STM32L431VC

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Ultra-low-power with FPU Arm Cortex-M4 MCU 80 MHz with 256 Kbytes of Flash memory

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Product overview

Description

The STM32L431xx devices are the ultra-low-power microcontrollers based on the high-performance Arm® Cortex®-M4 32-bit RISC core operating at a frequency of up to 80 MHz. The Cortex-M4 core features a Floating point unit (FPU) single precision which supports all Arm® single-precision data-processing instructions and data types. It also implements a full set of DSP instructions and a memory protection unit (MPU) which enhances application security.

The STM32L431xx devices embed high-speed memories (Flash memory up to 256 Kbyte, 64 Kbyte of SRAM), a Quad SPI flash memories interface (available on all packages) and an extensive range of enhanced I/Os and peripherals connected to two APB buses, two AHB buses and a 32-bit multi-AHB bus matrix.

The STM32L431xx devices embed several protection mechanisms for embedded Flash memory and SRAM: readout protection, write protection, proprietary code readout protection and Firewall.

The devices offer a fast 12-bit ADC (5 Msps), two comparators, one operational amplifier, two DAC channels, an internal voltage reference buffer, a low-power RTC, one general-purpose 32-bit timer, one 16-bit PWM timer dedicated to motor control, four general-purpose 16-bit timers, and two 16-bit low-power timers.

In addition, up to 21 capacitive sensing channels are available.

They also feature standard and advanced communication interfaces.

The STM32L431xx operates in the -40 to +85 °C (+105 °C junction), -40 to +105 °C (+125 °C junction) and -40 to +125 °C (+130 °C junction) temperature ranges from a 1.71 to 3.6 V power supply. A comprehensive set of power-saving modes allows the design of low-power applications.

Some independent power supplies are supported: analog independent supply input for ADC, DAC, OPAMP and comparators. A VBAT input allows to backup the RTC and backup registers.

The STM32L431xx family offers nine packages from 32 to 100-pin packages.

  • All features

    • Ultra-low-power with FlexPowerControl
      • 1.71 V to 3.6 V power supply
      • -40 °C to 85/105/125 °C temperature range
      • 200 nA in VBAT mode: supply for RTC and 32x32-bit backup registers
      • 8 nA Shutdown mode (5 wakeup pins)
      • 28 nA Standby mode (5 wakeup pins)
      • 280 nA Standby mode with RTC
      • 1.0 μA Stop 2 mode, 1.28 μA with RTC
      • 84 μA/MHz run mode
      • Batch acquisition mode (BAM)
      • 4 μs wakeup from Stop mode
      • Brown out reset (BOR)
      • Interconnect matrix
    • Core: Arm® 32-bit Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator™) allowing 0-wait-state execution from Flash memory, frequency up to 80 MHz, MPU, 100DMIPS and DSP instructions
    • Performance benchmark
      • 1.25 DMIPS/MHz (Drystone 2.1)
      • 273.55 CoreMark® (3.42 CoreMark/MHz @ 80 MHz)
    • Energy benchmark
      • 176.7 ULPBench® score
    • Clock Sources
      • 4 to 48 MHz crystal oscillator
      • 32 kHz crystal oscillator for RTC (LSE)
      • Internal 16 MHz factory-trimmed RC (±1%)
      • Internal low-power 32 kHz RC (±5%)
      • Internal multispeed 100 kHz to 48 MHz oscillator, auto-trimmed by LSE (better than ±0.25 % accuracy)
      • Internal 48 MHz with clock recovery
      • 2 PLLs for system clock, audio, ADC
    • Up to 83 fast I/Os, most 5 V-tolerant
    • RTC with HW calendar, alarms and calibration
    • Up to 21 capacitive sensing channels: support touchkey, linear and rotary touch sensors
    • 11x timers: 1x 16-bit advanced motor-control, 1x 32-bit and 2x 16-bit general purpose, 2x 16-bit basic, 2x low-power 16-bit timers (available in Stop mode), 2x watchdogs, SysTick timer
    • Memories
      • Up to 256 KB single bank Flash, proprietary code readout protection
      • 64 KB of SRAM including 16 KB with hardware parity check
      • Quad SPI memory interface
    • Rich analog peripherals (independent supply)
      • 1x 12-bit ADC 5 Msps, up to 16-bit with hardware oversampling, 200 μA/Msps
      • 2x 12-bit DAC output channels, low-power sample and hold
      • 1x operational amplifier with built-in PGA
      • 2x ultra-low-power comparators
    • 16x communication interfaces
      • 1x SAI (serial audio interface)
      • 3x I2C FM+(1 Mbit/s), SMBus/PMBus
      • 4x USARTs (ISO 7816, LIN, IrDA, modem)
      • 1x LPUART (Stop 2 wake-up)
      • 3x SPIs (and 1x Quad SPI)
      • CAN (2.0B Active) and SDMMC interface
      • SWPMI single wire protocol master I/F
      • IRTIM (Infrared interface)
    • 14-channel DMA controller
    • True random number generator
    • CRC calculation unit, 96-bit unique ID
    • Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
    • All packages are ECOPACK2® compliant

