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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	Packaging
8-bit Microcontrollers - MCU CAN/C51 Boot CAN AT89C51CC02CA-RATUM Microchip Technology 1: $8.17 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	$8.17 $7.50 $6.81	Min.: 1 Mult.: 1	8051	16 kB	512 B	VQFP-32	40 MHz	10 bit	20 I/O	3 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	89C	Tray
8-bit Microcontrollers - MCU CAN C51 64K FLASH UAR BOOT AT89C51CC03UA-RDTUM Microchip Technology 1: $10.71 405In 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	405In Stock	$10.71 $9.82 $8.88	Min.: 1 Mult.: 1	8051	64 kB	2 kB	VQFP-64	60 MHz	10 bit	36 I/O	3 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	89C	Tray
8-bit Microcontrollers - MCU 64kB Flash 2048B RAM 2.7V-5.5V AT89C51ED2-SLSUM Microchip Technology 1: $10.31 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	$10.31 $9.45 $8.56	Min.: 1 Mult.: 1	8051	64 kB	2 kB	PLCC-44	60 MHz	No ADC	34 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	89C	Tube
8-bit Microcontrollers - MCU C51ED2 64K FLASH 3-5.5V Ind AT89C51ED2-SMSUM Microchip Technology 1: $10.96 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	$10.96 $10.04 $9.10	Min.: 1 Mult.: 1	8051	64 kB	2 kB	PLCC-68	60 MHz	No ADC	48 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	89C	Tube
8-bit Microcontrollers - MCU C51IC2 32K FLASH I2C 32KHz 5V AT89C51IC2-SLSUM Microchip Technology 1: $8.81 377In Stock	Mfr. Part No. AT89C51IC2-SLSUM Mouser Part No 556-A89C51IC2SLSUM	Microchip Technology	8-bit Microcontrollers - MCU C51IC2 32K FLASH I2C 32KHz 5V Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	377In Stock	$8.81 $8.59	Min.: 1 Mult.: 1	8051	32 kB	1.25 kB	PLCC-44	60 MHz	No ADC	34 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	89C	Tube
8-bit Microcontrollers - MCU C51RB2 16K FLASH 5V COM AT89C51RB2-SLSUM Microchip Technology 1: $7.51 1,118In Stock 2,646Expected 06/11/2026	Mfr. Part No. AT89C51RB2-SLSUM Mouser Part No 556-A89C51RB2SLSUM	Microchip Technology	8-bit Microcontrollers - MCU C51RB2 16K FLASH 5V COM Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	1,118In Stock 2,646Expected 06/11/2026	$7.51 $6.89 $6.25	Min.: 1 Mult.: 1	8051	16 kB	1.25 kB	PLCC-44	60 MHz	No ADC	32 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	89C	Tube
8-bit Microcontrollers - MCU 32K FLASH 4.0 TO 5.5V - 24MHZ 5V AT89C51RC-24JU Microchip Technology 1: $4.66 699In Stock	Mfr. Part No. AT89C51RC-24JU Mouser Part No 556-A89C51RC-24JU	Microchip Technology	8-bit Microcontrollers - MCU 32K FLASH 4.0 TO 5.5V - 24MHZ 5V Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	699In Stock	$4.66 $4.29 $4.24	Min.: 1 Mult.: 1	8051	32 kB	512 B	PLCC-44	24 MHz	No ADC	32 I/O	4 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	89C	Tube
