

-

-

25

-

2

1

1

10

-

-40

-

-

-

STM32L031K6U3
Available at distributors

Distributor availability of STM32L031K6U3

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
UFQFPN 32 5x5x0.55 mm Tray CHINA 3A991.a.2 NEC -40 125

-

3

-

-

-

-

-

27

-

2

1

1

10

-

-40

-

-

-

STM32L031K6T6TR Active

Budgetary Price (US$)*/Qty:
-
Package:
LQFP 32 7x7x1.4 mm
Packing Type:
Tape and Reel
RoHS:
-
Country of Origin:
CHINA
ECCN (US):
3A991.a.2
ECCN (EU):
NEC

Part Number:

STM32L031K6T6TR

D/A Converters (typ) (12-bit):

-

Timers (typ) (16-bit):

3

Timers (typ) (32-bit):

-

Number of Channels (typ):

-

SMPS:

-

Number of Channels (typ):

-

UART (typ):

-

I/Os (High Current):

25

Integrated op-amps:

-

Comparator:

2

SPI (typ):

1

USART (typ):

1

Number of Channels (typ):

10

I2S (typ):

-

Operating Temperature (°C)

Min:

-40

Max:

85

Advanced Motor Control Timers:

-

CAN (2.0):

-

CAN (FD):

-

Distributor Name

Distributor reported inventory date:

STM32L031K6T3TR Active

Budgetary Price (US$)*/Qty:
-
Package:
LQFP 32 7x7x1.4 mm
Packing Type:
Tape and Reel
RoHS:
-
Country of Origin:
CHINA
ECCN (US):
3A991.a.2
ECCN (EU):
NEC

Part Number:

STM32L031K6T3TR

D/A Converters (typ) (12-bit):

-

Timers (typ) (16-bit):

3

Timers (typ) (32-bit):

-

Number of Channels (typ):

-

SMPS:

-

Number of Channels (typ):

-

UART (typ):

-

I/Os (High Current):

25

Integrated op-amps:

-

Comparator:

2

SPI (typ):

1

USART (typ):

1

Number of Channels (typ):

10

I2S (typ):

-

Operating Temperature (°C)

Min:

-40

Max:

125

Advanced Motor Control Timers:

-

CAN (2.0):

-

CAN (FD):

-

STM32L031K6U6TR Active

Budgetary Price (US$)*/Qty:
-
Package:
UFQFPN 32 5x5x0.55 mm
Packing Type:
Tape and Reel
RoHS:
-
Country of Origin:
CHINA
ECCN (US):
3A991.a.2
ECCN (EU):
NEC

Part Number:

STM32L031K6U6TR

D/A Converters (typ) (12-bit):

-

Timers (typ) (16-bit):

3

Timers (typ) (32-bit):

-

Number of Channels (typ):

-

SMPS:

-

Number of Channels (typ):

-

UART (typ):

-

I/Os (High Current):

27

Integrated op-amps:

-

Comparator:

2

SPI (typ):

1

USART (typ):

1

Number of Channels (typ):

10

I2S (typ):

-

Operating Temperature (°C)

Min:

-40

Max:

85

Advanced Motor Control Timers:

-

CAN (2.0):

-

CAN (FD):

-

Distributor Name

Distributor reported inventory date:

STM32L031K6U6 Active

Budgetary Price (US$)*/Qty:
-
Package:
UFQFPN 32 5x5x0.55 mm
Packing Type:
Tray
RoHS:
-
Country of Origin:
CHINA
ECCN (US):
3A991.a.2
ECCN (EU):
NEC

Part Number:

STM32L031K6U6

D/A Converters (typ) (12-bit):

-

Timers (typ) (16-bit):

3

Timers (typ) (32-bit):

-

Number of Channels (typ):

-

SMPS:

-

Number of Channels (typ):

-

UART (typ):

-

I/Os (High Current):

27

Integrated op-amps:

-

Comparator:

2

SPI (typ):

1

USART (typ):

1

Number of Channels (typ):

10

I2S (typ):

-

Operating Temperature (°C)

Min:

-40

Max:

85

Advanced Motor Control Timers:

-

CAN (2.0):

-

CAN (FD):

-

Distributor Name

Distributor reported inventory date:

STM32L031K6U3TR Active

Budgetary Price (US$)*/Qty:
-
Package:
UFQFPN 32 5x5x0.55 mm
Packing Type:
Tape and Reel
RoHS:
-
Country of Origin:
CHINA
ECCN (US):
3A991.a.2
ECCN (EU):
NEC

Part Number:

STM32L031K6U3TR

D/A Converters (typ) (12-bit):

-

Timers (typ) (16-bit):

3

Timers (typ) (32-bit):

-

Number of Channels (typ):

-

SMPS:

-

Number of Channels (typ):

-

UART (typ):

-

I/Os (High Current):

27

Integrated op-amps:

-

Comparator:

2

SPI (typ):

1

USART (typ):

1

Number of Channels (typ):

