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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	Data Bus Width	Maximum Clock Frequency	Program Memory Size	Data RAM Size	ADC Resolution	Number of I/Os	Supply Voltage - Min	Supply Voltage - Max	Maximum Operating Temperature	Packaging
8-bit Microcontrollers - MCU 32K FLASH 4.0 TO 5.5V AT89C51RC-24PU Microchip Technology 1: £3.88 999In 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	999In Stock	£3.88 £3.57 £3.56	Min.: 1 Mult.: 1	Through Hole	PDIP-40	8051	8 bit	24 MHz	32 kB	512 B	No ADC	32 I/O	4 V	5.5 V	+ 85 C	Tube
8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V CY8C3246LTI-162 Infineon Technologies 1: £9.31 2In Stock	Mfr. Part No. CY8C3246LTI-162 Mouser Part No 727-CY8C3246LTI-162	Infineon Technologies	8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V Learn More about Infineon Technologies cypresspsoc3	Datasheet	2In Stock	£9.31 £7.57 £7.21 £6.27 View £5.98 £5.23 £5.05 Quote	Min.: 1 Mult.: 1	SMD/SMT	QFN-48	8051	8 bit	50 MHz	64 kB	8 kB	12 bit	29 I/O	1.71 V	5.5 V	+ 85 C	Tray
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: £1.69 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	£1.69 £1.25 £1.13 £1.01 View £0.952 £0.925 £0.89 £0.871 £0.849	Min.: 1 Mult.: 1	SMD/SMT	QFN-24	CIP-51 8051	8 bit	72 MHz	16 kB	1.25 kB	10 bit/12 bit/14 bit	20 I/O	2.2 V	3.6 V	+ 105 C	Tube
8-bit Microcontrollers - MCU Sngl-Cycle 8051 IND 2.4-3.6V 32K ISP FL AT89LP3240-20AU Microchip Technology 1: £7.87 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	£7.87 £7.25 £7.22	Min.: 1 Mult.: 1	SMD/SMT	TQFP-44	8051	8 bit	20 MHz	32 kB	4.25 kB	10 bit	38 I/O	2.4 V	3.6 V	+ 85 C	Tray
8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU EFM8LB11F16E-C-QFP32 Silicon Labs 1: £2.25 36In Stock NRND	Mfr. Part No. EFM8LB11F16E-C-QFP32 Mouser Part No 634-LB11F16ECQFP32 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	36In Stock	£2.25 £1.68 £1.53 £1.37 View £1.30 £1.27 £1.20 £1.17 £1.15	Min.: 1 Mult.: 1	SMD/SMT	QFP-32	CIP-51 8051	8 bit	72 MHz	16 kB	1.25 kB	10 bit/12 bit/14 bit	28 I/O	2.2 V	3.6 V	+ 105 C	Tray
8-bit Microcontrollers - MCU 2K FLASH 24MHZ SOIC AT89S2051-24SU Microchip Technology 1: £1.96 3In Stock	Mfr. Part No. AT89S2051-24SU Mouser Part No 556-A89S2051-24SU	Microchip Technology	8-bit Microcontrollers - MCU 2K FLASH 24MHZ SOIC	Datasheet	3In Stock	£1.96 £1.80 £1.63	Min.: 1 Mult.: 1	SMD/SMT	SOIC-20	8051	8 bit	24 MHz	2 kB	256 B	No ADC	15 I/O	2.7 V	5.5 V	+ 85 C	Tube
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU EFM8SB10F8G-A-QFN20 Silicon Labs 1: £1.23 17,031On Order	Mfr. Part No. EFM8SB10F8G-A-QFN20 Mouser Part No 634-8SB10F8GAQF20	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	17,031On Order On Order Ship Dates Mfr. No: EFM8SB10F8G-A-QFN20 Stock: 0 On Order: 2,331 Expected 10/11/2026 14,700 Expected 18/12/2026 Factory Lead Time: 12 Weeks	£1.23 £0.917 £0.834 £0.735 View £0.69 £0.663 £0.656 £0.613 £0.599	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	CIP-51 8051	8 bit	25 MHz	8 kB	512 B	12 bit	16 I/O	1.8 V	3.6 V	+ 85 C	Tube
