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8051 Core 8-bit Microcontrollers - MCU

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) 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 64KB Flash, 4KB SRAM, 2 CHs of SPI,1T/8051,LCD,TK ML56LD1AE Nuvoton 1: $2.33 105In Stock	Mfr. Part No. ML56LD1AE Mouser Part No 503-ML56LD1AE	Nuvoton	8-bit Microcontrollers - MCU 64KB Flash, 4KB SRAM, 2 CHs of SPI,1T/8051,LCD,TK Learn More about Nuvoton ml56 numicro mcus	Datasheet	105In Stock	$2.33 $1.95 $1.71 $1.62 View $1.50 $1.44 $1.38 $1.37 $1.33	Min.: 1 Mult.: 1	8051	64 kB	4 kB	LQFP-48	24 MHz	12 bit	42 I/O	1.8 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 105 C			Tray
8-bit Microcontrollers - MCU 16K Bytes Shared with LDROM MS51BA9AE Nuvoton 1: $0.70 534In Stock	Mfr. Part No. MS51BA9AE Mouser Part No 503-MS51BA9AE	Nuvoton	8-bit Microcontrollers - MCU 16K Bytes Shared with LDROM Learn More about Nuvoton ms51 industrial mcus	Datasheet	534In Stock	$0.70 $0.602 $0.511 $0.481 View $0.436 $0.412 $0.402	Min.: 1 Mult.: 1	8051	8 kB	1 kB	MSOP-10	24 MHz	12 bit	8 I/O	2.4 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 105 C			Tube
8-bit Microcontrollers - MCU 32K Bytes Shared with LDROM MS51FC0AE Nuvoton 1: $0.861 744In Stock	Mfr. Part No. MS51FC0AE Mouser Part No 503-MS51FC0AE	Nuvoton	8-bit Microcontrollers - MCU 32K Bytes Shared with LDROM Learn More about Nuvoton ms51 industrial mcus	Datasheet	744In Stock	$0.861 $0.737 $0.627 $0.592 View $0.537 $0.523 $0.491 $0.48	Min.: 1 Mult.: 1	8051	32 kB	2 kB	TSSOP-20	24 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 32K Bytes Shared with LDROM MS51PC0AE Nuvoton 1: $1.26 83In Stock 1,500Expected 2027/07/19	Mfr. Part No. MS51PC0AE Mouser Part No 503-MS51PC0AE	Nuvoton	8-bit Microcontrollers - MCU 32K Bytes Shared with LDROM Learn More about Nuvoton ms51 industrial mcus	Datasheet	83In Stock 1,500Expected 2027/07/19	$1.26 $1.08 $0.94 $0.889 View $0.826 $0.785 $0.73 $0.691	Min.: 1 Mult.: 1	8051	32 kB	2 kB	LQFP-32	24 MHz	12 bit	30 I/O	2.4 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 105 C			Tray
8-bit Microcontrollers - MCU 32K Bytes Shared with LDROM MS51TC0AE Nuvoton 1: $0.99 975In Stock	Mfr. Part No. MS51TC0AE Mouser Part No 503-MS51TC0AE	Nuvoton	8-bit Microcontrollers - MCU 32K Bytes Shared with LDROM Learn More about Nuvoton ms51 industrial mcus	Datasheet	975In Stock	$0.99 $0.847 $0.744 $0.704 View $0.622 $0.592 $0.591 $0.57 $0.564	Min.: 1 Mult.: 1	8051	32 kB	2 kB	QFN-33	24 MHz	12 bit	30 I/O	2.4 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 105 C			Tray
8-bit Microcontrollers - MCU 16K Bytes Shared with LDROM 0.4mm Pitch width MS51XB9AE Nuvoton 1: $0.65 627In Stock	Mfr. Part No. MS51XB9AE Mouser Part No 503-MS51XB9AE	Nuvoton	8-bit Microcontrollers - MCU 16K Bytes Shared with LDROM 0.4mm Pitch width Learn More about Nuvoton ms51 industrial mcus	Datasheet	627In Stock	$0.65 $0.557 $0.491 $0.464 View $0.408 $0.387 $0.366 $0.356	Min.: 1 Mult.: 1	8051	16 kB	1 kB	QFN-20	24 MHz	12 bit	18 I/O	2.4 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 105 C			Tray
8-bit Microcontrollers - MCU Low Pin Count 8051 Series; 2.4V to 5.5V; -40 to 85 N76E003AT20 Nuvoton 1: $0.83 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	$0.83 $0.711 $0.606 $0.571 View $0.518 $0.505 $0.486 $0.481	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 2kB Flash 128B RAM 24MHz 2.7V-6.0V AT89C2051-24PU Microchip Technology 1: $2.08 674In Stock 576Expected 2026/11/10	Mfr. Part No. AT89C2051-24PU Mouser Part No 556-A89C2051-24PU	Microchip Technology	8-bit Microcontrollers - MCU 2kB Flash 128B RAM 24MHz 2.7V-6.0V	Datasheet	674In Stock 576Expected 2026/11/10	$2.08 $1.91 $1.72	Min.: 1 Mult.: 1	8051	2 kB	128 B	PDIP-20	24 MHz	No ADC	15 I/O	4 V	6 V	Through Hole	8 bit	- 40 C	+ 85 C	89C		Tube
