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EFM8BB31F32I-C-QFN32 – Silicon Labs

Disclaimer: The image displayed serves as a mere illustration and does not provide precise specifications. For accurate details, We recommend referring to the official product data sheet.


In stock

Manufacturer Silicon Labs
Manufacturer Part No.EFM8BB31F32I-C-QFN32 – Silicon Labs
DescriptionIC MCU 8BIT 32KB FLASH 32QFN
Detailed DescriptionCIP-51 8051 Busy Bee Microcontroller IC 8-Bit 50MHz 32KB (32K x 8) FLASH 32-QFN (4x4)
DatasheetDatasheet Link

Key Stats

71% Customers retention rate

Customers from 12 countries

6 Industries

Product Attributes

TypeIntegrated Circuits (IC)
CategoryEmbedded Microcontrollers
ManufacturerSilicon Labs
SeriesBusy Bee
Product StatusNot For New Designs
Matkronics ProgrammableNot Verified
Core ProcessorCIP-51 8051
Core Size8-Bit
ConnectivityI2C, SMBus, SPI, UART/USART
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
Number of I/O29
Program Memory Size32KB (32K x 8)
Program Memory TypeFlash
RAM Size2.25K x 8
Voltage – Supply (Vcc/Vdd)2.2V ~ 3.6V
Data ConvertersA/D 20×10/12b SAR; D/A 2x12b
Oscillator TypeInternal
Operating Temperature-40°C ~ 125°C (TA)
Mounting TypeSurface Mount
Package/Case32-UFQFN Exposed Pad
Supplier Device Package32-QFN (4×4)
Base Product NumberEFM8BB31

Product Information

Silicon Labs EFM8BB31F32I-C-QFN32 Semiconductor

The Silicon Labs EFM8BB31F32I-C-QFN32 is a high-performance 8-bit microcontroller designed for a wide range of applications. This semiconductor product stands out in the market due to its unique features and key benefits.

Key Features:

  • 32-bit ARM Cortex-M0+ core
  • 32 KB Flash memory
  • 2 KB RAM
  • 32-pin QFN package
  • Low power consumption
  • Integrated peripherals including UART, SPI, I2C, and ADC


  • High performance for demanding applications
  • Low power consumption for extended battery life
  • Compact package size for space-constrained designs
  • Integrated peripherals for simplified system design


The EFM8BB31F32I-C-QFN32 semiconductor is ideal for a variety of applications including IoT devices, smart home appliances, industrial automation, and consumer electronics.

Performance Advantages:

With its 32-bit ARM Cortex-M0+ core and integrated peripherals, this semiconductor product offers superior performance and efficiency compared to other 8-bit microcontrollers on the market. Its low power consumption and compact package size make it a top choice for designers looking to optimize their designs for size and power efficiency.

Whether you are a technical expert looking for a high-performance microcontroller or a non-technical user interested in smart home devices, the Silicon Labs EFM8BB31F32I-C-QFN32 semiconductor offers the features and benefits you need for your next project.

Additional Info

Type Integrated Circuits (IC) Category Embedded Microcontrollers Manufacturer Silicon Labs Series Busy Bee Package Tube Product Status Not For New Designs Matkronics Programmable Not Verified Core Processor CIP-51 8051 Core Size 8-Bit Speed 50MHz Connectivity I2C, SMBus, SPI, UART/USART Peripherals Brown-out Detect/Reset, POR, PWM, WDT Number of I/O 29 Program Memory Size 32KB (32K x […]

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