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8051 Core 8-bit Microcontrollers - MCU

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (JPY) 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 32K FLASH 4.0 TO 5.5V AT89C51RC-24PU Microchip Technology 1: ¥858.7 396In Stock 690Expected 10/1/2026	Mfr. Part # AT89C51RC-24PU Mouser Part # 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	396In Stock 690Expected 10/1/2026	¥858.7 ¥789 ¥777.3	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: ¥1,564.7 303In Stock	Mfr. Part # AT89C51RC2-3CSUM Mouser Part # 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	303In Stock	¥1,564.7 ¥1,436.8 ¥1,300.6	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: ¥1,531.4 428In Stock	Mfr. Part # AT89C51RD2-SLRUM Mouser Part # 556-A89C51RD2SLRUM	Microchip Technology	8-bit Microcontrollers - MCU C51RD2 64K FLASH 3-5.5V Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	428In Stock	Cut Tape ¥1,531.4 ¥1,489.9 Reel ¥1,272.3	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 64kB Flash 2048B RAM 2.7V-5.5V AT89C51RD2-SLSUM Microchip Technology 1: ¥1,496.6 1,423In Stock 2,538Expected 11/23/2026	Mfr. Part # AT89C51RD2-SLSUM Mouser Part # 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	1,423In Stock 2,538Expected 11/23/2026	¥1,496.6 ¥1,373.6 ¥1,244.1	Min.: 1 Mult.: 1	8051	64 kB	2 kB	PLCC-44	60 MHz		32 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	89C	Tube
8-bit Microcontrollers - MCU SINGLE CYCLE 4K FLASH-20MHZ 2.4-5.5V AT89LP4052-20SU Microchip Technology 1: ¥408.6 935In Stock	Mfr. Part # AT89LP4052-20SU Mouser Part # 556-A89LP4052-20SU	Microchip Technology	8-bit Microcontrollers - MCU SINGLE CYCLE 4K FLASH-20MHZ 2.4-5.5V	Datasheet	935In Stock	¥408.6 ¥373.7 ¥337.2	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: ¥631.2 1,098In Stock	Mfr. Part # AT89LS52-16JU Mouser Part # 556-A89LS52-16JU	Microchip Technology	8-bit Microcontrollers - MCU 8kB Flash 256B RAM 33MHz 2.7V-4.0V	Datasheet	1,098In Stock	¥631.2 ¥578 ¥573	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: ¥551.5 1,609In Stock 1,510Expected 9/30/2026	Mfr. Part # AT89S51-24PU Mouser Part # 556-A89S51-24PU	Microchip Technology	8-bit Microcontrollers - MCU 4kB Flash 128B RAM 33MHz 4.0V-5.5V	Datasheet	1,609In Stock 1,510Expected 9/30/2026	¥551.5 ¥506.6 ¥458.4	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 AT89S8253-24PU Microchip Technology 1: ¥739.1 688In Stock	Mfr. Part # AT89S8253-24PU Mouser Part # 556-A89S8253-24PU	Microchip Technology	8-bit Microcontrollers - MCU 12kB Flash 256B RAM 2.7V-5.5V	Datasheet	688In Stock	¥739.1 ¥679.3 ¥671	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: ¥765.7 660In Stock	Mfr. Part # AT80C51RD2-SLRUM Mouser Part # 556-AT80C51RD2-SLRUM	Microchip Technology	8-bit Microcontrollers - MCU MCU 8-Bit HI Perform ROMless 3-5V	Datasheet	660In Stock	Cut Tape ¥765.7 Reel ¥641.1 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: ¥681 424In Stock	Mfr. Part # AT80C51RD2-SLSUM Mouser Part # 556-AT80C51RD2-SLSUM	Microchip Technology	8-bit Microcontrollers - MCU MCU 8-Bit HI Perform ROMless 3-5V	Datasheet	424In Stock	¥681 ¥627.9 ¥616.2	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: ¥1,699.2 316In Stock	Mfr. Part # AT89C51AC3T-RLTUM Mouser Part # 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	316In Stock	¥1,699.2 ¥1,556.4 ¥1,411.9	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 CAN TQFP44 TRAY I. Bootloader UART GREEN AT89C51CC01UAT-RLTUM Microchip Technology 1: ¥1,506.5 723In Stock 2,240Expected 9/30/2026	Mfr. Part # AT89C51CC01UAT-RLTUM Mouser Part # 556-AT89C51CC01UATUM	Microchip Technology	8-bit Microcontrollers - MCU CAN TQFP44 TRAY I. Bootloader UART GREEN Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	723In Stock 2,240Expected 9/30/2026	¥1,506.5 ¥1,380.3 ¥1,250.7	Min.: 1 Mult.: 1	8051	32 kB	1.25 kB	TQFP-44	40 MHz	10 bit	34 I/O	3 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C		Tray
8-bit Microcontrollers - MCU C51IC2 32Kf I2C 32KHz TQFP44 I. 5V GREEN AT89C51IC2T-RLTUM Microchip Technology 1: ¥1,390.3 191In Stock	Mfr. Part # AT89C51IC2T-RLTUM Mouser Part # 556-AT89C51IC2TLTUM	Microchip Technology	8-bit Microcontrollers - MCU C51IC2 32Kf I2C 32KHz TQFP44 I. 5V GREEN Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	191In Stock	¥1,390.3 ¥1,274 ¥1,156.1	Min.: 1 Mult.: 1	8051	32 kB	1.25 kB	TQFP-44	60 MHz	No ADC	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 ind 3V GREEN AT89C51RB2T-RLRUL Microchip Technology 1: ¥1,290.6 1,000In Stock	Mfr. Part # AT89C51RB2T-RLRUL Mouser Part # 556-AT89C51RB2TLRUL	Microchip Technology	8-bit Microcontrollers - MCU C51RB2 FLASH 16k TQFP44 ind 3V GREEN Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	1,000In Stock	Cut Tape ¥1,290.6 ¥1,259 Reel ¥1,071.3	Min.: 1 Mult.: 1 : 2,000	8051	16 kB	1.25 kB	TQFP-44	60 MHz	No ADC	32 I/O	2.7 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C		Reel, Cut Tape
