STM32L431KBU3 - ST Microelectronics

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

STM32L431KBU3
Manufacturer

ST Microelectronics
ChipWorker Part#

CW68215363
Package

QFN-32
Description

MCU 32Bit Ultra Low Power STM32L ARM Cortex-M4 RISC 128KB Flash 32Pin QFN ECOPACK2 Tray
Documentation

Datasheet

STM32L431KBU3 Global Supplier

{{ supplierTable.supplier }}	{{ supplierTable.part }}	{{ supplierTable.availability }}	MOQ	{{ supplierTable.delivery_date }}

{{viewMore}}
{{viewMore}}
DigiKey	{{noList.partNo}} {{noList.mfr}}	0 {{ search_item }}	-	{{outStock}}
Arrow	{{noList.partNo}} {{noList.mfr}}	0 {{ search_item }}	-	{{outStock}}
Mouser	{{noList.partNo}} {{noList.mfr}}	0 {{ search_item }}	-	{{outStock}}
					{{submitRFQ}}

STM32L431KBU3 Specifications

Attribute	Attribute Value

Part Number	STM32L431KBU3
Manufacturer	ST Microelectronics
ChipWorker Part#	CW68215363
Documentation	Datasheet
Number of Pins	32 Pin
Case/Package	QFN-32
Number of Positions	32 Position
RAM Memory Size	64 KB
Number of Bits	32 Bit
Power Dissipation	523 mW
Number of ADCs	1 ADC
Number of Inputs and Outputs	26 Input IO
Operating Temperature (Max)	125 ℃
Operating Temperature (Min)	-40 ℃
Power Dissipation (Max)	523 mW
Number of DACs	1 DAC
Supply Voltage (Max)	3.6 V
Supply Voltage (Min)	1.71 V
	expand all
Operating Temperature	-40℃ ~ 125℃
Product Lifecycle Status	Unknown
Packaging	Tray
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
ECCN Code	3A991A2

Product 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.
**Key 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)
1× 12-bit ADC 5 Msps, up to 16-bit with hardware oversampling, 200 μA/Msps
2x 12-bit DAC, 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 (4x SPIs with the 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™

expand all

Delivery

DHLPrice

UPS

FedEx

TNT

EMS

OCS

SF EXPRESS

Chipworker Certification

Ordering Information

Order Payment Shipping Package Quality Assurance

These terms and conditions are for reference only. The actual terms and conditions are subject to the sales staff's quotation.
- Please check the technical specifications of the products when ordering.
- MOQ is the minimum order quantity required to purchase each part.
- If you have special ordering instructions, please indicate them on the order page.
- Pre-Shipment Inspection (PSI) will be used when ordering.
- You can check the status of your order in the “My Order” section of your personal account.
- Orders cannot be canceled after the package has been shipped. View more >
- Works with both individual and corporate clients. View more >
- All prices on the website include 20% VAT.
- Invoices are issued in the currency specified, but payment is made in Russian rubles at the exchange rate on the day of payment.
- If you need a detailed invoice or a tax identifier, please contact us.
- Delivery will take between 1 to 2 weeks after the shipment is sent to your country.
- Your order will be processed only after the invoice has been paid.
- The tracking number will be sent to you after the order is shipped. (It may take up to 24 hours for the information to be available from the carrier.) View more >
- Carefully tested and packaged by ChipWorker
- Vacuum packed
- Anti-static packaging
- Anti-vibration foam
- Income quality control (IQC), 800+ qualified distributors.
- Authorities test the chip to ensure the quality, authenticity and safety of your device.
- Decapsulation control
- X-ray inspection
- XRF inspection
- Electrical testing
- Surface testing

Contact Us

Buy STM32L431KBU3

Stock is limited and changes quickly. Our 24/7 online sales team is ready to respond to your inquiries and orders at any time.