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8051 Core Embedded Processors & Controllers

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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.	Product Type	Mounting Style	Package/Case	Core	Data Bus Width	Maximum Clock Frequency	Program Memory Size	Data RAM Size	ADC Resolution	Number of I/Os	Minimum Operating Temperature	Maximum Operating Temperature	Packaging
8-bit Microcontrollers - MCU C51ID2 64kF 32KHz TQFP44 3-5.5V I. GREEN AT89C51ID2T-RLTUM Microchip Technology 1: $12.08 1,907In 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	1,907In Stock	$12.08 $11.07 $10.04	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	TQFP-44	8051	8 bit	60 MHz	64 kB	2 kB	No ADC	34 I/O	- 40 C	+ 85 C	Tray
RF Microcontrollers - MCU RF+MCU 8051 25 MHz 16 kB +20 dBm SI1060-A-GM Silicon Labs 1: $12.15 2,404In Stock	Mfr. Part No. SI1060-A-GM Mouser Part No 634-SI1060-A-GM	Silicon Labs	RF Microcontrollers - MCU RF+MCU 8051 25 MHz 16 kB +20 dBm Learn More about Silicon Labs siliconlabssi100x	Datasheet	2,404In Stock	$12.15 $9.92 $9.29 $8.52 View $7.97 Quote	Min.: 1 Mult.: 1	RF Microcontrollers - MCU	SMD/SMT	QFN-36	8051	8 bit	25 MHz	64 kB	4 kB	10 bit	11 I/O	- 40 C	+ 85 C	Tray
8-bit Microcontrollers - MCU PSoC 32KB FLASH 1.7-5.5V 25 I/O CY8C3245LTI-139T Infineon Technologies 1: $10.93 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 $10.93 $8.45 $8.06 $7.00 View Reel $6.12 $6.68 $6.12 $6.12 Quote	Min.: 1 Mult.: 1 : 2,000	8-bit Microcontrollers - MCU	SMD/SMT	QFN-48	8051	8 bit								Reel, Cut Tape
8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V CY8C3446LTI-073 Infineon Technologies 1: $13.68 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	$13.68 $11.83 $10.56 $10.17 View $9.74 $9.43 $9.32 Quote	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	QFN-48	8051	8 bit	50 MHz	64 kB	8 kB	12 bit	31 I/O	- 40 C	+ 85 C	Tray
8-bit Microcontrollers - MCU MCU with 2KB SRAM and 32Kx16 ECC E-Flash, QFN-24 (4mm x 4mm) IS31CS8974A-QFLS2-TR Lumissil 1: $2.08 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 $2.08 $1.33 $1.19 $0.976 Reel $0.618 View $0.851 $0.806 $0.678 $0.612	Min.: 1 Mult.: 1 : 2,500	8-bit Microcontrollers - MCU	SMD/SMT	WQFN-24	8051	8 bit	25 MHz	32 KB	2 KB		20 I/O	- 40 C	+ 85 C	Reel, Cut Tape
8-bit Microcontrollers - MCU C51AC2 32kF ADC EEP TQFP44 ind 5V GREEN AT89C51AC2T-RLTUM Microchip Technology 1: $9.81 2,918In 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	2,918In Stock	$9.81 $9.78 $9.77 $8.33 $8.15	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	TQFP-44	8051	8 bit	40 MHz	32 kB	128 B	10 bit	34 I/O	- 40 C	+ 85 C	Tray
8-bit Microcontrollers - MCU 20 PINS UART 2K FLASH-24MHZ 4-5.5V AT89C2051-24SU Microchip Technology 1: $1.44 2,549In 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	2,549In Stock	$1.44 $1.33 $1.20	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	SOIC-20	8051	8 bit	24 MHz	2 kB	128 B	No ADC	15 I/O	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU 8051 4K FLASH 2.7 TO 5.5V 24MHZ 4V-5.5V AT89C4051-24PU Microchip Technology 1: $2.12 942In Stock 1,404Expected 07/10/2026	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	942In Stock 1,404Expected 07/10/2026	$2.12 $1.94 $1.76	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	Through Hole	PDIP-20	8051	8 bit	24 MHz	4 kB	128 B	No ADC	15 I/O	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU C51 16K Flash ADC AT89C5115-SISUM Microchip Technology 1: $9.67 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	$9.67 $8.86 $8.01	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	PLCC-28	8051	8 bit	40 MHz	16 kB	512 B	10 bit	20 I/O	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU C5130A 16K Flash USB 5V AT89C5130A-RDTUM Microchip Technology 1: $9.18 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	$9.18 $8.41 $8.31	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	VQFP-64	8051	8 bit	48 MHz	16 kB	1 kB	No ADC	34 I/O	- 40 C	+ 85 C	Tray
8-bit Microcontrollers - MCU C51AC3 64K FLASHADC EEP 5V AT89C51AC3-SLSUM Microchip Technology 1: $10.72 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	$10.72 $9.84 $8.90	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	PLCC-44	8051	8 bit	60 MHz	64 kB	2 kB	10 bit	36 I/O	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU CAN/C51 Boot CAN AT89C51CC02CA-RATUM Microchip Technology 1: $8.17 500In 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	500In Stock	$8.17 $7.50 $6.81	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	VQFP-32	8051	8 bit	40 MHz	16 kB	512 B	10 bit	20 I/O	- 40 C	+ 85 C	Tray
