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8051 Core Embedded Processors & Controllers

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Types of Embedded Processors & Controllers

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Results: 604

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Core = 8051

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Part #

8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V

CY8C3245LTI-139
Infineon Technologies
1: $13.11
449In Stock

Mfr. Part No.
CY8C3245LTI-139

Mouser Part No
727-CY8C3245LTI-139

Infineon Technologies

8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V

Learn More

Datasheet

449In Stock

$13.11

$10.20

$9.03

$8.66

View

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

QFN-48

8051

8 bit

50 MHz

32 kB

4 kB

12 bit

29 I/O

- 40 C

+ 85 C

Tray

8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V

CY8C3245LTI-163
Infineon Technologies
1: $13.26
633In Stock

Mfr. Part No.
CY8C3245LTI-163

Mouser Part No
727-CY8C3245LTI-163

Infineon Technologies

8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V

Learn More

Datasheet

633In Stock

$13.26

$10.32

$9.14

$8.77

View

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

QFN-68

8051

8 bit

50 MHz

32 kB

4 kB

12 bit

46 I/O

- 40 C

+ 85 C

Tray

8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V

CY8C3246PVI-147
Infineon Technologies
1: $16.31
371In Stock

Mfr. Part No.
CY8C3246PVI-147

Mouser Part No
727-CY8C3246PVI-147

Infineon Technologies

8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V

Learn More

Datasheet

371In Stock

$16.31

$15.37

$11.23

$10.81

View

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

SSOP-48

8051

8 bit

50 MHz

64 kB

8 kB

12 bit

31 I/O

- 40 C

+ 85 C

Tube

8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V

CY8C3666LTI-027
Infineon Technologies
1: $30.68
147In Stock

Mfr. Part No.
CY8C3666LTI-027

Mouser Part No
727-CY8C3666LTI-027

Infineon Technologies

8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V

Learn More

Datasheet

147In Stock

$30.68

$24.52

$22.06

$21.96

View

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

QFN-68

8051

8 bit

67 MHz

64 kB

8 kB

12 bit

28 I/O

+ 85 C

Tray

8-bit Microcontrollers - MCU 32K Flash 4K SRAM 8bit 67 MHz

CY8C3666LTI-203
Infineon Technologies
1: $22.88
1,122In Stock

Mfr. Part No.
CY8C3666LTI-203

Mouser Part No
727-CY8C3666LTI-203

Infineon Technologies

8-bit Microcontrollers - MCU 32K Flash 4K SRAM 8bit 67 MHz

Learn More

Datasheet

1,122In Stock

$22.88

$18.12

$16.21

$15.63

View

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

QFN-68

8051

8 bit

67 MHz

64 kB

8 kB

12 bit

46 I/O

- 40 C

+ 85 C

Tray

8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V

CY8C3866AXI-040
Infineon Technologies
1: $37.51
297In Stock

Mfr. Part No.
CY8C3866AXI-040

Mouser Part No
727-CY8C3866AXI-040

Infineon Technologies

8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V

Learn More

Datasheet

297In Stock

$37.51

$29.35

$28.03

$25.06

View

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

TQFP-100

8051

8 bit

67 MHz

64 kB

8 kB

20 bit

72 I/O

- 40 C

+ 85 C

Tray

8-bit Microcontrollers - MCU 8051 8bit 67MHz 64KB

CY8C3866AXI-040T
Infineon Technologies
1: $36.60
559In Stock

