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8051 Core 8 bit Embedded Processors & Controllers

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Core = 8051 Data Bus Width = 8 bit

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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	Number of I/Os	Data Bus Width	ADC Resolution
8-bit Microcontrollers - MCU Single Cycle 8051 4K ISP FL AT89LP51-20JU Microchip Technology 1: £2.60 404In Stock	Mfr. Part No. AT89LP51-20JU Mouser Part No 556-AT89LP51-20JU	Microchip Technology	8-bit Microcontrollers - MCU Single Cycle 8051 4K ISP FL Learn More about Microchip Technology atmelat89lp52	Datasheet	404In Stock	£2.60 £2.44 £2.43	Min.: 1 Mult.: 1	SMD/SMT	PLCC-44	8051	36 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 8-bit MCU C8051F385-GM Silicon Labs 1: £5.06 257In Stock NRND	Mfr. Part No. C8051F385-GM Mouser Part No 634-C8051F385-GM NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 8-bit MCU Learn More about Silicon Labs silabs usb mcus	Datasheet	257In Stock	£5.06 £3.92 £3.61 £3.30 View £3.13 £3.05 £3.01 £2.98	Min.: 1 Mult.: 1	SMD/SMT	QFN-32	8051	25 I/O	8 bit
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 8-bit MCU C8051F411-GM Silicon Labs 1: £10.14 2,585In Stock NRND	Mfr. Part No. C8051F411-GM Mouser Part No 634-C8051F411-GM NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 8-bit MCU	Datasheet	2,585In Stock	£10.14 £8.33 £7.60 £7.18 View £7.15 £6.78 Quote	Min.: 1 Mult.: 1	SMD/SMT	QFN-28	8051	20 I/O	8 bit	12 bit
8-bit Microcontrollers - MCU 64kB Flash 2048B RAM 2.7V-5.5V AT89C51RD2-SLSUM Microchip Technology 1: £6.77 2,226In Stock 4,374Expected 08/12/2026	Mfr. Part No. AT89C51RD2-SLSUM Mouser Part No 556-A89C51RD2SLSUM	Microchip Technology	8-bit Microcontrollers - MCU 64kB Flash 2048B RAM 2.7V-5.5V Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	2,226In Stock 4,374Expected 08/12/2026	£6.77 £6.21 £5.62	Min.: 1 Mult.: 1	SMD/SMT	PLCC-44	8051	32 I/O	8 bit
8-bit Microcontrollers - MCU 8kB Flash 256B RAM 33MHz 4.0V-5.5V AT89S52-24PU Microchip Technology 1: £2.76 8,224In Stock	Mfr. Part No. AT89S52-24PU Mouser Part No 556-A89S52-24PU	Microchip Technology	8-bit Microcontrollers - MCU 8kB Flash 256B RAM 33MHz 4.0V-5.5V	Datasheet	8,224In Stock	£2.76 £2.54 £2.30	Min.: 1 Mult.: 1	Through Hole	PDIP-40	8051	32 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU 12kB Flash 256B RAM 2.7V-5.5V AT89S8253-24JU Microchip Technology 1: £3.54 3,093In Stock	Mfr. Part No. AT89S8253-24JU Mouser Part No 556-A89S8253-24JU	Microchip Technology	8-bit Microcontrollers - MCU 12kB Flash 256B RAM 2.7V-5.5V	Datasheet	3,093In Stock	£3.54 £3.25	Min.: 1 Mult.: 1	SMD/SMT	PLCC-44	8051	32 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU CAN TQFP44 TRAY I. Bootloader UART GREEN AT89C51CC01UAT-RLTUM Microchip Technology 1: £6.81 2,892In Stock	Mfr. Part No. AT89C51CC01UAT-RLTUM Mouser Part No 556-AT89C51CC01UATUM	Microchip Technology	8-bit Microcontrollers - MCU CAN TQFP44 TRAY I. Bootloader UART GREEN Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	2,892In Stock	£6.81 £6.24 £5.66	Min.: 1 Mult.: 1	SMD/SMT	TQFP-44	8051	34 I/O	8 bit	10 bit
