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8051 microcontroller Microcontrollers - MCU

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) 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	Packaging
8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V CY8C3246PVI-122 Infineon Technologies 1: £7.83 586In Stock	Mfr. Part No. CY8C3246PVI-122 Mouser Part No 727-CY8C3246PVI-122	Infineon Technologies	8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	586In Stock	£7.83 £6.93 £5.35 £4.75 View £4.40 £4.38 £4.31 Quote	Min.: 1 Mult.: 1	SMD/SMT	SSOP-48	8051	64 kB	8 bit	12 bit	50 MHz	29 I/O	8 kB	1.71 V	5.5 V	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU EFM8SB20F64G-B-QFN24 Silicon Labs 1: £2.28 2,654In Stock NRND	Mfr. Part No. EFM8SB20F64G-B-QFN24 Mouser Part No 634-EFM8SBF64GBQFN24 NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	2,654In Stock	£2.28 £1.76 £1.55 £1.48 £1.26	Min.: 1 Mult.: 1	SMD/SMT	QFN-24	CIP-51 8051	64 kB	8 bit	10 bit	25 MHz	16 I/O	4.25 kB	1.8 V	3.6 V	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V CY8C3245LTI-144 Infineon Technologies 1: £7.82 195In Stock	Mfr. Part No. CY8C3245LTI-144 Mouser Part No 727-CY8C3245LTI-144	Infineon Technologies	8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	195In Stock	£7.82 £6.09 £5.40 £5.19 View £4.96 £4.58 £4.51 Quote	Min.: 1 Mult.: 1	SMD/SMT	QFN-48	8051	32 kB	8 bit	12 bit	50 MHz	31 I/O	4 kB	1.71 V	5.5 V	- 40 C	+ 85 C	Tray
8-bit Microcontrollers - MCU Sngl-Cycle 8051 IND 2.4-3.6V 32K ISP FL AT89LP3240-20MU Microchip Technology 1: £3.57 315In Stock	Mfr. Part No. AT89LP3240-20MU Mouser Part No 556-AT89LP3240-20MU	Microchip Technology	8-bit Microcontrollers - MCU Sngl-Cycle 8051 IND 2.4-3.6V 32K ISP FL	Datasheet	315In Stock	£3.57 £3.28 £2.98	Min.: 1 Mult.: 1	SMD/SMT	VQFN-44	8051	32 kB	8 bit	10 bit	20 MHz	38 I/O	4.25 kB	2.4 V	3.6 V	- 40 C	+ 85 C	Tray
8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V CY8C3246PVI-147 Infineon Technologies 1: £8.99 371In Stock	Mfr. Part No. CY8C3246PVI-147 Mouser Part No 727-CY8C3246PVI-147	Infineon Technologies	8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	371In Stock	£8.99 £8.49 £6.20 £5.96 View £5.71 £5.54 £5.43 Quote	Min.: 1 Mult.: 1	SMD/SMT	SSOP-48	8051	64 kB	8 bit	12 bit	50 MHz	31 I/O	8 kB	1.71 V	5.5 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 EFM8LB11F32E-C-QFN24 Silicon Labs 1: £2.10 723In Stock	Mfr. Part No. EFM8LB11F32E-C-QFN24 Mouser Part No 634-LB11F32ECQFN24	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	723In Stock	£2.10 £1.55 £1.42 £1.27 View £1.20 £1.18 £1.13 £1.00	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 48 MHz 32 kB flash 2 kB RAM 8-bit Universal Bee MCU EFM8UB20F32G-B-QFN32 Silicon Labs 1: £2.43 587In Stock NRND	Mfr. Part No. EFM8UB20F32G-B-QFN32 Mouser Part No 634-EFM8UBF32GBQFN32 NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 48 MHz 32 kB flash 2 kB RAM 8-bit Universal Bee MCU	Datasheet	587In Stock	£2.43 £1.93 £1.71 £1.58 View £1.49 £1.47 £1.44 £1.37 £1.36	Min.: 1 Mult.: 1	SMD/SMT	QFN-32	CIP-51 8051	32 kB	8 bit	10 bit	48 MHz	25 I/O	2.25 kB	3.3 V	3.3 V	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU 32K FLASH 4.0 TO 5.5V AT89C51RC-24AU Microchip Technology 1: £2.37 3,742In Stock	Mfr. Part No. AT89C51RC-24AU Mouser Part No 556-A89C51RC-24AU	Microchip Technology	8-bit Microcontrollers - MCU 32K FLASH 4.0 TO 5.5V Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	3,742In Stock	£2.37 £2.18	Min.: 1 Mult.: 1	SMD/SMT	TQFP-44	8051	32 kB	8 bit	No ADC	24 MHz	32 I/O	512 B	4 V	5.5 V	- 40 C	+ 85 C	Tray