8-bit Microcontrollers - MCU 32K FLASH 4.0 TO 5.5V AT89C51RC-24PU Microchip Technology 1: $5.17 1,004In 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	1,004In Stock	$5.17 $4.75 $4.57	Min.: 1 Mult.: 1	8051	32 kB	512 B	PDIP-40	24 MHz	No ADC	32 I/O	4 V	5.5 V	Through Hole	8 bit	- 40 C	+ 85 C	89C	Tube
8-bit Microcontrollers - MCU 32kB Flash 1280B RAM 2.7V-5.5V AT89C51RC2-3CSUM Microchip Technology 1: $9.42 198In Stock 360Expected 21/12/2026	Mfr. Part No. AT89C51RC2-3CSUM Mouser Part No 556-A89C51RC2-3CSUM	Microchip Technology	8-bit Microcontrollers - MCU 32kB Flash 1280B RAM 2.7V-5.5V Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	198In Stock 360Expected 21/12/2026	$9.42 $8.65 $7.83	Min.: 1 Mult.: 1	8051	32 kB	1.25 kB	PDIP-40	60 MHz	No ADC	32 I/O	2.7 V	5.5 V	Through Hole	8 bit	- 40 C	+ 85 C	89C	Tube
8-bit Microcontrollers - MCU C51RD2 64K FLASH 3-5.5V AT89C51RD2-SLRUM Microchip Technology 1: $9.22 426In Stock	Mfr. Part No. AT89C51RD2-SLRUM Mouser Part No 556-A89C51RD2SLRUM	Microchip Technology	8-bit Microcontrollers - MCU C51RD2 64K FLASH 3-5.5V Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	426In Stock	Cut Tape $9.22 $8.97 Reel $7.66	Min.: 1 Mult.: 1 : 500	8051	64 kB	2 kB	PLCC-44	60 MHz		34 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C		Reel, Cut Tape
8-bit Microcontrollers - MCU SINGLE CYCLE 4K FLASH-20MHZ 2.4-5.5V AT89LP4052-20PU Microchip Technology 1: $2.69 1,225In Stock	Mfr. Part No. AT89LP4052-20PU Mouser Part No 556-A89LP4052-20PU	Microchip Technology	8-bit Microcontrollers - MCU SINGLE CYCLE 4K FLASH-20MHZ 2.4-5.5V	Datasheet	1,225In Stock	$2.69 $2.46 $2.44	Min.: 1 Mult.: 1	8051	4 kB	256 B	PDIP-20	20 MHz	No ADC	15 I/O	2.4 V	5.5 V	Through Hole	8 bit	- 40 C	+ 85 C	89LP	Tube
8-bit Microcontrollers - MCU SINGLE CYCLE 4K FLASH-20MHZ 2.4-5.5V AT89LP4052-20SU Microchip Technology 1: $2.46 905In Stock	Mfr. Part No. AT89LP4052-20SU Mouser Part No 556-A89LP4052-20SU	Microchip Technology	8-bit Microcontrollers - MCU SINGLE CYCLE 4K FLASH-20MHZ 2.4-5.5V	Datasheet	905In Stock	$2.46 $2.25 $2.03	Min.: 1 Mult.: 1	8051	4 kB	256 B	SOIC-20	20 MHz	No ADC	15 I/O	2.4 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	89LP	Tube
8-bit Microcontrollers - MCU 8kB Flash 256B RAM 33MHz 2.7V-4.0V AT89LS52-16JU Microchip Technology 1: $3.80 1,098In Stock	Mfr. Part No. AT89LS52-16JU Mouser Part No 556-A89LS52-16JU	Microchip Technology	8-bit Microcontrollers - MCU 8kB Flash 256B RAM 33MHz 2.7V-4.0V	Datasheet	1,098In Stock	$3.80 $3.48 $3.45	Min.: 1 Mult.: 1	8051	8 kB	256 B	PLCC-44	16 MHz	No ADC	32 I/O	2.7 V	4 V	SMD/SMT	8 bit	- 40 C	+ 85 C	89LS	Tube
