8-bit Microcontrollers - MCU

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EFM8 8-Bit Microcontrollers (MCUs)

Silicon Labs EFM8 Family offers a wide range of performances. They feature fast processors that allow for complex algorithm implementation and ultra-low power architectures with flexible sleep modes. All EFM8 devices have highly efficient peripherals, low-power consumption, BOM integration, and exquisite analog. The highly flexible digital and analog multiplexing strategy means that you can route nearly every I/O pin "wisely" to simplify PCB routing. Designers can choose peripherals and pinout placement without worrying about pre-set limitations and pin conflicts. The Silicon Labs EFM8 MCUs come with a comprehensive IDE, including sample code and energy-aware monitoring tools. Simplicity Studio platform is your one-stop solution for accessing demos, software examples, datasheets, technical support, and forums.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (DKK) Filter the results in the table by unit price based on your quantity.	Qty.	Core	Program Memory Size	Data RAM Size	Package/Case	Maximum Clock Frequency	ADC Resolution	Number of I/Os	Supply Voltage - Min	Supply Voltage - Max	Mounting Style	Data Bus Width	Minimum Operating Temperature	Maximum Operating Temperature	Series	Packaging
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB22F16I-C-QFN28 Silicon Labs 1: 14,47 kr. 1In Stock	Mfr. Part No. EFM8BB22F16I-C-QFN28 Mouser Part No 634-8BB22F16ICQFN28	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	1In Stock	14,47 kr. 10,67 kr. 9,70 kr. 8,65 kr. View 8,13 kr. 7,91 kr. 7,61 kr. 7,45 kr. 7,25 kr.	Min.: 1 Mult.: 1	CIP-51 8051	16 kB	2.3 kB	QFN-28	50 MHz	12 bit	22 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 125 C	EFM8BB2	Tube
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB52F16G-C-TSSOP20 Silicon Labs 1: 7,31 kr. 179Expected 13/11/2026	Mfr. Part No. EFM8BB52F16G-C-TSSOP20 Mouser Part No 634-EFM852F16GCTOP20	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	179Expected 13/11/2026	7,31 kr. 5,48 kr. 4,89 kr. 4,39 kr. View 4,38 kr. 4,17 kr. 4,11 kr. 3,99 kr. 3,89 kr.	Min.: 1 Mult.: 1		16 kB	1.28 kB	TSSOP-20			16 I/O	1.8 V	5.5 V	SMD/SMT		- 40 C	+ 85 C		Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F16I-C-TSSOP20R Silicon Labs 2.500: 3,72 kr. Non-Stocked Lead-Time 24 Weeks	Mfr. Part No. EFM8BB51F16I-C-TSSOP20R Mouser Part No 634-EFM851F16TSOP20R	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	Non-Stocked Lead-Time 24 Weeks	Reel 3,72 kr. 3,63 kr.	Min.: 2.500 Mult.: 2.500 : 2.500		16 kB	1.28 kB	TSSOP-20			16 I/O	1.8 V	5.5 V	SMD/SMT		- 40 C	+ 85 C		Reel
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F8G-C-QFN20R Silicon Labs 1: 6,35 kr. Non-Stocked Lead-Time 24 Weeks	Mfr. Part No. EFM8BB51F8G-C-QFN20R Mouser Part No 634-EFM851F8GCQFN20R	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	Non-Stocked Lead-Time 24 Weeks	Cut Tape 6,35 kr. 4,57 kr. 4,12 kr. 3,62 kr. Reel 3,00 kr. View 3,39 kr. 3,24 kr. 3,14 kr. 2,92 kr.	Min.: 1 Mult.: 1 : 2.500		16 kB	1.28 kB	QFN-20			16 I/O	1.8 V	5.5 V	SMD/SMT		- 40 C	+ 85 C		Reel, Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F8G-C-TSSOP20R Silicon Labs 2.500: 3,37 kr. Non-Stocked Lead-Time 24 Weeks	Mfr. Part No. EFM8BB51F8G-C-TSSOP20R Mouser Part No 634-EFM851F8GCTOP20R	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	Non-Stocked Lead-Time 24 Weeks	Reel 3,37 kr. 3,29 kr.	Min.: 2.500 Mult.: 2.500 : 2.500		16 kB	1.28 kB	TSSOP-20			16 I/O	1.8 V	5.5 V	SMD/SMT		- 40 C	+ 85 C		Reel