8-bit Microcontrollers - MCU Single-Cycle 8051 8K ISP Flash MCU AT89LP52-20AU Microchip Technology 1: £1.29 2,754In Stock	Mfr. Part No. AT89LP52-20AU Mouser Part No 556-AT89LP52-20AU	Microchip Technology	8-bit Microcontrollers - MCU Single-Cycle 8051 8K ISP Flash MCU Learn More about Microchip Technology atmelat89lp52	Datasheet	2,754In Stock	£1.29 £1.17 £1.07	Min.: 1 Mult.: 1	SMD/SMT	TQFP-44	8051	8 kB	8 bit	No ADC	20 MHz	36 I/O	256 B	2.4 V	5.5 V	- 40 C	+ 85 C	Tray
8-bit Microcontrollers - MCU 8051 4K FLASH 2.7 TO 5.5V 24MHZ 4V-5.5V AT89C4051-24PU Microchip Technology 1: £1.59 2,246In Stock	Mfr. Part No. AT89C4051-24PU Mouser Part No 556-A89C4051-24PU	Microchip Technology	8-bit Microcontrollers - MCU 8051 4K FLASH 2.7 TO 5.5V 24MHZ 4V-5.5V	Datasheet	2,246In Stock	£1.59 £1.46 £1.32	Min.: 1 Mult.: 1	Through Hole	PDIP-20	8051	4 kB	8 bit	No ADC	24 MHz	15 I/O	128 B	4 V	6 V	- 40 C	+ 85 C	Tube
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: £0.691 63,706In Stock 1,500On Order	Mfr. Part No. EFM8BB10F8G-A-QFN20R Mouser Part No 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	63,706In Stock 1,500On Order	Cut Tape £0.691 £0.585 £0.48 £0.449 £0.42 Reel £0.42 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-20	CIP-51 8051	8 kB	8 bit	12 bit	25 MHz	16 I/O	512 B	2.2 V	3.6 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU Single-Cycle 8051 8K ISP Flash MCU AT89LP52-20JU Microchip Technology 1: £2.59 103In Stock	Mfr. Part No. AT89LP52-20JU Mouser Part No 556-AT89LP52-20JU	Microchip Technology	8-bit Microcontrollers - MCU Single-Cycle 8051 8K ISP Flash MCU Learn More about Microchip Technology atmelat89lp52	Datasheet	103In Stock	£2.59 £2.37	Min.: 1 Mult.: 1	SMD/SMT	PLCC-44	8051	8 kB	8 bit	No ADC	20 MHz	36 I/O	256 B	2.4 V	5.5 V	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 2 kB RAM 8-bit Universal Bee MCU EFM8UB10F8G-C-QFN20R Silicon Labs 1: £1.07 50,313In Stock	Mfr. Part No. EFM8UB10F8G-C-QFN20R Mouser Part No 634-8UB10F8GCQFN20R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 2 kB RAM 8-bit Universal Bee MCU	Datasheet	50,313In Stock	Cut Tape £1.07 £0.834 £0.749 £0.698 Reel £0.621 View £0.665 £0.65 £0.596 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-20	CIP-51 8051	8 kB	8 bit	12 bit	50 MHz	13 I/O	2.25 kB	2.2 V	3.6 V	- 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 EFM8BB31F64G-D-QFP32R Silicon Labs 1: £2.43 8,637In Stock	Mfr. Part No. EFM8BB31F64G-D-QFP32R Mouser Part No 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	8,637In Stock	Cut Tape £2.43 £1.81 £1.65 £1.48 £1.41 Reel £1.16	Min.: 1 Mult.: 1 : 500	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	+ 85 C	Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU EFM8SB10F8G-A-QFN24R Silicon Labs 1: £1.32 3,031In Stock	Mfr. Part No. EFM8SB10F8G-A-QFN24R Mouser Part No 634-8SB10F8GAQF24R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU	Datasheet	3,031In Stock	Cut Tape £1.32 £1.04 £0.925 £0.841 Reel £0.703 View £0.811 £0.759 £0.728 £0.695 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT		CIP-51 8051	8 kB	8 bit	12 bit	25 MHz	17 I/O	512 B	1.8 V	3.6 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V CY8C3446LTI-073 Infineon Technologies 1: £10.90 2,600In Stock	Mfr. Part No. CY8C3446LTI-073 Mouser Part No 727-CY8C3446LTI-073	Infineon Technologies	8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	2,600In Stock	£10.90 £8.88 £7.94 £7.64 View £7.32 £7.12 £7.05 Quote	Min.: 1 Mult.: 1	SMD/SMT	QFN-48	8051	64 kB	8 bit	12 bit	50 MHz	31 I/O	8 kB	1.71 V	5.5 V	- 40 C	+ 85 C	Tray
