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8051 microcontroller Microcontrollers - MCU

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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.	Mounting Style	Package/Case	Core	Program Memory Size	Data Bus Width	ADC Resolution	Maximum Clock Frequency	Number of I/Os	Data RAM Size	Supply Voltage - Min	Supply Voltage - Max	Minimum Operating Temperature	Maximum Operating Temperature	Qualification	Packaging
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F16G-C-TSSOP20 Silicon Labs 1: €0.86 1,452In Stock	Mfr. Part No. EFM8BB51F16G-C-TSSOP20 Mouser Part No 634-EFM8516GCTSSOP20	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	1,452In Stock	€0.86 €0.68 €0.67 €0.617 View €0.477 €0.465	Min.: 1 Mult.: 1	SMD/SMT	TSSOP-20		16 kB				16 I/O	1.28 kB	1.8 V	5.5 V	- 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-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	SMD/SMT	TSSOP-20		16 kB				16 I/O	1.28 kB	1.8 V	5.5 V	- 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 EFM8BB31F16G-D-QFN32 Silicon Labs 1: €1.51 1,432In Stock	Mfr. Part No. EFM8BB31F16G-D-QFN32 Mouser Part No 634-EF8BB31F16GDQN32	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	1,432In Stock	€1.51 €1.28 €1.13 €1.07 View €0.946 €0.903 €0.869 €0.832 €0.823	Min.: 1 Mult.: 1	SMD/SMT	QFN-32	CIP-51 8051	16 kB	8 bit	10 bit, 12 bit	50 MHz	29 I/O	2.3 kB	2.2 V	3.6 V	- 40 C	+ 85 C		Tray
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	SMD/SMT	TSSOP-20	8051	18 kB	8 bit	12 bit	16 MHz	18 I/O	256 B	2.4 V	5.5 V	- 40 C	+ 105 C		Tube
8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V CY8C3446AXI-099 Infineon Technologies 1: €14.67 62In Stock 180Expected 09/11/2026	Mfr. Part No. CY8C3446AXI-099 Mouser Part No 727-CY8C3446AXI-099	Infineon Technologies	8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	62In Stock 180Expected 09/11/2026	€14.67 €11.15 €10.68 €9.41 View €8.95 €8.65 €8.38 Quote	Min.: 1 Mult.: 1	SMD/SMT	TQFP-100	8051	64 kB	8 bit	12 bit	50 MHz	72 I/O	8 kB	1.71 V	5.5 V	- 40 C	+ 85 C		Tray
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	SMD/SMT	QFN-32	CIP-51 8051	64 kB	8 bit	10 bit	48 MHz	25 I/O	4.25 kB	3.3 V	3.3 V	- 40 C	+ 85 C		Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU EFM8UB10F16G-C-QFN28R Silicon Labs 1: €2.33 105In Stock 7,500Expected 08/01/2027	Mfr. Part No. EFM8UB10F16G-C-QFN28R Mouser Part No 634-8UB10F16GCQFN28R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU	Datasheet	105In Stock 7,500Expected 08/01/2027	Cut Tape €2.33 €1.96 €1.72 €1.63 View Reel €1.37 €1.41 €1.37 €1.37	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-28	CIP-51 8051	16 kB	8 bit	12 bit	50 MHz	22 I/O	2.25 kB	2.2 V	3.6 V	- 40 C	+ 85 C		Reel, Cut Tape
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	SMD/SMT	QFN-20	CIP-51 8051	16 kB	8 bit	12 bit	50 MHz	13 I/O	2.25 kB	2.2 V	3.6 V	- 40 C	+ 85 C		Tube
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	SMD/SMT	QFN-32	CIP-51 8051	64 kB	8 bit	10 bit	48 MHz	25 I/O	4.25 kB	3.3 V	3.3 V	- 40 C	+ 85 C		Tube
