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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (EUR) 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 Low Pin Count 8051 Series; 2.4V to 5.5V; -40 to 85 N76E003AT20 Nuvoton 1: 0,714 € 1.227In Stock	Mfr. Part No. N76E003AT20 Mouser Part No 503-N76E003AT20	Nuvoton	8-bit Microcontrollers - MCU Low Pin Count 8051 Series; 2.4V to 5.5V; -40 to 85	Datasheet	1.227In Stock	0,714 € 0,611 € 0,521 € 0,491 € View 0,445 € 0,434 € 0,418 € 0,414 €	Min.: 1 Mult.: 1	8051	18 kB	256 B	TSSOP-20	16 MHz	12 bit	18 I/O	2.4 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 105 C			Tube
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU EFM8UB10F16G-C-QFN20 Silicon Labs 1: 2,22 € 164In Stock	Mfr. Part No. EFM8UB10F16G-C-QFN20 Mouser Part No 634-8UB10F16GCQFN20	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU	Datasheet	164In Stock	2,22 € 1,87 € 1,63 € 1,53 € 1,37 €	Min.: 1 Mult.: 1	CIP-51 8051	16 kB	2.25 kB	QFN-20	50 MHz	12 bit	13 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8UB		Tube
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F16I-C-TSSOP20 Silicon Labs 1: 1,02 € 146In Stock	Mfr. Part No. EFM8BB51F16I-C-TSSOP20 Mouser Part No 634-EFM851F16TSSOP20	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	146In Stock	1,02 € 0,747 € 0,676 € 0,597 € View 0,56 € 0,537 € 0,513 € 0,499 € 0,487 €	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 8051 48 MHz 64 kB flash 4 kB RAM 8-bit Universal Bee MCU EFM8UB20F64G-B-QFN32 Silicon Labs 1: 3,20 € 284In Stock	Mfr. Part No. EFM8UB20F64G-B-QFN32 Mouser Part No 634-EFM8UBF64GBQFN32	Silicon Labs	8-bit Microcontrollers - MCU 8051 48 MHz 64 kB flash 4 kB RAM 8-bit Universal Bee MCU	Datasheet	284In Stock	3,20 € 2,51 € 2,22 € 2,05 € View 1,90 € 1,83 € 1,80 € 1,79 €	Min.: 1 Mult.: 1	CIP-51 8051	64 kB	4.25 kB	QFN-32	48 MHz	10 bit	25 I/O	3.3 V	3.3 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8UB2		Tube
8-bit Microcontrollers - MCU 8051 48 MHz 64 kB flash 4 kB RAM 8-bit Universal Bee MCU EFM8UB20F64G-B-QFN32R Silicon Labs 1: 3,42 € 69In Stock	Mfr. Part No. EFM8UB20F64G-B-QFN32R Mouser Part No 634-EFM8UB64GBQFN32R	Silicon Labs	8-bit Microcontrollers - MCU 8051 48 MHz 64 kB flash 4 kB RAM 8-bit Universal Bee MCU	Datasheet	69In Stock	Cut Tape 3,42 € 2,55 € 2,33 € 2,09 € Reel 1,78 € View 1,98 € 1,93 € 1,83 € 1,75 €	Min.: 1 Mult.: 1 : 2.500	CIP-51 8051	64 kB	4.25 kB	QFN-32	48 MHz	10 bit	25 I/O	3.3 V	3.3 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8UB2		Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB22F16G-C-QFN28 Silicon Labs 1: 1,76 € 1.187In Stock	Mfr. Part No. EFM8BB22F16G-C-QFN28 Mouser Part No 634-8BB22F16GCQFN28	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	1.187In Stock	1,76 € 1,30 € 1,18 € 1,06 € View 0,989 € 0,955 € 0,92 € 0,903 € 0,869 €	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	+ 85 C	EFM8BB2		Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB21F16I-C-QFN20R Silicon Labs 1: 1,53 € 331In Stock	Mfr. Part No. EFM8BB21F16I-C-QFN20R Mouser Part No 634-BB21F16ICQFN20R	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	331In Stock	Cut Tape 1,53 € 1,20 € 1,08 € 0,989 € View Reel 0,771 € 0,955 € 0,912 € 0,771 € MouseReel Available	Min.: 1 Mult.: 1 : 2.500	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		Reel, Cut Tape, MouseReel
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: 1,70 € 166In Stock	Mfr. Part No. EFM8BB22F16G-C-QFN28R Mouser Part No 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	166In Stock	Cut Tape 1,70 € 1,25 € 1,14 € 1,01 € Reel 0,832 € View 0,955 € 0,92 € 0,847 € 0,831 € MouseReel Available	Min.: 1 Mult.: 1 : 2.500	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 EFM8BB21F16G-C-QFN20 Silicon Labs 1: 1,47 € 50In Stock 2.520Expected 1/8/2027	Mfr. Part No. EFM8BB21F16G-C-QFN20 Mouser Part No 634-8BB21F16GCQFN20	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	50In Stock 2.520Expected 1/8/2027	1,47 € 1,25 € 1,09 € 0,912 €	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	+ 85 C	EFM8BB2		Tube