Circuit Diagram

EDA Symbols, Footprints and 3D Models

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3D models

Quality and Reliability

Part Number Marketing Status Package SMPS Grade RoHS Compliance Grade Material Declaration**
STM32L431VCI3
Active
UFBGA 100 7x7x0.6 P 0.5 mm - Industrial Ecopack2
STM32L431VCI3TR
Active
UFBGA 100 7x7x0.6 P 0.5 mm - Industrial Ecopack2
STM32L431VCI6
Active
UFBGA 100 7x7x0.6 P 0.5 mm - Industrial Ecopack2
STM32L431VCI7
Active
UFBGA 100 7x7x0.6 P 0.5 mm - Industrial Ecopack2
STM32L431VCI7TR
Active
UFBGA 100 7x7x0.6 P 0.5 mm - Industrial Ecopack2
STM32L431VCT6
Active
LQFP 100 14x14x1.4 mm - Industrial Ecopack2
STM32L431VCT6TR
Active
LQFP 100 14x14x1.4 mm - Industrial Ecopack2

STM32L431VCI3

Package:

UFBGA 100 7x7x0.6 P 0.5 mm

Material Declaration**:

Marketing Status

Active

Package

UFBGA 100 7x7x0.6 P 0.5 mm

SMPS

-

Grade

Industrial

STM32L431VCI3TR

Package:

UFBGA 100 7x7x0.6 P 0.5 mm

Material Declaration**:

Marketing Status

Active

Package

UFBGA 100 7x7x0.6 P 0.5 mm

SMPS

-

Grade

Industrial

STM32L431VCI6

Package:

UFBGA 100 7x7x0.6 P 0.5 mm

Material Declaration**:

Marketing Status

Active

Package

UFBGA 100 7x7x0.6 P 0.5 mm

SMPS

-

Grade

Industrial

STM32L431VCI7

Package:

UFBGA 100 7x7x0.6 P 0.5 mm

Material Declaration**:

Marketing Status

Active

Package

UFBGA 100 7x7x0.6 P 0.5 mm

SMPS

-

Grade

Industrial

STM32L431VCI7TR

Package:

UFBGA 100 7x7x0.6 P 0.5 mm

Material Declaration**:

Marketing Status

Active

Package

UFBGA 100 7x7x0.6 P 0.5 mm

SMPS

-

Grade

Industrial

STM32L431VCT6

Package:

LQFP 100 14x14x1.4 mm

Material Declaration**:

Marketing Status

Active

Package

LQFP 100 14x14x1.4 mm

SMPS

-

Grade

Industrial

STM32L431VCT6TR

Package:

LQFP 100 14x14x1.4 mm

Material Declaration**:

Marketing Status

Active

Package

LQFP 100 14x14x1.4 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
Order from distributors
Order from ST
Marketing Status
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
STM32L431VCI3 Available at distributors

Distributor availability of STM32L431VCI3

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 UFBGA 100 7x7x0.6 P 0.5 mm -40 125

PHILIPPINES

5

1

16

-

-

2

2

83

1

-

3

-

3

-

1

-

STM32L431VCI6 Available at distributors

Distributor availability of STM32L431VCI6

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 UFBGA 100 7x7x0.6 P 0.5 mm -40 85

PHILIPPINES

5

1

16

-

-

2

2

83

1

-

3

-

3

-

1

-

STM32L431VCI7 Available at distributors

Distributor availability of STM32L431VCI7

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 UFBGA 100 7x7x0.6 P 0.5 mm -40 105

TAIWAN

5

1

16

-

-

2

2

83

1

-

3

-

3

-

1

-

STM32L431VCT6TR Available at distributors

Distributor availability of STM32L431VCT6TR

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 Tape and Reel LQFP 100 14x14x1.4 mm -40 85

TAIWAN

5

1

16

-

-

2

2

83

1

-

3

-

3

-

1

-

STM32L431VCI7TR Available at distributors

Distributor availability of STM32L431VCI7TR

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 Tape and Reel UFBGA 100 7x7x0.6 P 0.5 mm -40 105

TAIWAN

5

1

16

-

-

2

2

83

1

-

3

-

3

-

1

-

STM32L431VCT6 Available at distributors

Distributor availability of STM32L431VCT6

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 100 14x14x1.4 mm -40 85

TAIWAN

5

1

16

-

-

2

2

83

1

-

3

-

3

-

1

-

STM32L431VCI3TR Available at distributors

Distributor availability of STM32L431VCI3TR

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 Tape and Reel UFBGA 100 7x7x0.6 P 0.5 mm -40 125

PHILIPPINES

5

1

16

-

-

2

2

83

1

-

3

-

3

-

1

-

STM32L431VCI3 Active

Package:
UFBGA 100 7x7x0.6 P 0.5 mm
ECCN (US):
3A991.a.2
Budgetary Price (US$)*/Qty:
-

Part Number:

STM32L431VCI3

ECCN (EU):

NEC

Packing Type:

Tray

Operating Temperature (°C)

Min:

-40

Max:

125

Country of Origin:

PHILIPPINES

Timers (typ) (16-bit):

