STM32L431RBT6
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STMicroelectronics STM32L431RBT6

Manufacturer No:
STM32L431RBT6
Manufacturer:
STMicroelectronics
Package:
Tray
Description:
IC MCU 32BIT 128KB FLASH 64LQFP
Delivery:
Payment:
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Product Introduction

Overview

The STM32L431RBT6 is an ultra-low-power microcontroller from STMicroelectronics, based on the high-performance Arm® Cortex®-M4 32-bit RISC core. This microcontroller operates at a frequency of up to 80 MHz and features a Floating Point Unit (FPU) that supports all Arm® single-precision data-processing instructions and data types. It also includes a full set of DSP instructions and a Memory Protection Unit (MPU) to enhance application security.

The device is equipped with high-speed memories, including up to 256 Kbytes of Flash memory and 64 Kbytes of SRAM. It also features a Quad SPI flash memory interface and an extensive range of enhanced I/Os and peripherals connected to multiple buses. The STM32L431RBT6 is designed for low-power applications, offering various power-saving modes and independent power supplies for analog components.

Key Specifications

Parameter Specification
Core Arm® 32-bit Cortex®-M4 CPU with FPU, up to 80 MHz
Memory Up to 256 KB Flash, 64 KB SRAM
Power Supply 1.71 V to 3.6 V
Temperature Range -40 °C to +85 °C / +105 °C / +125 °C
ADC 1x 12-bit ADC, 5 Msps
DAC 2x 12-bit DAC output channels
Timers 1x 32-bit, 5x 16-bit timers
Communication Interfaces 3x SPI, 4x USART, 1x LPUART, 3x I2C, CAN 2.0B
Package LQFP 64 (10x10x1.4 mm)
I/Os Up to 83 fast I/Os, most 5 V-tolerant
Capacitive Sensing Channels Up to 21 channels

Key Features

  • Ultra-low-power with FlexPowerControl
  • 1.71 V to 3.6 V power supply
  • -40 °C to +85 °C / +105 °C / +125 °C temperature range
  • Low-power modes: 200 nA in VBAT mode, 8 nA Shutdown mode, 28 nA Standby mode, 280 nA Standby mode with RTC
  • Fast 12-bit ADC (5 Msps), two comparators, one operational amplifier
  • Up to 21 capacitive sensing channels
  • Rich communication interfaces including SPI, USART, I2C, and CAN 2.0B
  • Internal voltage reference buffer, low-power RTC, and multiple timers
  • True random number generator, CRC calculation unit, and 96-bit unique ID
  • Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™

Applications

The STM32L431RBT6 is suitable for a wide range of low-power applications, including:

  • IoT devices and smart home appliances
  • Industrial automation and control systems
  • Medical devices and healthcare equipment
  • Automotive systems and telematics
  • Consumer electronics and wearables

Q & A

  1. What is the core architecture of the STM32L431RBT6?

    The STM32L431RBT6 is based on the Arm® Cortex®-M4 32-bit RISC core with a Floating Point Unit (FPU).

  2. What is the maximum operating frequency of the STM32L431RBT6?

    The maximum operating frequency is up to 80 MHz.

  3. What are the power supply requirements for the STM32L431RBT6?

    The device operates from a 1.71 V to 3.6 V power supply.

  4. What are the low-power modes available on the STM32L431RBT6?

    The device features several low-power modes including VBAT mode, Shutdown mode, Standby mode, and Stop 2 mode.

  5. What analog peripherals are available on the STM32L431RBT6?

    The device includes a 12-bit ADC, two 12-bit DAC channels, an operational amplifier, and two ultra-low-power comparators.

  6. What communication interfaces does the STM32L431RBT6 support?

    The device supports multiple communication interfaces such as SPI, USART, I2C, and CAN 2.0B.

  7. What is the package type of the STM32L431RBT6?

    The device is available in an LQFP 64 (10x10x1.4 mm) package.

  8. Does the STM32L431RBT6 support capacitive sensing?

    Yes, it supports up to 21 capacitive sensing channels.

  9. What development tools are available for the STM32L431RBT6?

    The device supports serial wire debug (SWD), JTAG, and Embedded Trace Macrocell™ for development.

  10. Is the STM32L431RBT6 RoHS compliant?

    Yes, the STM32L431RBT6 is RoHS compliant and ECOPACK2 certified.

Product Attributes

Core Processor:ARM® Cortex®-M4
Core Size:32-Bit Single-Core
Speed:80MHz
Connectivity:CANbus, I²C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART
Peripherals:Brown-out Detect/Reset, DMA, PWM, WDT
Number of I/O:52
Program Memory Size:128KB (128K x 8)
Program Memory Type:Flash
EEPROM Size:- 
RAM Size:64K x 8
Voltage - Supply (Vcc/Vdd):1.71V ~ 3.6V
Data Converters:A/D 16x12b; D/A 2x12b
Oscillator Type:Internal
Operating Temperature:-40°C ~ 85°C (TA)
Mounting Type:Surface Mount
Package / Case:64-LQFP
Supplier Device Package:64-LQFP (10x10)
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Similar Products

Part Number STM32L431RBT6 STM32L433RBT6 STM32L431RCT6 STM32L431CBT6 STM32L431RBI6
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics
Product Status Active Active Active Active Active
Core Processor ARM® Cortex®-M4 ARM® Cortex®-M4 ARM® Cortex®-M4 ARM® Cortex®-M4 ARM® Cortex®-M4
Core Size 32-Bit Single-Core 32-Bit Single-Core 32-Bit Single-Core 32-Bit Single-Core 32-Bit Single-Core
Speed 80MHz 80MHz 80MHz 80MHz 80MHz
Connectivity CANbus, I²C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART CANbus, I²C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART, USB CANbus, I²C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART CANbus, I²C, IrDA, LINbus, QSPI, SAI, SPI, SWPMI, UART/USART CANbus, I²C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART
Peripherals Brown-out Detect/Reset, DMA, PWM, WDT Brown-out Detect/Reset, DMA, LCD, PWM, WDT Brown-out Detect/Reset, DMA, PWM, WDT Brown-out Detect/Reset, DMA, PWM, WDT Brown-out Detect/Reset, DMA, PWM, WDT
Number of I/O 52 52 52 39 52
Program Memory Size 128KB (128K x 8) 128KB (128K x 8) 256KB (256K x 8) 128KB (128K x 8) 128KB (128K x 8)
Program Memory Type Flash Flash Flash Flash Flash
EEPROM Size - - - - -
RAM Size 64K x 8 64K x 8 64K x 8 64K x 8 64K x 8
Voltage - Supply (Vcc/Vdd) 1.71V ~ 3.6V 1.71V ~ 3.6V 1.71V ~ 3.6V 1.71V ~ 3.6V 1.71V ~ 3.6V
Data Converters A/D 16x12b; D/A 2x12b A/D 16x12b; D/A 2x12b A/D 16x12b; D/A 2x12b A/D 10x12b; D/A 2x12b A/D 16x12b; D/A 2x12b
Oscillator Type Internal Internal Internal Internal Internal
Operating Temperature -40°C ~ 85°C (TA) -40°C ~ 85°C (TA) -40°C ~ 85°C (TA) -40°C ~ 85°C (TA) -40°C ~ 85°C (TA)
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 64-LQFP 64-LQFP 64-LQFP 48-LQFP 64-UFBGA
Supplier Device Package 64-LQFP (10x10) 64-LQFP (10x10) 64-LQFP (10x10) 48-LQFP (7x7) 64-UFBGA (5x5)

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