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Sleepy Bee MCU EFM8SB10F2G-A-QFN20 Silicon Labs 1: £0.995 7,303In Stock	Mfr. Part No. EFM8SB10F2G-A-QFN20 Mouser Part No 634-8SB10F2GAQF20	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	7,303In Stock	£0.995 £0.773 £0.689 £0.613 View £0.593 £0.561 £0.549 £0.53 £0.505	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	CIP-51 8051	2 kB	8 bit	12 bit	25 MHz	16 I/O	256 B	1.8 V	3.6 V	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Sleepy Bee MCU EFM8SB10F2G-A-QFN20R Silicon Labs 1: £1.02 3,318In Stock 16,500Expected 04/12/2026	Mfr. Part No. EFM8SB10F2G-A-QFN20R Mouser Part No 634-8SB10F2GAQF20R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Sleepy Bee MCU	Datasheet	3,318In Stock 16,500Expected 04/12/2026	Cut Tape £1.02 £0.788 £0.696 £0.634 Reel £0.574 View £0.618 £0.574 £0.506 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-20	CIP-51 8051	2 kB	8 bit	12 bit	25 MHz	16 I/O	256 B	1.8 V	3.6 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU EFM8BB50F4I-A-SOIC16 Silicon Labs 1: £0.766 648In Stock	Mfr. Part No. EFM8BB50F4I-A-SOIC16 Mouser Part No 634-M8BB50F4IASOIC16	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU Learn More about Silicon Labs efm8bb50 mcus	Datasheet	648In Stock	£0.766 £0.552 £0.497 £0.437 View £0.409 £0.391 £0.378 £0.362 £0.353	Min.: 1 Mult.: 1	SMD/SMT	SOIC-16		4 kB	8 bit	12 bit	50 MHz	12 I/O	512 B	1.8 V	5.5 V	- 40 C	+ 125 C	Tube
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU EFM8BB50F8G-A-SOIC16 Silicon Labs 1: £0.788 995In Stock	Mfr. Part No. EFM8BB50F8G-A-SOIC16 Mouser Part No 634-M8BB50F8GASOIC16	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU Learn More about Silicon Labs efm8bb50 mcus	Datasheet	995In Stock	£0.788 £0.614 £0.545 £0.488 View £0.457 £0.437 £0.423 £0.404 £0.394	Min.: 1 Mult.: 1	SMD/SMT	SOIC-16		8 kB	8 bit	12 bit	50 MHz	12 I/O	512 B	1.8 V	5.5 V	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU Single Cycle 8051 4K ISP FL AT89LP51-20AU Microchip Technology 1: £1.29 610In Stock	Mfr. Part No. AT89LP51-20AU Mouser Part No 556-AT89LP51-20AU	Microchip Technology	8-bit Microcontrollers - MCU Single Cycle 8051 4K ISP FL Learn More about Microchip Technology atmelat89lp52	Datasheet	610In Stock	£1.29 £1.17 £1.07	Min.: 1 Mult.: 1	SMD/SMT	TQFP-44	8051	4 kB	8 bit	No ADC	20 MHz	36 I/O	256 B	2.4 V	5.5 V	- 40 C	+ 85 C	Tray
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 29 GPIO BB5 8-bit MCU EFM8BB52F32G-C-QFN32R Silicon Labs 1: £0.834 4,000In Stock	Mfr. Part No. EFM8BB52F32G-C-QFN32R Mouser Part No 634-EFM852F32GQFN32R	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 29 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	4,000In Stock	Cut Tape £0.834 £0.602 £0.542 £0.477 Reel £0.395 View £0.446 £0.426 £0.413 £0.385	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-32		16 kB				16 I/O	1.28 kB	1.8 V	5.5 V	- 40 C	+ 85 C	Reel, Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 9 GPIO BB5 8-bit MCU EFM8BB50F4G-A-QFN12 Silicon Labs 1: £0.563 706In Stock	Mfr. Part No. EFM8BB50F4G-A-QFN12 Mouser Part No 634-M8BB50F4GAQFN12	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 9 GPIO BB5 8-bit MCU Learn More about Silicon Labs efm8bb50 mcus	Datasheet	706In Stock	£0.563 £0.436 £0.403 £0.371 View £0.293 £0.281 £0.273	Min.: 1 Mult.: 1	SMD/SMT	QFN-12		4 kB	8 bit	12 bit	50 MHz	9 I/O	512 B	1.8 V	5.5 V	- 40 C	+ 85 C	Cut Tape
8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU EFM8LB10F16E-C-QFP32 Silicon Labs 1: £2.10 1,249In Stock NRND	Mfr. Part No. EFM8LB10F16E-C-QFP32 Mouser Part No 634-LB10F16ECQFP32 NRND	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	1,249In Stock	£2.10 £1.56 £1.43 £1.28 View £1.21 £1.20 £1.10	Min.: 1 Mult.: 1	SMD/SMT	QFP-32	CIP-51 8051	16 kB	8 bit	10 bit/12 bit/14 bit	72 MHz	28 I/O	1.25 kB	2.2 V	3.6 V	- 40 C	+ 105 C	Tray
8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V CY8C3245LTI-163 Infineon Technologies 1: £7.32 533In Stock	Mfr. Part No. CY8C3245LTI-163 Mouser Part No 727-CY8C3245LTI-163	Infineon Technologies	8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	533In Stock	£7.32 £5.70 £5.05 £4.85 View £4.62 £4.32 Quote	Min.: 1 Mult.: 1	SMD/SMT	QFN-68	8051	32 kB	8 bit	12 bit	50 MHz	46 I/O	4 kB	1.71 V	5.5 V	- 40 C	+ 85 C	Tray