EFM8BB31F64A-D-5QFN32

Microcontrollers Overview

The Silicon Labs EFM8BB31F64A-D-5QFN32 is an 8-bit microcontroller from the Busy Bee series, featuring a CIP-51 core operating at up to 50 MHz. It integrates 64 KB of flash memory and 4.25 KB of RAM within a 32-QFN (5x5) package. The device supports a supply voltage range of 2.2 V to 3.6 V and includes 20-channel 10/12-bit SAR ADCs and 4-channel 12-bit DACs. It offers I2C, SMBus, SPI, and UART interfaces, with an operating temperature range of -40°C to 125°C.

Microcontrollers Feature Summary

• Integrated high-resolution analog conversion capabilities with multiple SAR ADC channels and precision DAC outputs for sensor interfacing and signal generation.
• Automotive-grade qualification ensuring reliability in demanding environments through AEC-Q100 certification.
• Compact surface-mount packaging designed for space-constrained applications while maintaining robust digital connectivity options.

Microcontrollers Applications

• Automotive electronic systems requiring qualified components
• Industrial control units with analog sensing requirements
• Consumer devices needing low-power 8-bit processing

Microcontrollers Procurement Notes

Verify the specific suffix codes against official Silicon Labs documentation to confirm package dimensions and temperature ratings. Ensure compatibility with existing design files before procurement. Check current product status as availability may vary by region. Confirm RoHS compliance details if required for specific regulatory standards.

Microcontrollers Selection Notes

Select this component when automotive qualification is mandatory alongside standard Busy Bee features. Compare RAM sizes across the EFM8BB31 family to match application memory needs. Verify that the 5x5 QFN footprint fits the PCB layout constraints. Ensure the 2.2V to 3.6V supply range aligns with the system power architecture.

Microcontrollers Part Context

This part belongs to the EFM8BB31 sub-series of the Busy Bee family, distinguished by its automotive qualification. It shares the CIP-51 core with other Busy Bee variants but offers higher flash capacity compared to lower-end models like the F16 or F32 versions. The 'A' suffix typically denotes automotive grade, differentiating it from commercial counterparts.

Microcontrollers Replacement Considerations

Direct substitutes include other EFM8BB31 variants with matching flash sizes, such as EFM8BB31F64I-B-5QFN32, provided automotive qualification is not strictly required. Commercial grade equivalents may be used if environmental ratings can be relaxed.