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU EFM8UB10F16G-C-QFN20R Silicon Labs 1: £1.98 49,037On Order	Mfr. Part No. EFM8UB10F16G-C-QFN20R Mouser Part No 634-8UB10F16GCQFN20R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU	Datasheet	49,037On Order On Order Ship Dates Mfr. No: EFM8UB10F16G-C-QFN20R Stock: 0 On Order: 40,037 Expected 08/01/2027 9,000 Expected 12/01/2027 Factory Lead Time: 31 Weeks	Cut Tape £1.98 £1.66 £1.46 £1.38 View Reel £1.13 £1.35 £1.20 £1.13 £1.13 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-20	CIP-51 8051	8 bit	50 MHz	16 kB	2.25 kB	12 bit	13 I/O	2.2 V	3.6 V	+ 85 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-QFN20R Silicon Labs 1: £1.20 93,467Expected 08/01/2027	Mfr. Part No. EFM8BB21F16G-C-QFN20R Mouser Part No 634-8BB21F16GCQFN20R	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	93,467Expected 08/01/2027	Cut Tape £1.20 £0.882 £0.796 £0.708 View Reel £0.592 £0.665 £0.639 £0.631 £0.592 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-20	CIP-51 8051	8 bit	50 MHz	16 kB	2.3 kB	12 bit	16 I/O	2.2 V	3.6 V	+ 85 C	Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU EFM8LB12F64E-C-QFP32 Silicon Labs 1: £2.98 23,750On Order NRND	Mfr. Part No. EFM8LB12F64E-C-QFP32 Mouser Part No 634-LB12F64ECQFP32 NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU Learn More about Silicon Labs silabs efm8 laser bee	Datasheet	23,750On Order On Order Ship Dates Mfr. No: EFM8LB12F64E-C-QFP32 Stock: 0 On Order: 6,250 Expected 08/01/2027 17,500 Expected 15/01/2027 Factory Lead Time: 26 Weeks	£2.98 £2.40 £2.11 £2.01 View £1.88 £1.80	Min.: 1 Mult.: 1	SMD/SMT	QFP-32	CIP-51 8051	8 bit	72 MHz	64 kB	4.25 kB	10 bit/12 bit/14 bit	28 I/O	2.2 V	3.6 V	+ 105 C	Tray
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU EFM8BB10F8G-A-QFN20 Silicon Labs 1: £0.899 2,519Expected 17/11/2026	Mfr. Part No. EFM8BB10F8G-A-QFN20 Mouser Part No 634-8BB10F8GAQF20	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	2,519Expected 17/11/2026	£0.899 £0.652 £0.591 £0.522 View £0.49 £0.47 £0.449 £0.437 £0.425	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	CIP-51 8051	8 bit	25 MHz	8 kB	512 B	12 bit	16 I/O	2.2 V	3.6 V	+ 85 C	Tube
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU EFM8BB10F8I-A-QFN20 Silicon Labs 1: £1.01 5,040On Order	Mfr. Part No. EFM8BB10F8I-A-QFN20 Mouser Part No 634-FM8BB10F8IAQFN20	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	5,040On Order On Order Ship Dates Mfr. No: EFM8BB10F8I-A-QFN20 Stock: 0 On Order: 2,520 Expected 04/12/2026 2,520 Expected 21/01/2027 Factory Lead Time: 12 Weeks	£1.01 £0.734 £0.664 £0.588 View £0.55 £0.528 £0.505 £0.491 £0.479	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	CIP-51 8051	8 bit	25 MHz	8 kB	512 B	12 bit	16 I/O	2.2 V	3.6 V	+ 125 C	Tube