Mfr. Part No.
CY8C3866AXI-040T

Mouser Part No
727-CY8C3866AXI-040T

Infineon Technologies

8-bit Microcontrollers - MCU 8051 8bit 67MHz 64KB

Learn More

Datasheet

559In Stock

Cut Tape

$36.60

$29.38

$26.53

$25.32

View

Reel

$23.08

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

8-bit Microcontrollers - MCU

SMD/SMT

TQFP-100

8051

8 bit

67 MHz

64 kB

8 kB

20 bit

72 I/O

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V

CY8C3866PVI-070
Infineon Technologies
1: $30.08
237In Stock

Mfr. Part No.
CY8C3866PVI-070

Mouser Part No
727-CY8C3866PVI-070

Infineon Technologies

8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V

Learn More

Datasheet

237In Stock

$30.08

$27.65

$21.39

$20.69

View

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

SSOP-48

8051

8 bit

67 MHz

64 kB

8 kB

20 bit

29 I/O

- 40 C

+ 85 C

Tube

8-bit Microcontrollers - MCU 64KB,16ADC,CAN,64Pin MCU

C8051F061-GQ
Silicon Labs
1: $54.50
3,579In Stock
End of Life

Mfr. Part No.
C8051F061-GQ

Mouser Part No
634-C8051F061-GQ

End of Life

Silicon Labs

8-bit Microcontrollers - MCU 64KB,16ADC,CAN,64Pin MCU

Datasheet

3,579In Stock

$54.50

$45.63

$42.47

$39.13

Quote

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

TQFP-64

8051

8 bit

25 MHz

64 kB

4.25 kB

10 bit, 2 x 16 bit

24 I/O

- 40 C

+ 85 C

Tray

8-bit Microcontrollers - MCU 100MIPS,128KB,12ADC,100Pin MCU

C8051F120-GQR
Silicon Labs
1: $69.26
471In Stock
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

471In Stock

Cut Tape

$69.26

$57.28

$54.88

$51.97

Reel

$48.29

Quote

Min.: 1
Mult.: 1

: 250

8-bit Microcontrollers - MCU

SMD/SMT

TQFP-100

8051

8 bit

100 MHz

128 kB

8.25 kB

8 bit, 12 bit

64 I/O

- 40 C

+ 85 C

Reel, Cut Tape

8-bit Microcontrollers - MCU 8051 100 MHz 128 kB MAC 8-bit MCU

C8051F121-GQ
Silicon Labs
1: $68.00
1,248In Stock
End of Life

Mfr. Part No.
C8051F121-GQ

Mouser Part No
634-C8051F121-GQ

End of Life

Silicon Labs

8-bit Microcontrollers - MCU 8051 100 MHz 128 kB MAC 8-bit MCU

Datasheet

1,248In Stock

$68.00

$56.66

$53.01

$50.29

View

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

TQFP-64

8051

8 bit

100 MHz

128 kB

8.25 kB

8 bit, 12 bit

32 I/O

- 40 C

+ 85 C

Tray

8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 5 V 8-bit MCU

C8051F501-IM
Silicon Labs
1: $17.60
600In Stock
End of Life

Mfr. Part No.
C8051F501-IM

Mouser Part No
634-C8051F501-IM

End of Life

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 5 V 8-bit MCU

Datasheet

600In Stock

$17.60

$14.48

$13.11

$12.20

View

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

QFN-48

8051

8 bit

50 MHz

64 kB

4.25 kB

12 bit

40 I/O

- 40 C

+ 125 C

AEC-Q100

Tube

8-bit Microcontrollers - MCU 8051 50 MHz 128 kB 5 V CAN LIN 8-bit MCU

C8051F582-IM
Silicon Labs
1: $21.75
5,023In Stock
End of Life

Mfr. Part No.
C8051F582-IM

Mouser Part No
634-C8051F582-IM

End of Life

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 128 kB 5 V CAN LIN 8-bit MCU

Datasheet

5,023In Stock

$21.75

$18.05

$15.72

$15.27

View

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

QFN-32

8051

8 bit

50 MHz

128 kB

8.25 kB

12 bit

25 I/O

- 40 C

+ 125 C

AEC-Q100

Tube

8-bit Microcontrollers - MCU Automotive MCU with 2KB SRAM and 32Kx16 ECC E-Flash, QFN-24 (4mm x 4mm)