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU EFM8UB11F16G-C-QSOP24 Silicon Labs 1: 2,27 € 122In Stock End of Life	Mfr. Part No. EFM8UB11F16G-C-QSOP24 Mouser Part No 634-8UB11F16GCQSOP24 End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU	Datasheet	122In Stock	2,27 € 1,79 € 1,59 € 1,47 € View 1,38 € 1,33 € 1,28 € 1,26 € 1,24 €	Min.: 1 Mult.: 1	CIP-51 8051	16 kB	2.25 kB	QSOP-24	50 MHz	12 bit	17 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8UB		Tube
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F64I-D-QFP32 Silicon Labs 1: 2,87 € 8In Stock End of Life	Mfr. Part No. EFM8BB31F64I-D-QFP32 Mouser Part No 634-EF8BB31F64IDQP32 End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU	Datasheet	8In Stock	2,87 € 2,14 € 1,96 € 1,75 € 1,73 €	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	+ 125 C			Tray
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: 2,86 € 298In Stock	Mfr. Part No. EFM8BB21F16A-C-QFN20R Mouser Part No 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	298In Stock	Cut Tape 2,86 € 2,13 € 1,95 € 1,75 € Reel 1,49 € View 1,65 € 1,62 € 1,53 € 1,46 €	Min.: 1 Mult.: 1 : 2.500	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 EFM8BB31F16I-D-QFP32 Silicon Labs 1: 2,10 € 8In Stock NRND	Mfr. Part No. EFM8BB31F16I-D-QFP32 Mouser Part No 634-EF8BB31F16IDQP32 NRND	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	8In Stock	2,10 € 1,55 € 1,41 € 1,26 € View 1,19 € 1,15 € 1,11 €	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 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU EFM8LB12F32E-C-QFP32 Silicon Labs 1: 2,98 € 510In Stock NRND	Mfr. Part No. EFM8LB12F32E-C-QFP32 Mouser Part No 634-LB12F32ECQFP32 NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU Learn More about Silicon Labs silabs efm8 laser bee	Datasheet	510In Stock	2,98 € 2,23 € 2,04 € 1,82 € View 1,73 € 1,69 € 1,68 €	Min.: 1 Mult.: 1	CIP-51 8051	32 kB	2.25 kB	QFP-32	72 MHz	10 bit/12 bit/14 bit	28 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 105 C	EFM8LB1		Tray
8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V CY8C3446LTI-085 Infineon Technologies 1: 13,89 € 6In Stock	Mfr. Part No. CY8C3446LTI-085 Mouser Part No 727-CY8C3446LTI-085	Infineon Technologies	8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	6In Stock	13,89 € 10,87 € 9,79 € 9,25 € View 8,83 € 8,57 € 8,43 € Quote	Min.: 1 Mult.: 1	8051	64 kB	8 kB	QFN-68	50 MHz	12 bit	48 I/O	1.71 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	CY8C3446		Tray
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU EFM8BB10F8A-A-QFN20 Silicon Labs 1: 2,19 € 20In Stock	Mfr. Part No. EFM8BB10F8A-A-QFN20 Mouser Part No 634-FM8BB10F8AAQFN20	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	20In Stock	2,19 € 1,63 € 1,48 € 1,32 € View 1,26 € 1,20 € 1,16 € 1,14 € 1,11 €	Min.: 1 Mult.: 1	CIP-51 8051	8 kB	512 B		25 MHz	12 bit	16 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 125 C	EFM8BB1	AEC-Q100	Tube
8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V CY8C3445PVI-094 Infineon Technologies 1: 10,61 € 134In Stock	Mfr. Part No. CY8C3445PVI-094 Mouser Part No 727-CY8C3445PVI-094	Infineon Technologies	8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	134In Stock	10,61 € 9,48 € 7,33 € 7,24 € View 6,96 € 6,46 € 6,30 € Quote	Min.: 1 Mult.: 1	8051	32 kB	4 kB	SSOP-48	50 MHz	12 bit	29 I/O	1.71 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	CY8C3445		Tube