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU EFM8BB10F8G-A-SOIC16 Silicon Labs 1: £0.934 3,017Expected 27/11/2026	Mfr. Part No. EFM8BB10F8G-A-SOIC16 Mouser Part No 634-8BB10F8GASO16	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	3,017Expected 27/11/2026	£0.934 £0.78 £0.628 £0.577 View £0.558 £0.522 £0.509 £0.497 £0.491	Min.: 1 Mult.: 1	SMD/SMT	SOIC-16	CIP-51 8051	8 bit	25 MHz	8 kB	512 B	12 bit	13 I/O	2.2 V	3.6 V	+ 85 C	Tube
8-bit Microcontrollers - MCU 8051 25 MHz 32 kB flash 4 kB RAM 8-bit Sleepy Bee MCU EFM8SB20F32G-B-QFN24R Silicon Labs 1: £1.86 1,498Expected 01/01/2027	Mfr. Part No. EFM8SB20F32G-B-QFN24R Mouser Part No 634-EFM8SB32GBQFN24R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 32 kB flash 4 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	1,498Expected 01/01/2027	Cut Tape £1.86 £1.58 £1.24 £1.08 Reel £0.899 View £0.995 £0.969 £0.934 £0.882	Min.: 1 Mult.: 1 : 1,500	SMD/SMT	QFN-24	CIP-51 8051	8 bit	25 MHz	32 kB	4.25 kB	10 bit	16 I/O	1.8 V	3.6 V	+ 85 C	Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 4K FLASH 2.7 TO 5.5V 12MHZ 4V-5.5V AT89C4051-12SU Microchip Technology 1: £1.13 552On Order	Mfr. Part No. AT89C4051-12SU Mouser Part No 556-A89C405112SU	Microchip Technology	8-bit Microcontrollers - MCU 8051 4K FLASH 2.7 TO 5.5V 12MHZ 4V-5.5V	Datasheet	552On Order	£1.13 £1.04 £0.934	Min.: 1 Mult.: 1	SMD/SMT	SOIC-20	8051	8 bit	12 MHz	4 kB	128 B	No ADC	15 I/O	2.7 V	6 V	+ 85 C	Tube
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: £1.69 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	£1.69 £1.25 £1.13 £1.01 View £0.952 £0.925 £0.89 £0.871 £0.849	Min.: 1 Mult.: 1	SMD/SMT	QFN-28	CIP-51 8051	8 bit	50 MHz	16 kB	2.3 kB	12 bit	22 I/O	2.2 V	3.6 V	+ 125 C	Tube
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB52F32G-C-TSSOP20 Silicon Labs 1: £1.05 197Expected 18/12/2026	Mfr. Part No. EFM8BB52F32G-C-TSSOP20 Mouser Part No 634-EFM852F32GCTOP20	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	197Expected 18/12/2026	£1.05 £0.826 £0.731 £0.633 View £0.632 £0.607 £0.58 £0.563 £0.55	Min.: 1 Mult.: 1	SMD/SMT	TSSOP-20				16 kB	1.28 kB		16 I/O	1.8 V	5.5 V	+ 85 C	Cut Tape
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU EFM8SB10F8G-A-CSP16 Silicon Labs 1: £1.42 3,550On Order NRND	Mfr. Part No. EFM8SB10F8G-A-CSP16 Mouser Part No 634-8SB10F8G-A-CSP16 NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	3,550On Order On Order Ship Dates Mfr. No: EFM8SB10F8G-A-CSP16 Stock: 0 On Order: 1,150 Expected 06/11/2026 2,400 Expected 10/11/2026 Factory Lead Time: 20 Weeks	£1.42 £1.11 £0.995 £0.882 View £0.849 £0.796 £0.788 £0.759 £0.751	Min.: 1 Mult.: 1	SMD/SMT	CSP-16	CIP-51 8051	8 bit	25 MHz	8 kB	512 B	12 bit	13 I/O	1.8 V	3.6 V	+ 85 C	Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 25 GPIO BB5 8-bit MCU EFM8BB52F32I-C-TSSOP28 Silicon Labs 1: £1.06 200Expected 04/12/2026	Mfr. Part No. EFM8BB52F32I-C-TSSOP28 Mouser Part No 