8-bit Microcontrollers - MCU CAN C51 64K FLASH UAR BOOT AT89C51CC03UA-RDTUM Microchip Technology 1: $10.71 421In 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	421In Stock	$10.71 $9.82 $8.88	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	VQFP-64	8051	8 bit	60 MHz	64 kB	2 kB	10 bit	36 I/O	- 40 C	+ 85 C	Tray
8-bit Microcontrollers - MCU 64kB Flash 2048B RAM 2.7V-5.5V AT89C51ED2-SLSUM Microchip Technology 1: $10.31 1,073In 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	1,073In Stock	$10.31 $9.45 $8.56	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	PLCC-44	8051	8 bit	60 MHz	64 kB	2 kB	No ADC	34 I/O	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU C51ED2 64K FLASH 3-5.5V Ind AT89C51ED2-SMSUM Microchip Technology 1: $10.96 784In 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	784In Stock	$10.96 $10.04 $9.10	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	PLCC-68	8051	8 bit	60 MHz	64 kB	2 kB	No ADC	48 I/O	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU C51RB2 16K FLASH 5V COM AT89C51RB2-SLSUM Microchip Technology 1: $7.51 719In Stock 3,618Expected 26/10/2026	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	719In Stock 3,618Expected 26/10/2026	$7.51 $7.03 $6.99 $6.73 View $6.47 $6.46	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	PLCC-44	8051	8 bit	60 MHz	16 kB	1.25 kB	No ADC	32 I/O	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU 32K FLASH 4.0 TO 5.5V - 24MHZ 5V AT89C51RC-24JU Microchip Technology 1: $4.66 807In 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	807In Stock	$4.66 $4.29 $4.24	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	PLCC-44	8051	8 bit	24 MHz	32 kB	512 B	No ADC	32 I/O	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU 32K FLASH 4.0 TO 5.5V AT89C51RC-24PU Microchip Technology 1: $5.17 392In Stock 690Expected 27/10/2026	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	392In Stock 690Expected 27/10/2026	$5.17 $4.75 $4.57	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	Through Hole	PDIP-40	8051	8 bit	24 MHz	32 kB	512 B	No ADC	32 I/O	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU 32kB Flash 1280B RAM 2.7V-5.5V AT89C51RC2-3CSUM Microchip Technology 1: $9.42 203In Stock	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	203In Stock	$9.42 $8.65 $7.83	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	Through Hole	PDIP-40	8051	8 bit	60 MHz	32 kB	1.25 kB	No ADC	32 I/O	- 40 C	+ 85 C	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	8-bit Microcontrollers - MCU	SMD/SMT	PLCC-44	8051	8 bit	60 MHz	64 kB	2 kB		34 I/O	- 40 C	+ 85 C	Reel, Cut Tape
8-bit Microcontrollers - MCU 64kB Flash 2048B RAM 2.7V-5.5V AT89C51RD2-SLSUM Microchip Technology 1: $9.01 1,315In Stock 2,538Expected 14/10/2026	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	1,315In Stock 2,538Expected 14/10/2026	$9.01 $8.27 $7.49	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	PLCC-44	8051	8 bit	60 MHz	64 kB	2 kB		32 I/O	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU SINGLE CYCLE 4K FLASH-20MHZ 2.4-5.5V AT89LP4052-20PU Microchip Technology 1: $2.69 1,235In 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	1,235In Stock	$2.69 $2.46 $2.44	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	Through Hole	PDIP-20	8051	8 bit	20 MHz	4 kB	256 B	No ADC	15 I/O	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU SINGLE CYCLE 4K FLASH-20MHZ 2.4-5.5V AT89LP4052-20SU Microchip Technology 1: $2.46 935In 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	935In Stock	$2.46 $2.25 $2.03	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	SOIC-20	8051	8 bit	20 MHz	4 kB	256 B	No ADC	15 I/O	- 40 C	+ 85 C	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	8-bit Microcontrollers - MCU	SMD/SMT	PLCC-44	8051	8 bit	16 MHz	8 kB	256 B	No ADC	32 I/O	- 40 C	+ 85 C	Tube
8-bit Microcontrollers - MCU 4kB Flash 128B RAM 33MHz 4.0V-5.5V AT89S51-24PU Microchip Technology 1: $3.32 3,099In 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	3,099In Stock	$3.32 $3.05 $2.76	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	Through Hole	PDIP-40	8051	8 bit	24 MHz	4 kB	128 B	No ADC	32 I/O	- 40 C	+ 85 C	Tube