IS32CS8974A-QWLCA3-TR
Lumissil
1: $1.75
2,450In Stock
New Product

Mfr. Part No.
IS32CS8974A-QWLCA3-TR

Mouser Part No
870-32CS8974AQWLA3TR

New Product

Lumissil

8-bit Microcontrollers - MCU Automotive MCU with 2KB SRAM and 32Kx16 ECC E-Flash, QFN-24 (4mm x 4mm)

Learn More

Datasheet

2,450In Stock

Cut Tape

$1.75

$1.50

$1.31

$1.23

Reel

$0.972

View

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

+ 125 C

Reel, Cut Tape

8-bit Microcontrollers - MCU 8051 25 MHz 2 kB 8-bit MCU

C8051F860-C-GS
Silicon Labs
1: $4.05
375In Stock
NRND

Mfr. Part No.
C8051F860-C-GS

Mouser Part No
634-C8051F860-C-GS

NRND

Silicon Labs

8-bit Microcontrollers - MCU 8051 25 MHz 2 kB 8-bit MCU

Learn More

Datasheet

375In Stock

$4.05

$3.55

$2.84

$2.68

View

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

SOIC-16

8051

8 bit

25 MHz

8 kB

512 B

12 bit

13 I/O

- 40 C

+ 85 C

AEC-Q100

Tube

8-bit Microcontrollers - MCU 2kB Flash 128B RAM 24MHz 2.7V-6.0V

AT89C2051-24PU
Microchip Technology
1: $2.83
1,413In Stock

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

1,413In Stock

$2.83

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

Through Hole

PDIP-20

8051

8 bit

24 MHz

2 kB

128 B

No ADC

15 I/O

- 40 C

+ 85 C

Tube

8-bit Microcontrollers - MCU 20 PINS 2K FLASH 12MHZ 2.7 - 5.5V

AT89C2051-12PU
Microchip Technology
1: $2.83
951In Stock

Mfr. Part No.
AT89C2051-12PU

Mouser Part No
556-A89C205112PU

Microchip Technology

8-bit Microcontrollers - MCU 20 PINS 2K FLASH 12MHZ 2.7 - 5.5V

Datasheet

951In Stock

$2.83

$2.34

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

Through Hole

PDIP-20

8051

8 bit

12 MHz

2 kB

128 B

No ADC

15 I/O

- 40 C

+ 85 C

Tube

8-bit Microcontrollers - MCU CAN-STICK Bootloader UART IND

AT89C51CC01UA-SLSUM
Microchip Technology
1: $13.02
1,539In Stock

Mfr. Part No.
AT89C51CC01UA-SLSUM

Mouser Part No
556-A89C51C01UASLSUM

Microchip Technology

8-bit Microcontrollers - MCU CAN-STICK Bootloader UART IND

Learn More

Datasheet

1,539In Stock

$13.02

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

PLCC-44

8051

8 bit

40 MHz

32 kB

1.2 kB

10 bit

34 I/O

- 40 C

+ 85 C

Tube

8-bit Microcontrollers - MCU 4K ISP FLASH 2.7 TO 5.5V - 24MHz

AT89S51-24AU
Microchip Technology
1: $2.86
4,294In Stock

Mfr. Part No.
AT89S51-24AU

Mouser Part No
556-A89S51-24AU

Microchip Technology

8-bit Microcontrollers - MCU 4K ISP FLASH 2.7 TO 5.5V - 24MHz

Datasheet

4,294In Stock

$2.86

$2.62

$2.38

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

TQFP-44

8051

8 bit

24 MHz

4 kB

128 B

No ADC

32 I/O

- 40 C

+ 85 C

Tray

8-bit Microcontrollers - MCU 8kB Flash 256B RAM 33MHz 4.0V-5.5V

AT89S52-24AU
Microchip Technology
1: $3.09
2,503In Stock

Mfr. Part No.
AT89S52-24AU

Mouser Part No
556-A89S52-24AU

Microchip Technology

8-bit Microcontrollers - MCU 8kB Flash 256B RAM 33MHz 4.0V-5.5V

Datasheet

2,503In Stock

$3.09

$2.57

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

TQFP-44

8051

8 bit

24 MHz

8 kB

256 B

No ADC

32 I/O

- 40 C

+ 85 C

Tray

8-bit Microcontrollers - MCU C51AC2 32kF ADC EEP TQFP44 ind 5V GREEN

AT89C51AC2T-RLTUM
Microchip Technology
1: $13.34
332In Stock
2,720Expected 4/9/2026