634-EFM852F32ICTOP28	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 25 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	200Expected 04/12/2026	£1.06 £0.826 £0.732 £0.658 View £0.636 £0.596 £0.582 £0.574 £0.567	Min.: 1 Mult.: 1	SMD/SMT	TSSOP-28				16 kB	1.28 kB		16 I/O	1.8 V	5.5 V	+ 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 EFM8BB52F16G-C-TSSOP20 Silicon Labs 1: £0.856 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	£0.856 £0.641 £0.573 £0.513 View £0.512 £0.488 £0.481 £0.467 £0.455	Min.: 1 Mult.: 1	SMD/SMT	TSSOP-20				16 kB	1.28 kB		16 I/O	1.8 V	5.5 V	+ 85 C	Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 29 GPIO BB5 8-bit MCU EFM8BB52F16I-C-QFN32 Silicon Labs 1: £0.721 2,200On Order	Mfr. Part No. EFM8BB52F16I-C-QFN32 Mouser Part No 634-EFMB52F16ICQFN32	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	2,200On Order	£0.721 £0.503 £0.451 £0.395 View £0.367 £0.36 £0.359	Min.: 1 Mult.: 1	SMD/SMT	QFN-32				16 kB	1.28 kB		16 I/O	1.8 V	5.5 V	+ 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 EFM8BB52F16I-C-TSSOP20 Silicon Labs 1: £0.882 198Expected 01/01/2027	Mfr. Part No. EFM8BB52F16I-C-TSSOP20 Mouser Part No 634-EFM852F16ITSOP20	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	198Expected 01/01/2027	£0.882 £0.636 £0.572 £0.503 View £0.471 £0.45 £0.437 £0.416 £0.406	Min.: 1 Mult.: 1	SMD/SMT	TSSOP-20				16 kB	1.28 kB		16 I/O	1.8 V	5.5 V	+ 85 C	Cut Tape
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU EFM8UB10F16G-C-QFN28 Silicon Labs 1: £1.97 526Expected 08/01/2027	Mfr. Part No. EFM8UB10F16G-C-QFN28 Mouser Part No 634-8UB10F16GCQFN28	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU	Datasheet	526Expected 08/01/2027	£1.97 £1.47 £1.34 £1.20 View £1.13 £1.09 £1.05	Min.: 1 Mult.: 1	SMD/SMT	QFN-28	CIP-51 8051	8 bit	50 MHz	16 kB	2.25 kB	12 bit	22 I/O	2.2 V	3.6 V	+ 85 C	Tube
ARM Microcontrollers - MCU Scalable Mainstream 32-bit Microcontroller (MCU) based on ARM Cortex-M3 Core LPC1754FBD80K NXP Semiconductors 1: £9.32 1,177Expected 04/01/2027	Mfr. Part No. LPC1754FBD80K Mouser Part No 771-LPC1754FBD80K	NXP Semiconductors	ARM Microcontrollers - MCU Scalable Mainstream 32-bit Microcontroller (MCU) based on ARM Cortex-M3 Core Learn More about NXP Semiconductors nxp_lpc17xx	Datasheet	1,177Expected 04/01/2027	£9.32 £7.32 £6.51 £6.43 View £6.26 £5.91 £5.84	Min.: 1 Mult.: 1	SMD/SMT	LQFP-80	ARM Cortex M3	32 bit	100 MHz	128 kB	32 kB	12 bit	52 I/O	2.4 V	3.6 V	+ 85 C	Tray
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB 8-bit MCU C8051F327-GMR Silicon Labs 1: £3.75 3,007In Stock	Mfr. Part No. C8051F327-GMR Mouser Part No 634-C8051F327-GMR	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 16 kB 8-bit MCU	Datasheet	3,007In Stock	Cut Tape £3.75 £2.86 £2.64 £2.38 View Reel £1.99 £2.27 £2.20 £1.99	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-28	8051	8 bit	25 MHz	16 kB	1.54 kB		15 I/O	2.7 V	5.25 V	+ 85 C	Reel, Cut Tape