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8051 Core Embedded Processors & Controllers

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Core = 8051

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (SGD) 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 C51IC2 32K FLASH I2C 32KHz 5V AT89C51IC2-SLSUM Microchip Technology 1: $11.98 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	$11.98 $11.68	Min.: 1 Mult.: 1	SMD/SMT	PLCC-44	8051	34 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU 64K FLASH 32KHz 3.5-5V Ind. AT89C51ID2-SLSUM Microchip Technology 1: $17.23 365In Stock	Mfr. Part No. AT89C51ID2-SLSUM Mouser Part No 556-A89C51ID2SLSUM	Microchip Technology	8-bit Microcontrollers - MCU 64K FLASH 32KHz 3.5-5V Ind. Learn More about Microchip Technology microchip at89c51 mcus	Datasheet	365In Stock	$17.23 $15.79 $14.31	Min.: 1 Mult.: 1	SMD/SMT	PLCC-44	8051	34 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU C51RB2 16K FLASH 5V COM AT89C51RB2-SLSUM Microchip Technology 1: $10.21 584In Stock 2,646Expected 6/11/2026	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	584In Stock 2,646Expected 6/11/2026	$10.21 $9.37 $8.50	Min.: 1 Mult.: 1	SMD/SMT	PLCC-44	8051	32 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU 32K FLASH 4.0 TO 5.5V - 24MHZ 5V AT89C51RC-24JU Microchip Technology 1: $6.34 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	$6.34 $5.83 $5.62	Min.: 1 Mult.: 1	SMD/SMT	PLCC-44	8051	32 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU 32K FLASH 4.0 TO 5.5V AT89C51RC-24PU Microchip Technology 1: $7.03 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	$7.03 $6.46 $6.22	Min.: 1 Mult.: 1	Through Hole	PDIP-40	8051	32 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU 32kB Flash 1280B RAM 2.7V-5.5V AT89C51RC2-3CSUM Microchip Technology 1: $12.81 201In Stock 360Expected 20/11/2026	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	201In Stock 360Expected 20/11/2026	$12.81 $11.76 $10.65	Min.: 1 Mult.: 1	Through Hole	PDIP-40	8051	32 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU C51RD2 64K FLASH 3-5.5V AT89C51RD2-SLRUM Microchip Technology 1: $12.54 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 $12.54 $12.20 Reel $10.42	Min.: 1 Mult.: 1 : 500	SMD/SMT	PLCC-44	8051	34 I/O	8 bit
8-bit Microcontrollers - MCU SINGLE CYCLE 4K FLASH-20MHZ 2.4-5.5V AT89LP4052-20PU Microchip Technology 1: $3.66 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	$3.66 $3.35 $3.32	Min.: 1 Mult.: 1	Through Hole	PDIP-20	8051	15 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU SINGLE CYCLE 4K FLASH-20MHZ 2.4-5.5V AT89LP4052-20SU Microchip Technology 1: $3.35 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	$3.35 $3.06 $2.76	Min.: 1 Mult.: 1	SMD/SMT	SOIC-20	8051	15 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU 8kB Flash 256B RAM 33MHz 2.7V-4.0V AT89LS52-16JU Microchip Technology 1: $5.17 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	$5.17 $4.73 $4.69	Min.: 1 Mult.: 1	SMD/SMT	PLCC-44	8051	32 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU 4kB Flash 128B RAM 33MHz 4.0V-5.5V AT89S51-24PU Microchip Technology 1: $4.52 2,229In 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	2,229In Stock	$4.52 $4.15 $3.75	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 AT89S8253-24AU Microchip Technology 1: $3.67 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	$3.67 $3.39 $3.05	Min.: 1 Mult.: 1	SMD/SMT	TQFP-44	8051	32 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU 12kB Flash 256B RAM 2.7V-5.5V AT89S8253-24PU Microchip Technology 1: $6.05 677In 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	677In Stock	$6.05 $5.56 $5.36	Min.: 1 Mult.: 1	Through Hole	PDIP-40	8051	32 