8-bit Microcontrollers - MCU 4kB Flash 128B RAM 33MHz 4.0V-5.5V AT89S51-24PU Microchip Technology 1: $3.32 2,329In Stock	Mfr. Part No. AT89S51-24PU Mouser Part No 556-A89S51-24PU	Microchip Technology	8-bit Microcontrollers - MCU 4kB Flash 128B RAM 33MHz 4.0V-5.5V	Datasheet	2,329In Stock	$3.32 $3.05 $2.76	Min.: 1 Mult.: 1	8051	4 kB	128 B	PDIP-40	24 MHz	No ADC	32 I/O	4 V	5.5 V	Through Hole	8 bit	- 40 C	+ 85 C	89S	Tube
8-bit Microcontrollers - MCU 12kB Flash 256B RAM 2.7V-5.5V AT89S8253-24AU Microchip Technology 1: $2.70 4,442In Stock	Mfr. Part No. AT89S8253-24AU Mouser Part No 556-A89S8253-24AU	Microchip Technology	8-bit Microcontrollers - MCU 12kB Flash 256B RAM 2.7V-5.5V	Datasheet	4,442In Stock	$2.70 $2.49 $2.24	Min.: 1 Mult.: 1	8051	12 kB	256 B	TQFP-44	24 MHz	No ADC	32 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	89S	Tray
8-bit Microcontrollers - MCU 12kB Flash 256B RAM 2.7V-5.5V AT89S8253-24PU Microchip Technology 1: $4.45 672In Stock	Mfr. Part No. AT89S8253-24PU Mouser Part No 556-A89S8253-24PU	Microchip Technology	8-bit Microcontrollers - MCU 12kB Flash 256B RAM 2.7V-5.5V	Datasheet	672In Stock	$4.45 $4.09 $3.93	Min.: 1 Mult.: 1	8051	12 kB	256 B	PDIP-40	24 MHz	No ADC	32 I/O	2.7 V	5.5 V	Through Hole	8 bit	- 40 C	+ 85 C	89S	Tube
8-bit Microcontrollers - MCU MCU 8-Bit HI Perform ROMless 3-5V AT80C51RD2-SLRUM Microchip Technology 1: $4.61 637In Stock	Mfr. Part No. AT80C51RD2-SLRUM Mouser Part No 556-AT80C51RD2-SLRUM	Microchip Technology	8-bit Microcontrollers - MCU MCU 8-Bit HI Perform ROMless 3-5V	Datasheet	637In Stock	Cut Tape $4.61 Reel $3.86 MouseReel Available	Min.: 1 Mult.: 1 : 500	8051	1 kB	1.25 kB	PLCC-44	40 MHz	No ADC	32 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	80C	Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU MCU 8-Bit HI Perform ROMless 3-5V AT80C51RD2-SLSUM Microchip Technology 1: $4.10 424In Stock	Mfr. Part No. AT80C51RD2-SLSUM Mouser Part No 556-AT80C51RD2-SLSUM	Microchip Technology	8-bit Microcontrollers - MCU MCU 8-Bit HI Perform ROMless 3-5V	Datasheet	424In Stock	$4.10 $3.78 $3.71	Min.: 1 Mult.: 1	8051	1 kB	1.25 kB	PLCC-44	40 MHz	No ADC	32 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	80C	Tube
8-bit Microcontrollers - MCU C51AC3 64kF ADC EEP TQFP44 ind 5V GREEN AT89C51AC3T-RLTUM Microchip Technology 1: $10.23 296In Stock	Mfr. Part No. AT89C51AC3T-RLTUM Mouser Part No 556-AT89C51AC3TLTUM	Microchip Technology	8-bit Microcontrollers - MCU C51AC3 64kF ADC EEP TQFP44 ind 5V GREEN Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	296In Stock	$10.23 $9.37 $8.50	Min.: 1 Mult.: 1	8051	64 kB	128 B	TQFP-64	60 MHz	10 bit	36 I/O	3 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C		Tray