8-bit Microcontrollers - MCU CAN C51 64KFLASH TQFP44 UARBOOT GREEN AT89C51CC03UAT-RLTUM Microchip Technology 1: £8.28 2,193In Stock	Mfr. Part No. AT89C51CC03UAT-RLTUM Mouser Part No 556-AT89C51CC03UATUM	Microchip Technology	8-bit Microcontrollers - MCU CAN C51 64KFLASH TQFP44 UARBOOT GREEN Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	2,193In Stock	£8.28 £7.59 £6.88	Min.: 1 Mult.: 1	SMD/SMT	TQFP-44	8051	36 I/O	8 bit	10 bit
8-bit Microcontrollers - MCU C51ID2 64kF 32KHz TQFP44 3-5.5V I. GREEN AT89C51ID2T-RLTUM Microchip Technology 1: £9.07 1,587In Stock	Mfr. Part No. AT89C51ID2T-RLTUM Mouser Part No 556-AT89C51ID2TLTUM	Microchip Technology	8-bit Microcontrollers - MCU C51ID2 64kF 32KHz TQFP44 3-5.5V I. GREEN Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	1,587In Stock	£9.07 £8.31 £7.53	Min.: 1 Mult.: 1	SMD/SMT	TQFP-44	8051	34 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU PSoC 32KB FLASH 1.7-5.5V 25 I/O CY8C3245LTI-139T Infineon Technologies 1: £8.21 2,655In Stock	Mfr. Part No. CY8C3245LTI-139T Mouser Part No 727-CY8C3245LTI-139T	Infineon Technologies	8-bit Microcontrollers - MCU PSoC 32KB FLASH 1.7-5.5V 25 I/O Learn More about Infineon Technologies cypress psoc	Datasheet	2,655In Stock	Cut Tape £8.21 £6.35 £6.05 £5.26 View Reel £4.59 £5.01 £4.59 £4.59 Quote	Min.: 1 Mult.: 1 : 2,000	SMD/SMT	QFN-48	8051		8 bit
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	31 I/O	8 bit	12 bit
8-bit Microcontrollers - MCU MCU with 2KB SRAM and 32Kx16 ECC E-Flash, QFN-24 (4mm x 4mm) IS31CS8974A-QFLS2-TR Lumissil 1: £1.56 2,500In Stock New Product	Mfr. Part No. IS31CS8974A-QFLS2-TR Mouser Part No 870-31CS8974AQFLS2TR New Product	Lumissil	8-bit Microcontrollers - MCU MCU with 2KB SRAM and 32Kx16 ECC E-Flash, QFN-24 (4mm x 4mm) Learn More about Lumissil is3xcs8974 mcus		2,500In Stock	Cut Tape £1.56 £0.995 £0.89 £0.732 Reel £0.464 View £0.639 £0.605 £0.509 £0.459	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	WQFN-24	8051	20 I/O	8 bit
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 8-bit MCU C8051F340-GQ Silicon Labs 1: £19.06 1,841In Stock NRND	Mfr. Part No. C8051F340-GQ Mouser Part No 634-C8051F340-GQ NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 8-bit MCU	Datasheet	1,841In Stock	£19.06 £15.24 £14.28 £13.23 View £12.74 £12.43	Min.: 1 Mult.: 1	SMD/SMT	TQFP-48	8051	40 I/O	8 bit	10 bit
8-bit Microcontrollers - MCU C51AC2 32kF ADC EEP TQFP44 ind 5V GREEN AT89C51AC2T-RLTUM Microchip Technology 1: £7.37 2,912In Stock	Mfr. Part No. AT89C51AC2T-RLTUM Mouser Part No 556-AT89C51AC2TLTUM	Microchip Technology	8-bit Microcontrollers - MCU C51AC2 32kF ADC EEP TQFP44 ind 5V GREEN Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	2,912In Stock	£7.37 £6.76 £6.12	Min.: 1 Mult.: 1	SMD/SMT	TQFP-44	8051	34 I/O	8 bit	10 bit
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 8-bit MCU C8051F411-GMR Silicon Labs 1: £10.55 1,837In Stock	Mfr. Part No. C8051F411-GMR Mouser Part No 634-C8051F411-GMR	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 8-bit MCU	Datasheet	1,837In Stock	Cut Tape £10.55 £8.61 £7.89 £7.41 View Reel £6.57 £7.37 £7.10 £6.67 £6.57 Quote MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-28	8051	20 I/O	8 bit	12 bit
8-bit Microcontrollers - MCU 20 PINS UART 2K FLASH-24MHZ 4-5.5V AT89C2051-24SU Microchip Technology 1: £1.08 2,438In Stock	Mfr. Part No. AT89C2051-24SU Mouser Part No 556-A89C2051-24SU	Microchip Technology	8-bit Microcontrollers - MCU 20 PINS UART 2K FLASH-24MHZ 4-5.5V	Datasheet	2,438In Stock	£1.08 £0.995 £0.899	Min.: 1 Mult.: 1	SMD/SMT	SOIC-20	8051	15 I/O	8 bit	No ADC