8-bit Microcontrollers - MCU C51AC2 32K FLASHADC EEP 5V AT89C51AC2-SLSUM Microchip Technology 1: $10.32 101In Stock	Mfr. Part No. AT89C51AC2-SLSUM Mouser Part No 556-A89C51AC2SLSUM	Microchip Technology	8-bit Microcontrollers - MCU C51AC2 32K FLASHADC EEP 5V Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	101In Stock	$10.32 $9.46 $8.56	Min.: 1 Mult.: 1	8051	32 kB	1.25 kB	PLCC-44	40 MHz	10 bit	34 I/O	3 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	89C		Tube
8-bit Microcontrollers - MCU LO-VLTG 8K ISP FLASH -16MHZ 2.7-5.5V AT89LS52-16AU Microchip Technology 1: $2.29 176In Stock	Mfr. Part No. AT89LS52-16AU Mouser Part No 556-A89LS52-16AU	Microchip Technology	8-bit Microcontrollers - MCU LO-VLTG 8K ISP FLASH -16MHZ 2.7-5.5V	Datasheet	176In Stock	$2.29 $2.09 $1.91	Min.: 1 Mult.: 1	8051	8 kB	256 B	TQFP-44	16 MHz	No ADC	32 I/O	2.7 V	4 V	SMD/SMT	8 bit	- 40 C	+ 85 C	89LS		Tray
8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V AT89LP51ED2-20MU Microchip Technology 1: $5.64 30In Stock	Mfr. Part No. AT89LP51ED2-20MU Mouser Part No 556-AT89LP51ED2-20MU	Microchip Technology	8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V Learn More about Microchip Technology atmelat89lp52	Datasheet	30In Stock	$5.64 $5.15 $4.68	Min.: 1 Mult.: 1	8051	64 kB	256 B	VQFN-44	20 MHz	10 bit	36 I/O	2.4 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C			Tray
8-bit Microcontrollers - MCU Single-Cycle 805124K ISP Flash,2.4-5.5V AT89LP51RB2-20AAU Microchip Technology 1: $3.84 196In Stock	Mfr. Part No. AT89LP51RB2-20AAU Mouser Part No 556-AT89LP51RB220AAU	Microchip Technology	8-bit Microcontrollers - MCU Single-Cycle 805124K ISP Flash,2.4-5.5V Learn More about Microchip Technology atmelat89lp52	Datasheet	196In Stock	$3.84 $3.52 $3.21	Min.: 1 Mult.: 1	8051	24 kB	256 B	LQFP-44	20 MHz	10 bit	40 I/O	2.4 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C			Tray
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB LFO 8-bit MCU C8051F338-GM Silicon Labs 1: $11.65 57In Stock NRND	Mfr. Part No. C8051F338-GM Mouser Part No 634-C8051F338-GM NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 16 kB LFO 8-bit MCU	Datasheet	57In Stock	$11.65 $9.12 $8.49 $7.80 View $7.72 $7.27 $7.11 $6.73	Min.: 1 Mult.: 1	8051	16 kB	768 B	QFN-24	25 MHz	10 bit	21 I/O	2.7 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F338		Tube
8-bit Microcontrollers - MCU CTRL Boodloader UART AT89C51CC02UA-TISUM Microchip Technology 1: $8.18 54In Stock	Mfr. Part No. AT89C51CC02UA-TISUM Mouser Part No 556-A89C51C02UATISUM	Microchip Technology	8-bit Microcontrollers - MCU CTRL Boodloader UART Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	54In Stock	$8.18 $7.50 $6.82	Min.: 1 Mult.: 1	8051	16 kB	512 B	SOIC-28	40 MHz	10 bit	20 I/O	3 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	89C		Tube
8-bit Microcontrollers - MCU SINGLE CYCLE 2K FLASH-20MHZ 2.4-5.5V AT89LP2052-20XU Microchip Technology 1: $2.77 8In Stock	Mfr. Part No. AT89LP2052-20XU Mouser Part No 556-A89LP2052-20XU	Microchip Technology	8-bit Microcontrollers - MCU SINGLE CYCLE 2K FLASH-20MHZ 2.4-5.5V	Datasheet	8In Stock	$2.77 $2.55 $2.54	Min.: 1 Mult.: 1	8051	2 kB	256 B	TSSOP-20	20 MHz		15 I/O	2.4 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	89LP		Tube
8-bit Microcontrollers - MCU 8KB,24ADC,28Pin MCU C8051F351-GMR Silicon Labs 1: $16.04 97In Stock	Mfr. Part No. C8051F351-GMR Mouser Part No 634-C8051F351-GMR	Silicon Labs	8-bit Microcontrollers - MCU 8KB,24ADC,28Pin MCU	Datasheet	97In Stock	Cut Tape $16.04 $12.55 $11.69 $10.73 View Reel $9.26 $10.63 $10.00 $9.78 $9.26	Min.: 1 Mult.: 1 : 2,500	8051	8 kB	768 B	QFN-28	50 MHz	24 bit	17 I/O	2.7 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F351		Reel, Cut Tape
