8-bit Microcontrollers - MCU

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EFM8BB Busy Bee 8-Bit Microcontrollers

Silicon Labs EFM8 EFM8BB Busy Bee 8-Bit Microcontrollers provide state-of-the-art performance by integrating 12-bit ADC, internal temperature sensor, and up to two 12-bit DACs into small packages. Using an efficient, pipelined 8051 core with maximum operating frequency at 50MHz, various communication interfaces, and four channels of configurable logic, the Silicon Labs EFM8BB MCUs are well-suited for many embedded and general-purpose applications.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) 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	Qualification	Packaging
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F64G-D-QFP32R Silicon Labs 1: $3.07 9,640In Stock	Mfr. Part # EFM8BB31F64G-D-QFP32R Mouser Part # 634-EF8BB31F64GDP32R	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	9,640In Stock	Cut Tape $3.07 $2.29 $2.09 $1.88 $1.77 Reel $1.50	Min.: 1 Mult.: 1 : 500	CIP-51 8051	64 kB	4.35 kB	QFP-32	50 MHz	10 bit, 12 bit	28 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C			Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 25 MHz 4 kB Flash 0.5 kB RAM 8-bit Busy Bee MCU EFM8BB10F4G-A-QFN20R Silicon Labs 1: $1.18 4,518In Stock	Mfr. Part # EFM8BB10F4G-A-QFN20R Mouser Part # 634-8BB10F4GAQF20R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 4 kB Flash 0.5 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	4,518In Stock	Cut Tape $1.18 $0.87 $0.783 $0.689 Reel $0.57 View $0.644 $0.617 $0.597 $0.556 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	CIP-51 8051	4 kB	512 B	QFN-20	25 MHz	12 bit	16 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8BB1		Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU EFM8BB10F2I-A-QFN20 Silicon Labs 1: $0.96 3,158In Stock	Mfr. Part # EFM8BB10F2I-A-QFN20 Mouser Part # 634-EFM8BB10F2IAFN20	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	3,158In Stock	$0.96 $0.736 $0.663 $0.583 View $0.545 $0.522 $0.505 $0.429	Min.: 1 Mult.: 1	CIP-51 8051	2 kB	256 B	QFN-20	25 MHz	12 bit	16 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 125 C	EFM8BB1		Tube
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU EFM8BB10F8G-A-SOIC16R Silicon Labs 1: $1.24 5,000In Stock	Mfr. Part # EFM8BB10F8G-A-SOIC16R Mouser Part # 634-8BB10F8GASO16R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	5,000In Stock	Cut Tape $1.24 $0.896 $0.81 $0.716 View Reel $0.537 $0.671 $0.644 $0.616 $0.537 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	CIP-51 8051	8 kB	512 B	SOIC-16	25 MHz	12 bit	13 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8BB1		Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU EFM8BB10F2G-A-QFN20 Silicon Labs 1: $0.86 15,495In Stock	Mfr. Part # EFM8BB10F2G-A-QFN20 Mouser Part # 634-8BB10F2GAQF20	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	15,495In Stock	$0.86 $0.67 $0.601 $0.519 View $0.489 $0.456 $0.426 $0.409 $0.399	Min.: 1 Mult.: 1	CIP-51 8051	2 kB	256 B	QFN-20	25 MHz	12 bit	16 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8BB1		Tube
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU EFM8BB10F8I-A-SOIC16 Silicon Labs 1: $1.26 2,249In Stock	Mfr. Part # EFM8BB10F8I-A-SOIC16 Mouser Part # 634-8BB10F8I-ASOIC16	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	2,249In Stock	$1.26 $0.893 $0.879 $0.87 View $0.854 $0.726 $0.662 $0.637	Min.: 1 Mult.: 1	CIP-51 8051	8 kB	512 B	SOIC-16	25 MHz	12 bit	13 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 125 C	EFM8BB1		Tube
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F32G-D-QFN24R Silicon Labs 1: $2.03 8,102In Stock	Mfr. Part # EFM8BB31F32G-D-QFN24R Mouser Part # 634-EF8BB31F32GDF24R	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	8,102In Stock	Cut Tape $2.03 $1.50 $1.37 $1.22 $1.21 Reel $1.21 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	CIP-51 8051	32 kB	2.3 kB	QFN-24	50 MHz	10 bit, 12 bit	20 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C			Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F64I-D-4QFN24 Silicon Labs 1: $2.85 3,058In Stock	Mfr. Part # EFM8BB31F64I-D-4QFN24 Mouser Part # 634-EF8BB31F64ID4F24	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	3,058In Stock	$2.85 $2.12 $1.94 $1.74 View $1.65 $1.61 $1.49 $1.31	Min.: 1 Mult.: 1	CIP-51 8051	64 kB	4.35 kB	QFN-24	50 MHz	10 bit, 12 bit	20 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 125 C			Tube