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F8I-C-QFN20R Silicon Labs 1: 6,93 kr. Non-Stocked Lead-Time 24 Weeks	Mfr. Part No. EFM8BB51F8I-C-QFN20R Mouser Part No 634-EFM851F8ICQFN20R	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	Non-Stocked Lead-Time 24 Weeks	Cut Tape 6,93 kr. 5,01 kr. 4,51 kr. 3,96 kr. Reel 3,27 kr. View 3,70 kr. 3,55 kr. 3,43 kr. 3,20 kr.	Min.: 1 Mult.: 1 : 2.500		16 kB	1.28 kB	QFN-20			16 I/O	1.8 V	5.5 V	SMD/SMT		- 40 C	+ 85 C		Reel, Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F8I-C-TSSOP20R Silicon Labs 2.500: 3,47 kr. Non-Stocked Lead-Time 24 Weeks	Mfr. Part No. EFM8BB51F8I-C-TSSOP20R Mouser Part No 634-EFM851F8ICTOP20R	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	Non-Stocked Lead-Time 24 Weeks	Reel 3,47 kr. 3,38 kr.	Min.: 2.500 Mult.: 2.500 : 2.500		16 kB	1.28 kB	TSSOP-20			16 I/O	1.8 V	5.5 V	SMD/SMT		- 40 C	+ 85 C		Reel
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F16G-C-TSSOP20R Silicon Labs 1: 7,53 kr. Non-Stocked Lead-Time 24 Weeks	Mfr. Part No. EFM8BB51F16G-C-TSSOP20R Mouser Part No 634-EFM851GCTSSOP20R	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	Non-Stocked Lead-Time 24 Weeks	Cut Tape 7,53 kr. 5,43 kr. 4,89 kr. 4,30 kr. Reel 3,56 kr. View 4,02 kr. 3,85 kr. 3,73 kr. 3,47 kr.	Min.: 1 Mult.: 1 : 2.500		16 kB	1.28 kB	TSSOP-20			16 I/O	1.8 V	5.5 V	SMD/SMT		- 40 C	+ 85 C		Reel, Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 29 GPIO BB5 8-bit MCU EFM8BB52F16G-C-QFN32R Silicon Labs 1: 6,16 kr. Non-Stocked Lead-Time 24 Weeks	Mfr. Part No. EFM8BB52F16G-C-QFN32R Mouser Part No 634-EFM852F16GQFN32R	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 29 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	Non-Stocked Lead-Time 24 Weeks	Cut Tape 6,16 kr. 4,43 kr. 3,99 kr. 3,51 kr. Reel 2,91 kr. View 3,27 kr. 3,14 kr. 3,04 kr. 2,83 kr.	Min.: 1 Mult.: 1 : 2.500		16 kB	1.28 kB	QFN-32			29 I/O	1.8 V	5.5 V	SMD/SMT		- 40 C	+ 85 C		Reel, Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB52F16G-C-TSSOP20R Silicon Labs 2.500: 3,47 kr. Non-Stocked Lead-Time 24 Weeks	Mfr. Part No. EFM8BB52F16G-C-TSSOP20R Mouser Part No 634-EFM852F16GTOP20R	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	Non-Stocked Lead-Time 24 Weeks	Reel 3,47 kr. 3,38 kr.	Min.: 2.500 Mult.: 2.500 : 2.500		16 kB	1.28 kB	TSSOP-20			16 I/O	1.8 V	5.5 V	SMD/SMT		- 40 C	+ 85 C		Reel
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 25 GPIO BB5 8-bit MCU EFM8BB52F16G-C-TSSOP28R Silicon Labs 2.500: 3,72 kr. Non-Stocked Lead-Time 24 Weeks	Mfr. Part No. EFM8BB52F16G-C-TSSOP28R Mouser Part No 634-EFM852F16GTOP28R	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 25 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	Non-Stocked Lead-Time 24 Weeks	Reel 3,72 kr. 3,63 kr.	Min.: 2.500 Mult.: 2.500 : 2.500		16 kB	1.28 kB	TSSOP-28			16 I/O	1.8 V	5.5 V	SMD/SMT		- 40 C	+ 85 C		Reel
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F8I-C-QFN20 Silicon Labs 1: 6,93 kr. Non-Stocked Lead-Time 24 Weeks	Mfr. Part No. EFM8BB51F8I-C-QFN20 Mouser Part No 634-EFM8B51F8ICQFN20	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	Non-Stocked Lead-Time 24 Weeks	6,93 kr. 5,01 kr. 4,51 kr. 3,96 kr. View 3,70 kr. 3,55 kr. 3,43 kr. 3,27 kr. 3,20 kr.	Min.: 1 Mult.: 1		16 kB	1.28 kB	QFN-20			16 I/O	1.8 V	5.5 V	SMD/SMT		- 40 C	+ 85 C		Cut Tape

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