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU MCU 8-Bit HI Perform ROMless 3-5V AT80C51RD2-SLRUM Microchip Technology 1: $6.27 634In 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	634In Stock	Cut Tape $6.27 $6.07 $6.00 $5.96 Reel $5.13 MouseReel Available	Min.: 1 Mult.: 1 : 500	SMD/SMT	PLCC-44	8051	32 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU MCU 8-Bit HI Perform ROMless 3-5V AT80C51RD2-SLSUM Microchip Technology 1: $5.58 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	$5.58 $5.14 $5.05	Min.: 1 Mult.: 1	SMD/SMT	PLCC-44	8051	32 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU C51AC3 64kF ADC EEP TQFP44 ind 5V GREEN AT89C51AC3T-RLTUM Microchip Technology 1: $13.91 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	$13.91 $12.74 $11.56	Min.: 1 Mult.: 1	SMD/SMT	TQFP-64	8051	36 I/O	8 bit	10 bit
8-bit Microcontrollers - MCU C51ED2 64kF TQFP44 3-5.5V Ind GREEN AT89C51ED2T-RLTUM Microchip Technology 1: $13.34 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	$13.34 $12.24 $11.08	Min.: 1 Mult.: 1	SMD/SMT	TQFP-44	8051	34 I/O	8 bit
8-bit Microcontrollers - MCU C51RB2 FLASH 16k TQFP44 COM 5V GREEN AT89C51RB2T-RLTUM Microchip Technology 1: $9.74 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	$9.74 $8.92 $8.08	Min.: 1 Mult.: 1	SMD/SMT	TQFP-44	8051	32 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU C51RD2 64kF TQFP44 3-5.5V Ind. GREEN AT89C51RD2T-RLTUM Microchip Technology 1: $11.94 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	$11.94 $10.96 $9.93	Min.: 1 Mult.: 1	SMD/SMT	TQFP-44	8051	34 I/O	8 bit
8-bit Microcontrollers - MCU 20K FLASH - 24MHZ IND TEMP 5V AT89C55WD-24PU Microchip Technology 1: $7.00 1,662In Stock	Mfr. Part No. AT89C55WD-24PU Mouser Part No 556-AT89C55WD-24PU	Microchip Technology	8-bit Microcontrollers - MCU 20K FLASH - 24MHZ IND TEMP 5V	Datasheet	1,662In Stock	$7.00 $6.43 $6.35	Min.: 1 Mult.: 1	Through Hole	PDIP-40	8051	32 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU Single-Cycle 805124K ISP Flash,2.4-5.5V AT89LP51RB2-20JU Microchip Technology 1: $5.48 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	$5.48 $5.03 $4.56	Min.: 1 Mult.: 1	SMD/SMT	PLCC-44	8051	40 I/O	8 bit	10 bit
8-bit Microcontrollers - MCU Single-Cycle 805132K ISP Flash,2.4-5.5V AT89LP51RC2-20JU Microchip Technology 1: $6.09 412In Stock	Mfr. Part No. AT89LP51RC2-20JU Mouser Part No 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	412In Stock	$6.09 $5.58 $5.05	Min.: 1 Mult.: 1	SMD/SMT	PLCC-44	8051	40 I/O	8 bit	10 bit
8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V AT89LP51RD2-20JU Microchip Technology 1: $8.09 278In Stock	Mfr. Part No. AT89LP51RD2-20JU Mouser Part No 556-AT89LP51RD2-20JU	Microchip Technology	8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V Learn More about Microchip Technology atmelat89lp52	Datasheet	278In Stock	$8.09 $7.43 $7.32	Min.: 1 Mult.: 1	SMD/SMT	PLCC-44	8051	40 I/O	8 bit	10 bit
8-bit Microcontrollers - MCU Single-Cycle 8051 8K ISP Flash MCU AT89LP52-20AU Microchip Technology 1: $2.34 2,754In Stock	Mfr. Part No. AT89LP52-20AU Mouser Part No 556-AT89LP52-20AU	Microchip Technology	8-bit Microcontrollers - MCU Single-Cycle 8051 8K ISP Flash MCU Learn More about Microchip Technology atmelat89lp52	Datasheet	2,754In Stock	$2.34 $2.12 $1.93	Min.: 1 Mult.: 1	SMD/SMT	TQFP-44	8051	36 I/O	8 bit	No ADC
8-bit Microcontrollers - MCU 24 MHZ, TQFP44, IND TEMP, GREEN AT89S52-24AUR Microchip Technology 1: $3.29 2,453In Stock	Mfr. Part No. AT89S52-24AUR Mouser Part No 556-AT89S52-24AUR	Microchip Technology	8-bit Microcontrollers - MCU 24 MHZ, TQFP44, IND TEMP, GREEN	Datasheet	2,453In Stock	Cut Tape $3.29 $3.17 Reel $2.72 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	SMD/SMT	TQFP-44	8051	32 I/O	8 bit	No ADC