EFM8BB21F16A-QFN20 8051 8-bit Microcontroller

Temperature Range Max (°C)



The EFM8BB21F16A-QFN20 is part of the Busy Bee family of 8051 based 8-bit MCUs. Built on top of a low power platform this device operates at 50 MHz. The EFM8BB21F16A-QFN20 includes 16 kB Flash, 2.25 kB RAM, 16 Dig I/O Pins, 5 x 16-bit Timers, 3 PCA Channels, -40 to 125 ºC temperature range, Automotive grade, full AEC-Q100 qualification, 3x3 QFN20 package, and additional communication peripherals.

To order or sample these Automotive AEC-Q100 qualified devices, please contact your local Silicon Labs representative.

Similar Devices: EFM8BB21F16A-QFN20 EFM8BB21F16G-QFN20 EFM8BB21F16I-QFN20

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Specifications Summary

MCU Core: 8051

MHz: 50

Flash (kB): 16

RAM (kB): 2.25

HS I²C Slave: 1

I²C: 1

SPI: 1


Dig I/O Pins: 16

ADC: 12-bit, 15-ch.


Comparators: 2

PCA Channels: 3

Timers: 5

Package Type: QFN20

Package Size: 3x3

Development Tools Type
SLSTK2021A EFM8 Busy Bee Starter Kit Starter Kits

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