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	15 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU C51 16K Flash ADC AT89C5115-SISUM Microchip Technology 1: £7.26 396In Stock	Mfr. Part No. AT89C5115-SISUM Mouser Part No 556-A89C5115SISUM	Microchip Technology	8-bit Microcontrollers - MCU C51 16K Flash ADC Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	396In Stock	£7.26 £6.65 £6.01	Min.: 1 Mult.: 1	SMD/SMT	PLCC-28	8051	20 I/O	8 bit	10 bit
8-bit Microcontrollers - MCU 16K Flash ADC AT89C5115-TISUM Microchip Technology 1: £6.91 419In Stock	Mfr. Part No. AT89C5115-TISUM Mouser Part No 556-A89C5115TISUM	Microchip Technology	8-bit Microcontrollers - MCU 16K Flash ADC Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	419In Stock	£6.91 £6.33 £5.73	Min.: 1 Mult.: 1	SMD/SMT	SOIC-28	8051	20 I/O	8 bit	10 bit
8-bit Microcontrollers - MCU C5130A 16K Flash USB 5V AT89C5130A-RDTUM Microchip Technology 1: £6.89 166In Stock	Mfr. Part No. AT89C5130A-RDTUM Mouser Part No 556-A89C5130ARDTUM	Microchip Technology	8-bit Microcontrollers - MCU C5130A 16K Flash USB 5V Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	166In Stock	£6.89 £6.32	Min.: 1 Mult.: 1	SMD/SMT	VQFP-64	8051	34 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU C51AC3 64K FLASHADC EEP 5V AT89C51AC3-SLSUM Microchip Technology 1: £8.05 267In Stock	Mfr. Part No. AT89C51AC3-SLSUM Mouser Part No 556-A89C51AC3SLSUM	Microchip Technology	8-bit Microcontrollers - MCU C51AC3 64K FLASHADC EEP 5V Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	267In Stock	£8.05 £7.39 £6.69	Min.: 1 Mult.: 1	SMD/SMT	PLCC-44	8051	36 I/O	8 bit	10 bit
8-bit Microcontrollers - MCU CAN/C51 Boot CAN AT89C51CC02CA-RATUM Microchip Technology 1: £6.14 495In Stock	Mfr. Part No. AT89C51CC02CA-RATUM Mouser Part No 556-A89C51C02CARATUM	Microchip Technology	8-bit Microcontrollers - MCU CAN/C51 Boot CAN Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	495In Stock	£6.14 £5.63 £5.12	Min.: 1 Mult.: 1	SMD/SMT	VQFP-32	8051	20 I/O	8 bit	10 bit
8-bit Microcontrollers - MCU CAN C51 64K FLASH UAR BOOT AT89C51CC03UA-RDTUM Microchip Technology 1: £8.04 300In Stock	Mfr. Part No. AT89C51CC03UA-RDTUM Mouser Part No 556-A89C51C03UARDTUM	Microchip Technology	8-bit Microcontrollers - MCU CAN C51 64K FLASH UAR BOOT Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	300In Stock	£8.04 £7.38 £6.67	Min.: 1 Mult.: 1	SMD/SMT	VQFP-64	8051	36 I/O	8 bit	10 bit
8-bit Microcontrollers - MCU 64kB Flash 2048B RAM 2.7V-5.5V AT89C51ED2-SLSUM Microchip Technology 1: £7.74 930In Stock	Mfr. Part No. AT89C51ED2-SLSUM Mouser Part No 556-A89C51ED2SLSUM	Microchip Technology	8-bit Microcontrollers - MCU 64kB Flash 2048B RAM 2.7V-5.5V Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	930In Stock	£7.74 £7.10 £6.43	Min.: 1 Mult.: 1	SMD/SMT	PLCC-44	8051	34 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU C51ED2 64K FLASH 3-5.5V Ind AT89C51ED2-SMSUM Microchip Technology 1: £8.23 727In Stock	Mfr. Part No. AT89C51ED2-SMSUM Mouser Part No 556-A89C51ED2SMSUM	Microchip Technology	8-bit Microcontrollers - MCU C51ED2 64K FLASH 3-5.5V Ind Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	727In Stock	£8.23 £7.53 £6.84	Min.: 1 Mult.: 1	SMD/SMT	PLCC-68	8051	48 I/O	8 bit	No ADC