8-bit Microcontrollers - MCU 32K FLASH 4.0 TO 5.5V AT89C51RC-24PU Microchip Technology 1: 4,45 € 1.004In Stock	Mfr. Part No. AT89C51RC-24PU Mouser Part No 556-A89C51RC-24PU	Microchip Technology	8-bit Microcontrollers - MCU 32K FLASH 4.0 TO 5.5V Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	1.004In Stock	4,45 € 4,09 € 4,08 €	Min.: 1 Mult.: 1	8051	32 kB	512 B	PDIP-40	24 MHz	No ADC	32 I/O	4 V	5.5 V	Through Hole	8 bit	- 40 C	+ 85 C	89C		Tube
8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU EFM8LB12F32E-C-QFN24 Silicon Labs 1: 2,61 € 255In Stock	Mfr. Part No. EFM8LB12F32E-C-QFN24 Mouser Part No 634-LB12F32ECQFN24	Silicon Labs	8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU Learn More about Silicon Labs silabs efm8 laser bee	Datasheet	255In Stock	2,61 € 1,94 € 1,77 € 1,59 € View 1,51 € 1,47 € 1,39 € 1,35 € 1,32 €	Min.: 1 Mult.: 1	CIP-51 8051	32 kB	2.25 kB	QFN-24	72 MHz	10 bit/12 bit/14 bit	20 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 105 C	EFM8LB1		Tube
8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V CY8C3246LTI-149 Infineon Technologies 1: 12,35 € 8In Stock	Mfr. Part No. CY8C3246LTI-149 Mouser Part No 727-CY8C3246LTI-149	Infineon Technologies	8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	8In Stock	12,35 € 9,59 € 8,65 € 8,15 € View 7,77 € 7,54 € 7,19 € Quote	Min.: 1 Mult.: 1	8051	64 kB	8 kB	QFN-68	50 MHz	12 bit	46 I/O	1.71 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	CY8C3246		Tray
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F32I-D-4QFN24 Silicon Labs 1: 2,07 € 375In Stock	Mfr. Part No. EFM8BB31F32I-D-4QFN24 Mouser Part No 634-EF8BB31F32ID4F24	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	375In Stock	2,07 € 1,53 € 1,39 € 1,25 € View 1,18 € 1,14 € 1,10 € 1,07 € 1,04 €	Min.: 1 Mult.: 1	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	+ 125 C			Tube
8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU EFM8LB10F16E-C-QFN24 Silicon Labs 1: 1,94 € 90In Stock	Mfr. Part No. EFM8LB10F16E-C-QFN24 Mouser Part No 634-LB10F16ECQFN24	Silicon Labs	8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU Learn More about Silicon Labs silabs efm8 laser bee	Datasheet	90In Stock	1,94 € 1,43 € 1,30 € 1,16 € View 1,09 € 1,06 € 1,02 € 0,998 € 0,972 €	Min.: 1 Mult.: 1	CIP-51 8051	16 kB	1.25 kB	QFN-24	72 MHz	10 bit/12 bit/14 bit	20 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 105 C	EFM8LB1		Tube
8-bit Microcontrollers - MCU 8051 25 MHz 4 kB Flash 0.5 kB RAM 8-bit Busy Bee MCU EFM8BB10F4G-A-QFN20 Silicon Labs 1: 1,05 € 218In Stock	Mfr. Part No. EFM8BB10F4G-A-QFN20 Mouser Part No 634-8BB10F4GAQF20	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	218In Stock	1,05 € 0,765 € 0,692 € 0,612 € View 0,574 € 0,55 € 0,526 € 0,511 € 0,499 €	Min.: 1 Mult.: 1	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		Tube
8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU EFM8LB11F32E-C-QFN24R Silicon Labs 1: 2,40 € 12In Stock	Mfr. Part No. EFM8LB11F32E-C-QFN24R Mouser Part No 634-LB11F32ECQFN24R	Silicon Labs	8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU Learn More about Silicon Labs silabs efm8 laser bee	Datasheet	12In Stock	Cut Tape 2,40 € 1,78 € 1,63 € 1,46 € Reel 1,25 € View 1,38 € 1,35 € 1,28 € 1,22 €	Min.: 1 Mult.: 1 : 2.500	CIP-51 8051	32 kB	2.25 kB	QFN-24	72 MHz	10 bit/12 bit/14 bit	20 I/O	2.2 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 105 C	EFM8LB1		Reel, Cut Tape
8-bit Microcontrollers - MCU Sngl-Cycle 8051 IND 2.4-3.6V 32K ISP FL AT89LP3240-20AU Microchip Technology 1: 9,02 € 60In Stock	Mfr. Part No. AT89LP3240-20AU Mouser Part No 556-AT89LP3240-20AU	Microchip Technology	8-bit Microcontrollers - MCU Sngl-Cycle 8051 IND 2.4-3.6V 32K ISP FL	Datasheet	60In Stock	9,02 € 8,30 € 8,27 €	Min.: 1 Mult.: 1	8051	32 kB	4.25 kB	TQFP-44	20 MHz	10 bit	38 I/O	2.4 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C			Tray