STMicroelectronics STM32L431KBU3TR
STMicroelectronics STM32L431KBU3TR

STMicroelectronics STM32L431KBU3TR

Manufacturer No:

STM32L431KBU3TR

Manufacturer:

STMicroelectronics

Package:

Description:

IC MCU 32BIT 128KB FLSH 32UFQFPN.ARM® Cortex®-M4 STM32L4 Microcontroller IC 32-Bit 80MHz 128KB (128K x 8) FLASH 32-UFQFPN (5x5)

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STM32L431KBU3TR Information

STMicroelectronics STM32L431KBU3TR technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics STM32L431KBU3TR.

  • Type
  • Parameter
  • Series
  • STM32L4
  • Packaging
  • Tape & Reel (TR)
  • Part Status
  • Active
  • Manufacturer Lead Time
  • 12 Weeks
  • Connectivity
  • CANbus, I2C, IrDA, LINbus, QSPI, SAI, SPI, SWPMI, UART/USART
  • Core Processor
  • ARM® Cortex®-M4
  • Core Size
  • 32-Bit
  • Data Converters
  • A/D 10x12b SAR; D/A 2x12b
  • Mounting Type
  • Surface Mount
  • Number of I/O
  • 26
  • Type
  • Parameter
  • Operating Temperature
  • -40°C ~ 125°C (TA)
  • Oscillator Type
  • External, Internal
  • Package / Case
  • 32-UFQFN Exposed Pad
  • Peripherals
  • Brown-out Detect/Reset, DMA, PWM, WDT
  • Program Memory Size
  • 128KB (128K x 8)
  • Program Memory Type
  • FLASH
  • RAM Size
  • 64K x 8
  • Speed
  • 80MHz
  • Supplier Device Package
  • 32-UFQFPN (5x5)
  • Voltage - Supply (Vcc/Vdd)
  • 1.71V ~ 3.6V

Download datasheets and manufacturer documentation for STMicroelectronics STM32L431KBU3TR.

Data sheet:

Material Declaration:

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)
    • 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

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