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Home > Embedded ICs > 32bit MCU > STM32L431VCT6

ST STM32L431VCT6

  • STM32L431VCT6

  • STMicroelectronics

  • 100-LQFP


  • 32bit MCU


  • IC MCU 32BIT 256KB FLASH 100LQFP

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STM32L431VCT6 Overview

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.

Features

  • 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
  • Applications

    STM32L4

    Product Parameter

    • Core Processor ARM Cortex M4

    • Speed 80MHz

    • Operating Temperature -40℃ ~ 85℃ (TA)

    • Program Memory Type FLASH

    • RAM Size 64K x 8

    • Number of I/O 83

    • Peripherals Brown-out Detect/Reset, DMA, PWM, WDT

    • Mounting Type Surface Mount

    • Oscillator Type Internal

    • Supplier Device Package 100-LQFP (14x14)

    • Package / Case 100-LQFP

    • Core Size 32-Bit

    • Connectivity CANbus, I2C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART

    • Program Memory Size 256KB (256K x 8)

    • Data Converters A/D 16x12b; D/A 2x12b

    • Voltage - Supply (Vcc/Vdd) 1.71V ~ 3.6V

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