EFM8BB31F32I-D-4QFN24

Microcontrollers Overview

The EFM8BB31F32I-D-4QFN24 is an 8-bit microcontroller from Silicon Labs' Busy Bee family, utilizing the CIP-51 core. It features 32 kB of Flash program memory and 2.25 kB of RAM. The device operates at a maximum clock frequency of 50 MHz with a supply voltage range of 2.2 V to 3.6 V. It includes a 12-channel 12-bit ADC, two 12-bit DACs, and multiple communication interfaces including I2C, SPI, and UART. The component is housed in a 24-QFN package and supports industrial temperatures from -40°C to +125°C.

Microcontrollers Feature Summary

• Integrates high-resolution analog peripherals including a 12-bit ADC and dual 12-bit DACs for precision signal processing.
• Supports flexible digital connectivity through standard serial interfaces such as I2C, SPI, and UART.
• Provides robust system management capabilities with integrated power-on reset, brown-out detection, and watchdog timer.

Microcontrollers Applications

• Battery-powered sensor nodes requiring low voltage operation
• Industrial control systems operating in extended temperature ranges
• Consumer electronics utilizing compact QFN packaging

Microcontrollers Procurement Notes

Verify the specific suffix 'D' indicates the industrial temperature grade (-40°C to +125°C) and '4QFN24' denotes the package type. Confirm RoHS compliance status via the manufacturer's current documentation. Ensure design-in compatibility with existing PCB footprints for the 24-pin QFN form factor before finalizing procurement orders.

Microcontrollers Selection Notes

Select this model when 32 kB of code space is required alongside precise analog conversion capabilities. The CIP-51 architecture offers enhanced performance over standard 8051 cores. Consider the 2.2 V minimum supply voltage for battery applications. Verify that the 20 available I/O pins meet the interface requirements for the target application design.

Microcontrollers Part Context

This part belongs to the EFM8BB3 series within the Busy Bee MCU family. It shares architectural similarities with other variants like the EFM8BB31F16 but offers increased memory capacity. The series is designed for cost-sensitive applications needing high integration in small packages.

Microcontrollers Replacement Considerations

Check for direct pin-compatible upgrades within the EFM8BB3 series, such as the EFM8BB31F32A variant, ensuring temperature grades and package styles match the original design specifications.