8-bit Microcontrollers - MCU C51ED2 64kF TQFP44 3-5.5V Ind GREEN AT89C51ED2T-RLTUM Microchip Technology 1: $9.81 1,073In Stock	Mfr. Part No. AT89C51ED2T-RLTUM Mouser Part No 556-AT89C51ED2TLTUM	Microchip Technology	8-bit Microcontrollers - MCU C51ED2 64kF TQFP44 3-5.5V Ind GREEN Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	1,073In Stock	$9.81 $9.00 $8.15	Min.: 1 Mult.: 1	8051	64 kB	2 kB	TQFP-44	60 MHz		34 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C		Tray
8-bit Microcontrollers - MCU C51RB2 FLASH 16k TQFP44 COM 5V GREEN AT89C51RB2T-RLTUM Microchip Technology 1: $7.16 330In Stock	Mfr. Part No. AT89C51RB2T-RLTUM Mouser Part No 556-AT89C51RB2TLTUM	Microchip Technology	8-bit Microcontrollers - MCU C51RB2 FLASH 16k TQFP44 COM 5V GREEN Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	330In Stock	$7.16 $6.56 $5.94	Min.: 1 Mult.: 1	8051	16 kB	1.25 kB	TQFP-44	60 MHz	No ADC	32 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C		Tray
8-bit Microcontrollers - MCU C51RC2 FLASH 32k TQFP44 Com 5V GREEN AT89C51RC2T-RLTUM Microchip Technology 1: $8.19 39In Stock	Mfr. Part No. AT89C51RC2T-RLTUM Mouser Part No 556-AT89C51RC2TLTUM	Microchip Technology	8-bit Microcontrollers - MCU C51RC2 FLASH 32k TQFP44 Com 5V GREEN Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	39In Stock	$8.19 $7.50 $6.79	Min.: 1 Mult.: 1	8051	32 kB	1.25 kB	TQFP-44	60 MHz	No ADC	32 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C		Tray
8-bit Microcontrollers - MCU C51RD2 64kF TQFP44 3-5.5V Ind. GREEN AT89C51RD2T-RLTUM Microchip Technology 1: $8.78 281In Stock	Mfr. Part No. AT89C51RD2T-RLTUM Mouser Part No 556-AT89C51RD2TLTUM	Microchip Technology	8-bit Microcontrollers - MCU C51RD2 64kF TQFP44 3-5.5V Ind. GREEN Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	281In Stock	$8.78 $8.06 $7.30	Min.: 1 Mult.: 1	8051	64 kB	2 kB	TQFP-44	60 MHz		34 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C		Tray
8-bit Microcontrollers - MCU 20K FLASH - 24MHZ IND TEMP 5V AT89C55WD-24PU Microchip Technology 1: $5.15 787In Stock 900Expected 30/10/2026	Mfr. Part No. AT89C55WD-24PU Mouser Part No 556-AT89C55WD-24PU	Microchip Technology	8-bit Microcontrollers - MCU 20K FLASH - 24MHZ IND TEMP 5V	Datasheet	787In Stock 900Expected 30/10/2026	$5.15 $4.73 $4.67	Min.: 1 Mult.: 1	8051	20 kB	256 B	PDIP-40	24 MHz	No ADC	32 I/O	4 V	5.5 V	Through Hole	8 bit	- 40 C	+ 85 C	AT89C55WD	Tube
8-bit Microcontrollers - MCU Single-Cycle 805124K ISP Flash,2.4-5.5V AT89LP51RB2-20JU Microchip Technology 1: $4.03 436In Stock	Mfr. Part No. AT89LP51RB2-20JU Mouser Part No 556-AT89LP51RB2-20JU	Microchip Technology	8-bit Microcontrollers - MCU Single-Cycle 805124K ISP Flash,2.4-5.5V Learn More about Microchip Technology atmelat89lp52	Datasheet	436In Stock	$4.03 $3.70 $3.35	Min.: 1 Mult.: 1	8051	24 kB	256 B	PLCC-44	20 MHz	10 bit	40 I/O	2.4 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C		Tube