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STM32L431RBI3 The STM32L431RBI3 is a 32-bit microcontroller from STMicroelectronics featuring an ARM Cortex-M4 core. It offers 128KB of FLASH program memory and 64KB of RAM.
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STM32L431RBI3

Available from 1 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The STM32L431RBI3 is a 32-bit microcontroller from STMicroelectronics featuring an ARM Cortex-M4 core. It offers 128KB of FLASH program memory and 64KB of RAM.
✓ Total Stock: 1,845 pcs
$ Price Range: $6.40

STM32L431RBI3 Available from 1 distributor

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✓ Non-Authorised
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Seba Components ✓
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1,845 pcs
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STM32L431RBI3 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Connectivity
Core Processor
Core Size
Data Converters
Mounting Type
Number of I
Operating Temperature
Oscillator Type
Peripherals
Program Memory Size
Program Memory Type
RAM Size
Speed
Supplier Device Package
Voltage
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STM32L431RBI3 Description

Short technical summary and product information.

This STMicroelectronics STM32L431RBI3 is a high-performance 32-bit microcontroller based on the ARM Cortex-M4 core, operating at speeds up to 80MHz. It provides 128KB of FLASH program memory and 64KB of RAM, suitable for embedded applications requiring significant processing power and data storage.

 

The microcontroller supports a wide operating voltage range of 1.71V to 3.6V and features integrated peripherals such as CANbus, I²C, SPI, and UART/USART, along with data converters including 16-channel 12-bit ADCs and 2-channel 12-bit DACs. It is designed for surface mounting and comes in a compact 64-UFBGA (5x5) package.

 

Key features include internal oscillator, DMA, PWM, and WDT peripherals, making it versatile for various control and processing tasks. The operating temperature range is -40°C to 85°C (TA).

STM32L431RBI3 Quick Information

Product Type: Microcontroller
Canonical Name: STM32L431RBI3 Microcontroller
Subcategory: Embedded

STM32L431RBI3 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

STM32L431RBI3 Estimated Pricing

Qty Low High
1+ $6.40 $6.40

Estimated market price range - modelled values for guidance only, not live distributor offers.

STM32L431RBI3 Features

  • ARM Cortex-M4 32-bit core processor.
  • 128KB FLASH program memory.
  • 64KB RAM data memory.
  • 80MHz maximum operating speed.
  • 64-UFBGA surface mount package.

STM32L431RBI3 Applications

  • Suitable for embedded control systems.
  • Ideal for data acquisition applications.
  • Used in signal processing tasks.
  • Applicable for IoT devices.

STM32L431RBI3 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating temperature range for the STM32L431RBI3?

-40°C to 85°C (TA)

What package type is the STM32L431RBI3 microcontroller supplied in?

64-UFBGA (5x5)

What is the operating voltage range for this microcontroller?

1.71V to 3.6V

What is the program memory size of the STM32L431RBI3?

128KB (128K x 8)

What is the RAM size for the STM32L431RBI3?

64K x 8

What is the core processor of the STM32L431RBI3?

ARM Cortex-M4

What connectivity interfaces are supported by the STM32L431RBI3?

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

STM32L431RBI3 Alternate Parts

Same form/fit/function or matching attribute configuration across different manufacturers.
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