10

I2S (typ):

-

Operating Temperature (°C)

Min:

-40

Max:

125

Advanced Motor Control Timers:

-

CAN (2.0):

-

CAN (FD):

-

Distributor Name

Distributor reported inventory date:

STM32L031K6T7 Active

Budgetary Price (US$)*/Qty:
-
Package:
LQFP 32 7x7x1.4 mm
Packing Type:
Tray
RoHS:
-
Country of Origin:
CHINA
ECCN (US):
3A991.a.2
ECCN (EU):
NEC

Part Number:

STM32L031K6T7

D/A Converters (typ) (12-bit):

-

Timers (typ) (16-bit):

3

Timers (typ) (32-bit):

-

Number of Channels (typ):

-

SMPS:

-

Number of Channels (typ):

-

UART (typ):

-

I/Os (High Current):

25

Integrated op-amps:

-

Comparator:

2

SPI (typ):

1

USART (typ):

1

Number of Channels (typ):

10

I2S (typ):

-

Operating Temperature (°C)

Min:

-40

Max:

105

Advanced Motor Control Timers:

-

CAN (2.0):

-

CAN (FD):

-

Distributor Name

Distributor reported inventory date:

STM32L031K6U7 Active

Budgetary Price (US$)*/Qty:
-
Package:
UFQFPN 32 5x5x0.55 mm
Packing Type:
Tray
RoHS:
-
Country of Origin:
CHINA
ECCN (US):
3A991.a.2
ECCN (EU):
NEC

Part Number:

STM32L031K6U7

D/A Converters (typ) (12-bit):

-

Timers (typ) (16-bit):

3

Timers (typ) (32-bit):

-

Number of Channels (typ):

-

SMPS:

-

Number of Channels (typ):

-

UART (typ):

-

I/Os (High Current):

27

Integrated op-amps:

-

Comparator:

2

SPI (typ):

1

USART (typ):

1

Number of Channels (typ):

10

I2S (typ):

-

Operating Temperature (°C)

Min:

-40

Max:

105

Advanced Motor Control Timers:

-

CAN (2.0):

-

CAN (FD):

-

Distributor Name

Distributor reported inventory date:

STM32L031K6T3 Active

Budgetary Price (US$)*/Qty:
-
Package:
LQFP 32 7x7x1.4 mm
Packing Type:
Tray
RoHS:
-
Country of Origin:
CHINA
ECCN (US):
3A991.a.2
ECCN (EU):
NEC

Part Number:

STM32L031K6T3

D/A Converters (typ) (12-bit):

-

Timers (typ) (16-bit):

3

Timers (typ) (32-bit):

-

Number of Channels (typ):

-

SMPS:

-

Number of Channels (typ):

-

UART (typ):

-

I/Os (High Current):

25

Integrated op-amps:

-

Comparator:

2

SPI (typ):

1

USART (typ):

1

Number of Channels (typ):

10

I2S (typ):

-

Operating Temperature (°C)

Min:

-40

Max:

125

Advanced Motor Control Timers:

-

CAN (2.0):

-

CAN (FD):

-

STM32L031K6T6 Active

Budgetary Price (US$)*/Qty:
-
Package:
LQFP 32 7x7x1.4 mm
Packing Type:
Tray
RoHS:
-
Country of Origin:
CHINA
ECCN (US):
3A991.a.2
ECCN (EU):
NEC

Part Number:

STM32L031K6T6

D/A Converters (typ) (12-bit):

-

Timers (typ) (16-bit):

3

Timers (typ) (32-bit):

-

Number of Channels (typ):

-

SMPS:

-

Number of Channels (typ):

-

UART (typ):

-

I/Os (High Current):

25

Integrated op-amps:

-

Comparator:

2

SPI (typ):

1

USART (typ):

1

Number of Channels (typ):

10

I2S (typ):

-

Operating Temperature (°C)

Min:

-40

Max:

85

Advanced Motor Control Timers:

-

CAN (2.0):

-

CAN (FD):

-

Distributor Name

Distributor reported inventory date:

STM32L031K6U3 Active

Budgetary Price (US$)*/Qty:
-
Package:
UFQFPN 32 5x5x0.55 mm
Packing Type:
Tray
RoHS:
-
Country of Origin:
CHINA
ECCN (US):
3A991.a.2
ECCN (EU):
NEC

Part Number:

STM32L031K6U3

D/A Converters (typ) (12-bit):

-

Timers (typ) (16-bit):

3

Timers (typ) (32-bit):

-

Number of Channels (typ):

-

SMPS:

-

Number of Channels (typ):

-

UART (typ):

-

I/Os (High Current):

27

Integrated op-amps:

-

Comparator:

2

SPI (typ):

1

USART (typ):

1

Number of Channels (typ):

10

I2S (typ):

-

Operating Temperature (°C)

Min:

-40

Max:

125

Advanced Motor Control Timers:

-

CAN (2.0):

-

CAN (FD):

-

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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors