STM32L051K8

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Ultra-low-power Arm Cortex-M0+ MCU with 64 Kbytes of Flash memory, 32 MHz CPU

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Product overview

Description

The access line ultra-low-power STM32L051x6/8 microcontrollers incorporate 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 (64 Kbytes of Flash program memory, 2 Kbytes of data EEPROM and 8 Kbytes of RAM) plus an extensive range of enhanced I/Os and peripherals.

The STM32L051x6/8 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 STM32L051x6/8 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 and one 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 STM32L051x6/8 devices embed standard and advanced communication interfaces: up to two I2C, two SPIs, one I2S, two USARTs, a low-power UART (LPUART), .

The STM32L051x6/8 also include a real-time clock and a set of backup registers that remain powered in Standby mode.

The ultra-low-power STM32L051x6/8 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
      • 0.27 µA Standby mode (2 wakeup pins)
      • 0.4 µA Stop mode (16 wakeup lines)
      • 0.8 µA Stop mode + RTC + 8-Kbyte RAM retention
      • 88 µA/MHz in Run mode
      • 3.5 µs wakeup time (from RAM)
      • 5 µs wakeup time (from Flash memory)
    • Core: Arm® 32-bit Cortex®-M0+ with MPU
      • From 32 kHz up to 32 MHz max.
      • 0.95 DMIPS/MHz
    • Memories
      • Up to 64-Kbyte Flash memory with ECC
      • 8-Kbyte RAM
      • 2 Kbytes of data EEPROM with ECC
      • 20-byte backup register
      • Sector protection against R/W operation
    • Up to 51 fast I/Os (45 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
      • PLL for CPU clock
    • Pre-programmed bootloader
      • USART, SPI supported
    • Development support
      • Serial wire debug supported
    • Rich Analog peripherals
      • 12-bit ADC 1.14 Msps up to 16 channels (down to 1.65 V)
      • 2x ultra-low-power comparators (window mode and wake up capability, down to 1.65 V)
    • 7-channel DMA controller, supporting ADC, SPI, I2C, USART, Timers
    • 7x peripheral communication interfaces
      • 2x USART (ISO 7816, IrDA), 1x UART (low power)
      • Up to 4x SPI 16 Mbits/s
      • 2x I2C (SMBus/PMBus)
    • 9x 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, 1x 16-bit basic, and 2x watchdogs (independent/window)
    • CRC calculation unit, 96-bit unique ID
    • All packages are ECOPACK2

Circuit Diagram

EDA Symbols, Footprints and 3D Models

STMicroelectronics - STM32L051K8

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Footprints

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3D models

Quality and Reliability

Part Number Marketing Status Package SMPS Grade RoHS Compliance Grade Material Declaration**
STM32L051K8T6
Active
LQFP 32 7x7x1.4 mm - Industrial Ecopack2
STM32L051K8T6TR
Active
LQFP 32 7x7x1.4 mm - Industrial Ecopack2
STM32L051K8T7
Active
LQFP 32 7x7x1.4 mm - Industrial Ecopack2
STM32L051K8U3
Active
UFQFPN 32 5x5x0.55 mm - Industrial Ecopack2
STM32L051K8U3TR
Active
UFQFPN 32 5x5x0.55 mm - Industrial Ecopack2
STM32L051K8U6
Active
UFQFPN 32 5x5x0.55 mm - Industrial Ecopack2
STM32L051K8U6DTR
Active
UFQFPN 32 5x5x0.55 mm - Industrial Ecopack2
STM32L051K8U6TR
Active
UFQFPN 32 5x5x0.55 mm - Industrial Ecopack2
STM32L051K8U7
Active
UFQFPN 32 5x5x0.55 mm - Industrial Ecopack2
STM32L051K8U7TR
Active
UFQFPN 32 5x5x0.55 mm - Industrial Ecopack2

STM32L051K8T6

Package:

LQFP 32 7x7x1.4 mm

Material Declaration**:

PDF

Marketing Status

Active

Package

LQFP 32 7x7x1.4 mm

SMPS

-

Grade

Industrial

STM32L051K8T6TR

Package:

LQFP 32 7x7x1.4 mm

Material Declaration**:

PDF

Marketing Status

Active

Package

LQFP 32 7x7x1.4 mm

SMPS

-

Grade

Industrial

STM32L051K8T7

Package:

LQFP 32 7x7x1.4 mm

Material Declaration**:

PDF

Marketing Status

Active

Package

LQFP 32 7x7x1.4 mm

SMPS

-

Grade

Industrial

STM32L051K8U3

Package:

UFQFPN 32 5x5x0.55 mm

Material Declaration**:

PDF XML

Marketing Status

Active

Package

UFQFPN 32 5x5x0.55 mm

SMPS

-

Grade

Industrial

STM32L051K8U3TR

Package:

UFQFPN 32 5x5x0.55 mm

Material Declaration**:

PDF XML

Marketing Status

Active

Package

UFQFPN 32 5x5x0.55 mm

SMPS

-

Grade

Industrial

STM32L051K8U6

Package:

UFQFPN 32 5x5x0.55 mm

Material Declaration**:

PDF XML

Marketing Status

Active

Package

UFQFPN 32 5x5x0.55 mm

SMPS

-

Grade

Industrial

STM32L051K8U6DTR

Package:

UFQFPN 32 5x5x0.55 mm

Material Declaration**:

PDF XML

Marketing Status

Active

Package

UFQFPN 32 5x5x0.55 mm

SMPS

-

Grade

Industrial

STM32L051K8U6TR

Package:

UFQFPN 32 5x5x0.55 mm

Material Declaration**:

PDF XML

Marketing Status

Active

Package

UFQFPN 32 5x5x0.55 mm

SMPS

-

Grade

Industrial

STM32L051K8U7

Package:

UFQFPN 32 5x5x0.55 mm

Material Declaration**:

PDF XML

Marketing Status

Active

Package

UFQFPN 32 5x5x0.55 mm

SMPS

-

Grade

Industrial

STM32L051K8U7TR

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
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ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Budgetary Price (US$)*/Qty
Country of Origin
Timers (typ) (16-bit)
Timers (typ) (32-bit)
Number of Channels (typ)
Number of Channels (typ)
Number of Channels (typ)
D/A Converters (typ) (12-bit)
Comparator
I/Os (High Current)
CAN
CAN FD (typ)
SPI (typ)
I2S (typ)
USART (typ)
UART (typ)
Integrated op-amps
SMPS
min
max
STM32L051K8U3 Available at distributors

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3A991.a.2 NEC Tray UFQFPN 32 5x5x0.55 mm -40 125

CHINA

4

-

10

-

-

-

2

27

-

-

1

-

2

-

-

-

STM32L051K8U3TR Available at distributors

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3A991.a.2 NEC Tape and Reel UFQFPN 32 5x5x0.55 mm - 125

CHINA

4

-

10

-

-

-

2

27

-

-

1

-

2

-

-

-

STM32L051K8U6 Available at distributors

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3A991.a.2 NEC Tray UFQFPN 32 5x5x0.55 mm -40 85

CHINA

4

-

10

-

-

-

2

27

-

-

1

-

2

-

-

-

STM32L051K8T6 Available at distributors

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3A991.a.2 NEC Tray LQFP 32 7x7x1.4 mm -40 85

CHINA

4

-

10

-

-

-

2

25

-

-

1

-

2

-

-

-

STM32L051K8T6TR Available at distributors

Distributor availability of STM32L051K8T6TR

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3A991.a.2 NEC Tape and Reel LQFP 32 7x7x1.4 mm -40 85

CHINA

4

-

10

-

-

-

2

25

-

-

1

-

2

-

-

-

STM32L051K8U6TR Available at distributors

Distributor availability of STM32L051K8U6TR

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

CHINA

4

-

10

-

-

-

2

27

-

-

1

-

2

-

-

-

STM32L051K8U7 Available at distributors

Distributor availability of STM32L051K8U7

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3A991.a.2 NEC Tray UFQFPN 32 5x5x0.55 mm -40 105

CHINA

4

-

10

-

-

-

2

27

-

-

1

-

2

-

-

-

STM32L051K8U7TR Available at distributors

Distributor availability of STM32L051K8U7TR

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

CHINA

4

-

10

-

-

-

2

27

-

-

1

-

2

-

-

-

STM32L051K8U6DTR Available at distributors

Distributor availability of STM32L051K8U6DTR

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Distributor reported inventory date:

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

CHINA

4

-

10

-

-

-

2

27

-

-

1

-

2

-

-

-

STM32L051K8T7 Available at distributors

Distributor availability of STM32L051K8T7

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

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

CHINA

4

-

10

-

-

-

2

25

-

-

1

-

2

-

-

-

STM32L051K8U3 Active

Package:
UFQFPN 32 5x5x0.55 mm
ECCN (US):
3A991.a.2
Budgetary Price (US$)*/Qty:
-

Part Number:

STM32L051K8U3

ECCN (EU):

NEC

Packing Type:

Tray

Operating Temperature (°C)

Min:

-40

Max:

125

Country of Origin:

CHINA

Timers (typ) (16-bit):

4

Timers (typ) (32-bit):

-

Number of Channels (typ):

10

Number of Channels (typ):

-

Number of Channels (typ):

-

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

-

Comparator:

2

I/Os (High Current):

27

CAN:

-

CAN FD (typ):

-

SPI (typ):

1

I2S (typ):

-

USART (typ):

2

UART (typ):

-

Integrated op-amps:

-

SMPS:

-

STM32L051K8U3TR Active

Package:
UFQFPN 32 5x5x0.55 mm
ECCN (US):
3A991.a.2
Budgetary Price (US$)*/Qty:
-

Part Number:

STM32L051K8U3TR

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-

Max:

125

Country of Origin:

CHINA

Timers (typ) (16-bit):

4

Timers (typ) (32-bit):

-

Number of Channels (typ):

10

Number of Channels (typ):

-

Number of Channels (typ):

-

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

-

Comparator:

2

I/Os (High Current):

27

CAN:

-

CAN FD (typ):

-

SPI (typ):

1

I2S (typ):

-

USART (typ):

2

UART (typ):

-

Integrated op-amps:

-

SMPS:

-

STM32L051K8U6 Active

Package:
UFQFPN 32 5x5x0.55 mm
ECCN (US):
3A991.a.2
Budgetary Price (US$)*/Qty:
-

Part Number:

STM32L051K8U6

ECCN (EU):

NEC

Packing Type:

Tray

Operating Temperature (°C)

Min:

-40

Max:

85

Country of Origin:

CHINA

Timers (typ) (16-bit):

4

Timers (typ) (32-bit):

-

Number of Channels (typ):

10

Number of Channels (typ):

-

Number of Channels (typ):

-

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

-

Comparator:

2

I/Os (High Current):

27

CAN:

-

CAN FD (typ):

-

SPI (typ):

1

I2S (typ):

-

USART (typ):

2

UART (typ):

-

Integrated op-amps:

-

SMPS:

-

Distributor Name

Distributor reported inventory date:

STM32L051K8T6 Active

Package:
LQFP 32 7x7x1.4 mm
ECCN (US):
3A991.a.2
Budgetary Price (US$)*/Qty:
-

Part Number:

STM32L051K8T6

ECCN (EU):

NEC

Packing Type:

Tray

Operating Temperature (°C)

Min:

-40

Max:

85

Country of Origin:

CHINA

Timers (typ) (16-bit):

4

Timers (typ) (32-bit):

-

Number of Channels (typ):

10

Number of Channels (typ):

-

Number of Channels (typ):

-

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

-

Comparator:

2

I/Os (High Current):

25

CAN:

-

CAN FD (typ):

-

SPI (typ):

1

I2S (typ):

-

USART (typ):

2

UART (typ):

-

Integrated op-amps:

-

SMPS:

-

Distributor Name

Distributor reported inventory date:

STM32L051K8T6TR Active

Package:
LQFP 32 7x7x1.4 mm
ECCN (US):
3A991.a.2
Budgetary Price (US$)*/Qty:
-

Part Number:

STM32L051K8T6TR

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

85

Country of Origin:

CHINA

Timers (typ) (16-bit):

4

Timers (typ) (32-bit):

-

Number of Channels (typ):

10

Number of Channels (typ):

-

Number of Channels (typ):

-

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

-

Comparator:

2

I/Os (High Current):

25

CAN:

-

CAN FD (typ):

-

SPI (typ):

1

I2S (typ):

-

USART (typ):

2

UART (typ):

-

Integrated op-amps:

-

SMPS:

-

Distributor Name

Distributor reported inventory date:

STM32L051K8U6TR Active

Package:
UFQFPN 32 5x5x0.55 mm
ECCN (US):
3A991.a.2
Budgetary Price (US$)*/Qty:
-

Part Number:

STM32L051K8U6TR

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

85

Country of Origin:

CHINA

Timers (typ) (16-bit):

4

Timers (typ) (32-bit):

-

Number of Channels (typ):

10

Number of Channels (typ):

-

Number of Channels (typ):

-

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

-

Comparator:

2

I/Os (High Current):

27

CAN:

-

CAN FD (typ):

-

SPI (typ):

1

I2S (typ):

-

USART (typ):

2

UART (typ):

-

Integrated op-amps:

-

SMPS:

-

STM32L051K8U7 Active

Package:
UFQFPN 32 5x5x0.55 mm
ECCN (US):
3A991.a.2
Budgetary Price (US$)*/Qty:
-

Part Number:

STM32L051K8U7

ECCN (EU):

NEC

Packing Type:

Tray

Operating Temperature (°C)

Min:

-40

Max:

105

Country of Origin:

CHINA

Timers (typ) (16-bit):

4

Timers (typ) (32-bit):

-

Number of Channels (typ):

10

Number of Channels (typ):

-

Number of Channels (typ):

-

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

-

Comparator:

2

I/Os (High Current):

27

CAN:

-

CAN FD (typ):

-

SPI (typ):

1

I2S (typ):

-

USART (typ):

2

UART (typ):

-

Integrated op-amps:

-

SMPS:

-

STM32L051K8U7TR Active

Package:
UFQFPN 32 5x5x0.55 mm
ECCN (US):
3A991.a.2
Budgetary Price (US$)*/Qty:
-

Part Number:

STM32L051K8U7TR

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

105

Country of Origin:

CHINA

Timers (typ) (16-bit):

4

Timers (typ) (32-bit):

-

Number of Channels (typ):

10

Number of Channels (typ):

-

Number of Channels (typ):

-

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

-

Comparator:

2

I/Os (High Current):

27

CAN:

-

CAN FD (typ):

-

SPI (typ):

1

I2S (typ):

-

USART (typ):

2

UART (typ):

-

Integrated op-amps:

-

SMPS:

-

STM32L051K8U6DTR Active

Package:
UFQFPN 32 5x5x0.55 mm
ECCN (US):
3A991.a.2
Budgetary Price (US$)*/Qty:
-

Part Number:

STM32L051K8U6DTR

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

85

Country of Origin:

CHINA

Timers (typ) (16-bit):

4

Timers (typ) (32-bit):

-

Number of Channels (typ):

10

Number of Channels (typ):

-

Number of Channels (typ):

-

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

-

Comparator:

2

I/Os (High Current):

27

CAN:

-

CAN FD (typ):

-

SPI (typ):

1

I2S (typ):

-

USART (typ):

2

UART (typ):

-

Integrated op-amps:

-

SMPS:

-

STM32L051K8T7 Active

Package:
LQFP 32 7x7x1.4 mm
ECCN (US):
3A991.a.2
Budgetary Price (US$)*/Qty:
-

Part Number:

STM32L051K8T7

ECCN (EU):

NEC

Packing Type:

Tray

Operating Temperature (°C)

Min:

-40

Max:

105

Country of Origin:

CHINA

Timers (typ) (16-bit):

4

Timers (typ) (32-bit):

-

Number of Channels (typ):

10

Number of Channels (typ):

-

Number of Channels (typ):

-

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

-

Comparator:

2

I/Os (High Current):

25

CAN:

-

CAN FD (typ):

-

SPI (typ):

1

I2S (typ):

-

USART (typ):

2

UART (typ):

-

Integrated op-amps:

-

SMPS:

-

Distributor Name

Distributor reported inventory date:

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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