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: $0.92 9,875In Stock	Mfr. Part # EFM8BB51F8G-C-QFN20R Mouser Part # 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	9,875In Stock	Cut Tape $0.92 $0.647 $0.58 $0.507 Reel $0.414 View $0.472 $0.451 $0.433 $0.403	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 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F16G-D-QFN24 Silicon Labs 1: $1.61 4,302In Stock	Mfr. Part # EFM8BB31F16G-D-QFN24 Mouser Part # 634-EF8BB31F16GDQF24	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	4,302In Stock	$1.61 $1.24 $1.13 $0.996 View $0.935 $0.899 $0.888 $0.755	Min.: 1 Mult.: 1	CIP-51 8051	16 kB	2.3 kB	QFN-24	50 MHz	10 bit, 12 bit	20 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C			Tube
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F64G-D-QFP32 Silicon Labs 1: $3.00 5,648In Stock	Mfr. Part # EFM8BB31F64G-D-QFP32 Mouser Part # 634-EF8BB31F64GDQP32	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	5,648In Stock	$3.00 $2.29 $2.09 $1.88 View $1.77 $1.73 $1.66 $1.51 $1.50	Min.: 1 Mult.: 1	CIP-51 8051	64 kB	4.35 kB	QFP-32	50 MHz	10 bit, 12 bit	28 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C			Tray
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 25 GPIO BB5 8-bit MCU EFM8BB52F16G-C-TSSOP28 Silicon Labs 1: $1.09 8,238In Stock	Mfr. Part # EFM8BB52F16G-C-TSSOP28 Mouser Part # 634-EFM852F16GTSOP28	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	8,238In Stock	$1.09 $0.781 $0.703 $0.618 View $0.577 $0.553 $0.535 $0.511 $0.499	Min.: 1 Mult.: 1		16 kB	1.28 kB	TSSOP-28			25 I/O	1.8 V	5.5 V	SMD/SMT		- 40 C	+ 85 C			Cut Tape
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB22F16G-C-QFN28R Silicon Labs 1: $2.31 2,666In Stock	Mfr. Part # EFM8BB22F16G-C-QFN28R Mouser Part # 634-8BB22F16GCQFN28R	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	2,666In Stock	Cut Tape $2.31 $1.86 $1.67 $1.49 $1.33 Reel $1.09 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	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	+ 85 C	EFM8BB2		Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F16G-D-QFN24R Silicon Labs 1: $1.70 5,763In Stock	Mfr. Part # EFM8BB31F16G-D-QFN24R Mouser Part # 634-EF8BB31F16GDF24R	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	5,763In Stock	Cut Tape $1.70 $1.24 $1.13 $0.996 View Reel $0.729 $0.935 $0.899 $0.858 $0.729	Min.: 1 Mult.: 1 : 1,500	CIP-51 8051	16 kB	2.3 kB	QFN-24	50 MHz	10 bit, 12 bit	20 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C			Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F16I-D-QFP32 Silicon Labs 1: $2.31 16In Stock	Mfr. Part # EFM8BB31F16I-D-QFP32 Mouser Part # 634-EF8BB31F16IDQP32	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	16In Stock	$2.31 $1.71 $1.56 $1.39 View $1.32 $1.28 $1.26 $1.24	Min.: 1 Mult.: 1	CIP-51 8051	16 kB	2.3 kB	QFP-32	50 MHz	10 bit, 12 bit	28 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 125 C			Tray
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F8I-C-TSSOP20 Silicon Labs 1: $1.00 166In Stock	Mfr. Part # EFM8BB51F8I-C-TSSOP20 Mouser Part # 634-EFM851F8ICTSOP20	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	166In Stock	$1.00 $0.714 $0.643 $0.565 View $0.528 $0.505	Min.: 1 Mult.: 1		8 kB	1.28 kB	TSSOP-20			16 I/O	1.8 V	5.5 V	SMD/SMT		- 40 C	+ 125 C			Cut Tape
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F32G-D-QFN32 Silicon Labs 1: $2.20 457In Stock	Mfr. Part # EFM8BB31F32G-D-QFN32 Mouser Part # 634-EF8BB31F32GDQN32	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	457In Stock	$2.20 $1.62 $1.48 $1.32 View $1.24 $1.20 $1.19 $1.16	Min.: 1 Mult.: 1	CIP-51 8051	32 kB	2.3 kB	QFN-32	50 MHz	10 bit, 12 bit	29 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C			Tray