5

Timers (typ) (32-bit):

1

Number of Channels (typ):

16

Number of Channels (typ):

-

Number of Channels (typ):

-

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

2

Comparator:

2

I/Os (High Current):

83

CAN:

1

CAN FD (typ):

-

SPI (typ):

3

I2S (typ):

-

USART (typ):

3

UART (typ):

-

Integrated op-amps:

1

SMPS:

-

STM32L431VCI6 Active

Package:
UFBGA 100 7x7x0.6 P 0.5 mm
ECCN (US):
3A991.a.2
Budgetary Price (US$)*/Qty:
-

Part Number:

STM32L431VCI6

ECCN (EU):

NEC

Packing Type:

Tray

Operating Temperature (°C)

Min:

-40

Max:

85

Country of Origin:

PHILIPPINES

Timers (typ) (16-bit):

5

Timers (typ) (32-bit):

1

Number of Channels (typ):

16

Number of Channels (typ):

-

Number of Channels (typ):

-

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

2

Comparator:

2

I/Os (High Current):

83

CAN:

1

CAN FD (typ):

-

SPI (typ):

3

I2S (typ):

-

USART (typ):

3

UART (typ):

-

Integrated op-amps:

1

SMPS:

-

STM32L431VCI7 Active

Package:
UFBGA 100 7x7x0.6 P 0.5 mm
ECCN (US):
3A991.a.2
Budgetary Price (US$)*/Qty:
-

Part Number:

STM32L431VCI7

ECCN (EU):

NEC

Packing Type:

Tray

Operating Temperature (°C)

Min:

-40

Max:

105

Country of Origin:

TAIWAN

Timers (typ) (16-bit):

5

Timers (typ) (32-bit):

1

Number of Channels (typ):

16

Number of Channels (typ):

-

Number of Channels (typ):

-

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

2

Comparator:

2

I/Os (High Current):

83

CAN:

1

CAN FD (typ):

-

SPI (typ):

3

I2S (typ):

-

USART (typ):

3

UART (typ):

-

Integrated op-amps:

1

SMPS:

-

STM32L431VCT6TR Active

Package:
LQFP 100 14x14x1.4 mm
ECCN (US):
3A991.a.2
Budgetary Price (US$)*/Qty:
-

Part Number:

STM32L431VCT6TR

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

85

Country of Origin:

TAIWAN

Timers (typ) (16-bit):

5

Timers (typ) (32-bit):

1

Number of Channels (typ):

16

Number of Channels (typ):

-

Number of Channels (typ):

-

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

2

Comparator:

2

I/Os (High Current):

83

CAN:

1

CAN FD (typ):

-

SPI (typ):

3

I2S (typ):

-

USART (typ):

3

UART (typ):

-

Integrated op-amps:

1

SMPS:

-

STM32L431VCI7TR Active

Package:
UFBGA 100 7x7x0.6 P 0.5 mm
ECCN (US):
3A991.a.2
Budgetary Price (US$)*/Qty:
-

Part Number:

STM32L431VCI7TR

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

105

Country of Origin:

TAIWAN

Timers (typ) (16-bit):

5

Timers (typ) (32-bit):

1

Number of Channels (typ):

16

Number of Channels (typ):

-

Number of Channels (typ):

-

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

2

Comparator:

2

I/Os (High Current):

83

CAN:

1

CAN FD (typ):

-

SPI (typ):

3

I2S (typ):

-

USART (typ):

3

UART (typ):

-

Integrated op-amps:

1

SMPS:

-

STM32L431VCT6 Active

Package:
LQFP 100 14x14x1.4 mm
ECCN (US):
3A991.a.2
Budgetary Price (US$)*/Qty:
-

Part Number:

STM32L431VCT6

ECCN (EU):

NEC

Packing Type:

Tray

Operating Temperature (°C)

Min:

-40

Max:

85

Country of Origin:

TAIWAN

Timers (typ) (16-bit):

5

Timers (typ) (32-bit):

1

Number of Channels (typ):

16

Number of Channels (typ):

-

Number of Channels (typ):

-

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

2

Comparator:

2

I/Os (High Current):

83

CAN:

1

CAN FD (typ):

-

SPI (typ):

3

I2S (typ):

-

USART (typ):

3

UART (typ):

-

Integrated op-amps:

1

SMPS:

-

Distributor Name

Distributor reported inventory date:

STM32L431VCI3TR Active

Package:
UFBGA 100 7x7x0.6 P 0.5 mm
ECCN (US):
3A991.a.2
Budgetary Price (US$)*/Qty:
-

Part Number:

STM32L431VCI3TR

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Country of Origin:

PHILIPPINES

Timers (typ) (16-bit):

5

Timers (typ) (32-bit):

1

Number of Channels (typ):

16

Number of Channels (typ):

-

Number of Channels (typ):

-

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

2

Comparator:

2

I/Os (High Current):

83

CAN:

1

CAN FD (typ):

-

SPI (typ):

3

I2S (typ):

-

USART (typ):

3

UART (typ):

-

Integrated op-amps:

1

SMPS:

-

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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