8-bit Microcontrollers - MCU C51RB2 FLASH 16k TQFP44 COM 5V GREEN AT89C51RB2T-RLTUM Microchip Technology 1: ¥1,189.3 330In Stock	Mfr. Part # AT89C51RB2T-RLTUM Mouser Part # 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	¥1,189.3 ¥1,089.6 ¥986.6	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: ¥1,360.4 864In Stock	Mfr. Part # AT89C51RC2T-RLTUM Mouser Part # 556-AT89C51RC2TLTUM	Microchip Technology	8-bit Microcontrollers - MCU C51RC2 FLASH 32k TQFP44 Com 5V GREEN Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	864In Stock	¥1,360.4 ¥1,245.8 ¥1,127.8	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: ¥1,458.4 407In Stock	Mfr. Part # AT89C51RD2T-RLTUM Mouser Part # 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	407In Stock	¥1,458.4 ¥1,338.8 ¥1,212.5	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 24MHZ, PLCC, IND TEMP, GREEN, 5V AT89C55WD-24JU Microchip Technology 1: ¥774 399In Stock	Mfr. Part # AT89C55WD-24JU Mouser Part # 556-AT89C55WD-24JU	Microchip Technology	8-bit Microcontrollers - MCU 24MHZ, PLCC, IND TEMP, GREEN, 5V	Datasheet	399In Stock	¥774 ¥712.6 ¥704.3	Min.: 1 Mult.: 1	8051	20 kB	256 B	PLCC-44	24 MHz	No ADC	32 I/O	4 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	AT89C55WD	Tube
8-bit Microcontrollers - MCU 20K FLASH - 24MHZ IND TEMP 5V AT89C55WD-24PU Microchip Technology 1: ¥855.4 864In Stock 900Expected 10/2/2026	Mfr. Part # AT89C55WD-24PU Mouser Part # 556-AT89C55WD-24PU	Microchip Technology	8-bit Microcontrollers - MCU 20K FLASH - 24MHZ IND TEMP 5V	Datasheet	864In Stock 900Expected 10/2/2026	¥855.4 ¥785.7 ¥775.7	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: ¥669.4 738In Stock	Mfr. Part # AT89LP51RB2-20JU Mouser Part # 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	738In Stock	¥669.4 ¥614.6 ¥556.4	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
8-bit Microcontrollers - MCU Single-Cycle 805132K ISP Flash,2.4-5.5V AT89LP51RC2-20JU Microchip Technology 1: ¥744.1 530In Stock	Mfr. Part # AT89LP51RC2-20JU Mouser Part # 556-AT89LP51RC2-20JU	Microchip Technology	8-bit Microcontrollers - MCU Single-Cycle 805132K ISP Flash,2.4-5.5V Learn More about Microchip Technology atmelat89lp52	Datasheet	530In Stock	¥744.1 ¥681 ¥616.2	Min.: 1 Mult.: 1	8051	32 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
8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V AT89LP51RD2-20JU Microchip Technology 1: ¥988.3 278In Stock	Mfr. Part # AT89LP51RD2-20JU Mouser Part # 556-AT89LP51RD2-20JU	Microchip Technology	8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V Learn More about Microchip Technology atmelat89lp52	Datasheet	278In Stock	¥988.3 ¥906.9 ¥893.6	Min.: 1 Mult.: 1	8051	64 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
8-bit Microcontrollers - MCU Single-Cycle 8051 8K ISP Flash MCU AT89LP52-20AU Microchip Technology 1: ¥285.7 2,784In Stock	Mfr. Part # AT89LP52-20AU Mouser Part # 556-AT89LP52-20AU	Microchip Technology	8-bit Microcontrollers - MCU Single-Cycle 8051 8K ISP Flash MCU Learn More about Microchip Technology atmelat89lp52	Datasheet	2,784In Stock	¥285.7 ¥259.1 ¥235.9	Min.: 1 Mult.: 1	8051	8 kB	256 B	TQFP-44	20 MHz	No ADC	36 I/O	2.4 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C		Tray
8-bit Microcontrollers - MCU 24 MHZ, TQFP44, IND TEMP, GREEN AT89S52-24AUR Microchip Technology 1: ¥402 2,888In Stock	Mfr. Part # AT89S52-24AUR Mouser Part # 556-AT89S52-24AUR	Microchip Technology	8-bit Microcontrollers - MCU 24 MHZ, TQFP44, IND TEMP, GREEN	Datasheet	2,888In Stock	Cut Tape ¥402 ¥387 Reel ¥332.2 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	8051	8 kB	256 B	TQFP-44	24 MHz	No ADC	32 I/O	4 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8kB Flash 256B RAM 33MHz 4.0V-5.5V AT89S52-24JU Microchip Technology 1: ¥629.5 979In Stock 2,403Expected 10/26/2026	Mfr. Part # AT89S52-24JU Mouser Part # 556-AT89S52-24JU	Microchip Technology	8-bit Microcontrollers - MCU 8kB Flash 256B RAM 33MHz 4.0V-5.5V	Datasheet	979In Stock 2,403Expected 10/26/2026	¥629.5 ¥576.4 ¥573	Min.: 1 Mult.: 1	8051	8 kB	256 B	PLCC-44	24 MHz	No ADC	32 I/O	4 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	89S	Tube