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: €1.81 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	€1.81 €1.52 €1.30 €1.23 View €1.20 €1.07 €0.851 €0.832	Min.: 1 Mult.: 1	SMD/SMT	QFN-28	CIP-51 8051	16 kB	8 bit	12 bit	50 MHz	22 I/O	2.3 kB	2.2 V	3.6 V	- 40 C	+ 85 C		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: €1.59 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 €1.59 €1.35 €1.19 €1.12 View Reel €0.777 €0.894 €0.856 €0.777 €0.777 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-20	CIP-51 8051	16 kB	8 bit	12 bit	50 MHz	16 I/O	2.25 kB	2.2 V	3.6 V	- 40 C	+ 125 C		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 08/01/2027	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 08/01/2027	€1.47 €1.25 €1.09 €0.912	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	CIP-51 8051	16 kB	8 bit	12 bit	50 MHz	16 I/O	2.3 kB	2.2 V	3.6 V	- 40 C	+ 85 C		Tube
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	SMD/SMT	QFP-32	CIP-51 8051	32 kB	8 bit	10 bit/12 bit/14 bit	72 MHz	28 I/O	2.25 kB	2.2 V	3.6 V	- 40 C	+ 105 C		Tray
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	SMD/SMT	QFP-32	CIP-51 8051	16 kB	8 bit	10 bit, 12 bit	50 MHz	28 I/O	2.3 kB	2.2 V	3.6 V	- 40 C	+ 125 C		Tray
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	SMD/SMT	QFP-32	CIP-51 8051	64 kB	8 bit	10 bit, 12 bit	50 MHz	28 I/O	4.35 kB	2.2 V	3.6 V	- 40 C	+ 125 C		Tray
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	SMD/SMT	SSOP-48	8051	32 kB	8 bit	12 bit	50 MHz	29 I/O	4 kB	1.71 V	5.5 V	- 40 C	+ 85 C		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: €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	SMD/SMT	QFN-20	CIP-51 8051	16 kB	8 bit	12 bit	50 MHz	16 I/O	2.25 kB	2.2 V	3.6 V	- 40 C	+ 125 C	AEC-Q100	Reel, Cut Tape
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	SMD/SMT		CIP-51 8051	8 kB	8 bit	12 bit	25 MHz	16 I/O	512 B	2.2 V	3.6 V	- 40 C	+ 125 C	AEC-Q100	Tube
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	SMD/SMT	QFN-68	8051	64 kB	8 bit	12 bit	50 MHz	48 I/O	8 kB	1.71 V	5.5 V	- 40 C	+ 85 C		Tray
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	SMD/SMT	QFN-24	CIP-51 8051	32 kB	8 bit	10 bit/12 bit/14 bit	72 MHz	20 I/O	2.25 kB	2.2 V	3.6 V	- 40 C	+ 105 C		Reel, Cut Tape
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	SMD/SMT	QFN-24	CIP-51 8051	32 kB	8 bit	10 bit/12 bit/14 bit	72 MHz	20 I/O	2.25 kB	2.2 V	3.6 V	- 40 C	+ 105 C		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	SMD/SMT	QFN-20	CIP-51 8051	4 kB	8 bit	12 bit	25 MHz	16 I/O	512 B	2.2 V	3.6 V	- 40 C	+ 85 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	SMD/SMT	QFN-24	CIP-51 8051	16 kB	8 bit	10 bit/12 bit/14 bit	72 MHz	20 I/O	1.25 kB	2.2 V	3.6 V	- 40 C	+ 105 C		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	SMD/SMT	QFN-68	8051	64 kB	8 bit	12 bit	50 MHz	46 I/O	8 kB	1.71 V	5.5 V	- 40 C	+ 85 C		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	SMD/SMT	QFN-24	CIP-51 8051	32 kB	8 bit	10 bit, 12 bit	50 MHz	20 I/O	2.3 kB	2.2 V	3.6 V	- 40 C	+ 125 C		Tube