8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V CY8C3246LTI-149 Infineon Technologies 1: $14.36 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	$14.36 $11.15 $10.06 $9.48 View $9.04 $8.77 $8.36 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 PSoC 32KB FLASH 1.7-5.5V 38 I/O CY8C3246LTI-149T Infineon Technologies 1: $14.54 23In Stock	Mfr. Part No. CY8C3246LTI-149T Mouser Part No 727-CY8C3246LTI-149T	Infineon Technologies	8-bit Microcontrollers - MCU PSoC 32KB FLASH 1.7-5.5V 38 I/O Learn More about Infineon Technologies cypress psoc	Datasheet	23In Stock	Cut Tape $14.54 $11.04 $10.58 $9.33 View Reel $8.35 $8.87 $8.57 $8.36 $8.35 Quote	Min.: 1 Mult.: 1 : 2,000	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		Reel, Cut Tape
8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V CY8C3446LTI-085 Infineon Technologies 1: $16.15 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	$16.15 $12.64 $11.39 $10.76 View $10.27 $9.97 $9.80 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 64 kB 8-bit MCU C8051F021-GQ Silicon Labs 1: $44.04 28In Stock End of Life	Mfr. Part No. C8051F021-GQ Mouser Part No 634-C8051F021-GQ End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 64 kB 8-bit MCU	Datasheet	28In Stock	$44.04 $36.41 $34.02 $32.62 View $31.35 Quote	Min.: 1 Mult.: 1	8051	64 kB	4.35 kB	TQFP-64	25 MHz	8 bit, 12 bit	32 I/O	2.7 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F021		Tray
8-bit Microcontrollers - MCU 64KB,10ADC,100Pin MCU C8051F022-GQ Silicon Labs 1: $36.83 6In Stock End of Life	Mfr. Part No. C8051F022-GQ Mouser Part No 634-C8051F022-GQ End of Life	Silicon Labs	8-bit Microcontrollers - MCU 64KB,10ADC,100Pin MCU	Datasheet	6In Stock	$36.83 $29.83 $28.07 $26.91 $25.23	Min.: 1 Mult.: 1	8051	64 kB	4.35 kB	TQFP-100	25 MHz	8 bit, 10 bit	64 I/O	2.7 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F022		Tray
8-bit Microcontrollers - MCU 100MIPS,128KB,12ADC,100Pin MCU C8051F120-GQ Silicon Labs 1: $55.27 5In Stock 859Expected 2027/09/24 End of Life	Mfr. Part No. C8051F120-GQ Mouser Part No 634-C8051F120-GQ End of Life	Silicon Labs	8-bit Microcontrollers - MCU 100MIPS,128KB,12ADC,100Pin MCU	Datasheet	5In Stock 859Expected 2027/09/24	$55.27 $45.16 $42.62 $41.45 $38.53	Min.: 1 Mult.: 1	8051	128 kB	8.25 kB	TQFP-100	100 MHz	8 bit, 12 bit	64 I/O	3 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F120		Tray
8-bit Microcontrollers - MCU 100MIPS,128KB,12ADC,100Pin MCU C8051F120-GQR Silicon Labs 1: $55.27 5In Stock 250On Order End of Life	Mfr. Part No. C8051F120-GQR Mouser Part No 634-C8051F120-GQR End of Life	Silicon Labs	8-bit Microcontrollers - MCU 100MIPS,128KB,12ADC,100Pin MCU	Datasheet	5In Stock 250On Order	Cut Tape $55.27 $45.16 $42.62 $41.45 Reel $38.53	Min.: 1 Mult.: 1 : 250	8051	128 kB	8.25 kB	TQFP-100	100 MHz	8 bit, 12 bit	64 I/O	3 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	C8051F120		Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 5 V 8-bit MCU C8051F503-IM Silicon Labs 1: $11.01 44In Stock End of Life	Mfr. Part No. C8051F503-IM Mouser Part No 634-C8051F503-IM End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 5 V 8-bit MCU	Datasheet	44In Stock	$11.01 $8.59 $7.99 $7.33 View $6.97 $6.83 $6.47	Min.: 1 Mult.: 1	8051	64 kB	4.25 kB	QFN-32	50 MHz	12 bit	25 I/O	1.8 V	5.25 V	SMD/SMT	8 bit	- 40 C	+ 125 C	C8051F503	AEC-Q100	Tube
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 5 V 8-bit MCU C8051F563-IQ Silicon Labs 1: $9.54 175In Stock End of Life	Mfr. Part No. C8051F563-IQ Mouser Part No 634-C8051F563-IQ End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 5 V 8-bit MCU	Datasheet	175In Stock	$9.54 $7.39 $6.84 $6.26 View $5.97 $5.80 $5.65 $5.35	Min.: 1 Mult.: 1	8051	32 kB	2.25 kB	QFP-32	50 MHz		25 I/O	1.8 V	5.25 V	SMD/SMT	8 bit	- 40 C	+ 125 C	C8051F563	AEC-Q100	Tray