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

Datasheet

332In Stock

2,720Expected 4/9/2026

$13.34

$13.30

$13.29

$11.08

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 CAN TQFP44 TRAY I. Bootloader CAN GREEN

AT89C51CC01CAT-RLTUM
Microchip Technology
1: $12.34
922In Stock

Mfr. Part No.
AT89C51CC01CAT-RLTUM

Mouser Part No
556-AT89C51CC01CATUM

Microchip Technology

8-bit Microcontrollers - MCU CAN TQFP44 TRAY I. Bootloader CAN GREEN

Learn More

Datasheet

922In Stock

$12.34

$11.30

$10.24

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

TQFP-44

8051

8 bit

40 MHz

32 kB

1.25 kB

10 bit

34 I/O

- 40 C

+ 85 C

Tray

8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V

AT89LP51ED2-20AAU
Microchip Technology
1: $7.67
676In Stock

Mfr. Part No.
AT89LP51ED2-20AAU

Mouser Part No
556-AT89LP51ED220AAU

Microchip Technology

8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V

Learn More

Datasheet

676In Stock

$7.67

$7.00

$6.36

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

LQFP-44

8051

8 bit

20 MHz

64 kB

256 B

10 bit

36 I/O

- 40 C

+ 85 C

Tray

8-bit Microcontrollers - MCU Single-Cycle 805132K ISP Flash,2.4-5.5V

AT89LP51RC2-20AU
Microchip Technology
1: $5.79
593In Stock

Mfr. Part No.
AT89LP51RC2-20AU

Mouser Part No
556-AT89LP51RC2-20AU

Microchip Technology

8-bit Microcontrollers - MCU Single-Cycle 805132K ISP Flash,2.4-5.5V

Learn More

Datasheet

593In Stock

$5.79

$5.32

$4.80

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

TQFP-44

8051

8 bit

20 MHz

32 kB

256 B

10 bit

40 I/O

- 40 C

+ 85 C

Tray

8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V

AT89LP51RD2-20AU
Microchip Technology
1: $7.10
972In Stock

Mfr. Part No.
AT89LP51RD2-20AU

Mouser Part No
556-AT89LP51RD2-20AU

Microchip Technology

8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V

Learn More

Datasheet

972In Stock

$7.10

$6.68

$6.66

$5.78

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU

SMD/SMT

TQFP-44

8051

8 bit

20 MHz

64 kB

256 B

10 bit

40 I/O

- 40 C

+ 85 C

Tray

8051 Core Embedded Processors & Controllers

Types of Embedded Processors & Controllers

Customer Service Office

Company

Resources

Support

BGA-82
LGA-42
LQFP-32
LQFP-44
LQFP-48
LQFP-64
MSOP-10
PDIP-20
PDIP-40
PLCC-28
PLCC-44
PLCC-68
PQFP-44
PQFP-48
QFN-11
QFN-20
QFN-24
QFN-28
QFN-32
QFN-33

128 B
256 B
512 B
768 B
1 kB
1.2 kB
1.25 kB
1.28 kB
1.54 kB
1.75 kB
2 KB
2 kB
2.25 kB
2.3 kB
2.31 kB
4 kB
4.25 kB
4.35 kB
4352 B
6 kB

4 I/O
5 I/O
6 I/O
7 I/O
8 I/O
9 I/O
11 I/O
12 I/O
13 I/O
15 I/O
16 I/O
17 I/O
18 I/O
19 I/O
20 I/O
21 I/O
23 I/O
24 I/O
25 I/O
26 I/O