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F32G-D-QFP32R Silicon Labs 1: $2.50 502In Stock	Mfr. Part # EFM8BB31F32G-D-QFP32R Mouser Part # 634-EF8BB31F32GDP32R	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	502In Stock	Cut Tape $2.50 $1.86 $1.70 $1.58 Reel $1.33	Min.: 1 Mult.: 1 : 500	CIP-51 8051	32 kB	2.3 kB	QFP-32	50 MHz	10 bit, 12 bit	28 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C			Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU EFM8BB10F2G-A-QFN20R Silicon Labs 1: $0.86 15,521In Stock	Mfr. Part # EFM8BB10F2G-A-QFN20R Mouser Part # 634-8BB10F2GAQF20R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	15,521In Stock	Cut Tape $0.86 $0.662 $0.591 $0.539 Reel $0.445 View $0.521 $0.48 $0.455 $0.439 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	CIP-51 8051	2 kB	256 B	QFN-20	25 MHz	12 bit	16 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8BB1		Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU EFM8BB10F8G-A-QFN20R Silicon Labs 1: $0.92 11,606In Stock 73,500On Order	Mfr. Part # EFM8BB10F8G-A-QFN20R Mouser Part # 634-8BB10F8GAQF20R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	11,606In Stock 73,500On Order On Order Ship Dates Mfr. #: EFM8BB10F8G-A-QFN20R Stock: 11,606 Can Ship Immediately On Order: 52,500 Expected 10/2/2026 21,000 Expected 10/16/2026 Factory Lead-Time: 12 Weeks	Cut Tape $0.92 $0.779 $0.64 $0.598 View Reel $0.50 $0.528 $0.513 $0.50 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	CIP-51 8051	8 kB	512 B	QFN-20	25 MHz	12 bit	16 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8BB1		Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB21F16I-C-QSOP24 Silicon Labs 1: $1.91 3,126In Stock End of Life	Mfr. Part # EFM8BB21F16I-C-QSOP24 Mouser Part # 634-8BB21F16ICQSOP24 End of Life	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	3,126In Stock	$1.91 $1.62 $1.42 $1.34 View $1.21 $1.03	Min.: 1 Mult.: 1	CIP-51 8051	16 kB	2.3 kB	QSOP-24	50 MHz	12 bit	21 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 125 C	EFM8BB2		Tube
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F64I-D-5QFN32 Silicon Labs 1: $4.50 1,358In Stock End of Life	Mfr. Part # EFM8BB31F64I-D-5QFN32 Mouser Part # 634-EF8BB31F64ID5F32 End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	1,358In Stock	$4.50 $2.98 $2.72 $2.31 View $2.19 $1.97 $1.83 $1.70 $1.69	Min.: 1 Mult.: 1	CIP-51 8051	64 kB	4.35 kB	QFN-32	50 MHz	10 bit, 12 bit	29 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 125 C			Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB21F16I-C-QFN20 Silicon Labs 1: $1.75 3,268In Stock	Mfr. Part # EFM8BB21F16I-C-QFN20 Mouser Part # 634-8BB21F16I-CQFN20	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	3,268In Stock	$1.75 $1.48 $1.30 $1.21 View $1.18 $1.02 $0.862 $0.807	Min.: 1 Mult.: 1	CIP-51 8051	16 kB	2.3 kB	QFN-20	50 MHz	12 bit	16 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 125 C	EFM8BB2		Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB21F16A-C-QFN20R Silicon Labs 1: $4.46 1,498In Stock	Mfr. Part # EFM8BB21F16A-C-QFN20R Mouser Part # 634-BB21F16ACQFN20R	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	1,498In Stock	Cut Tape $4.46 $2.95 $2.68 $2.28 View Reel $1.90 $2.16 $1.94 $1.90 $1.90	Min.: 1 Mult.: 1 : 1,500	CIP-51 8051	16 kB	2.25 kB	QFN-20	50 MHz	12 bit	16 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 125 C	EFM8BB2	AEC-Q100	Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F16G-D-QFN32R Silicon Labs 1: $1.86 4,082In Stock	Mfr. Part # EFM8BB31F16G-D-QFN32R Mouser Part # 634-EF8BB31F16GDN32R	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	4,082In Stock	Cut Tape $1.86 $1.54 $1.33 $1.25 Reel $0.945 View $1.10 $1.03 $0.92 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	CIP-51 8051	16 kB	2.3 kB	QFN-32	50 MHz	10 bit, 12 bit	29 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C			Reel, Cut Tape, MouseReel

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