.hide-partial { max-height: none; } .show-more { display: none; }

8051 Core 8-bit Microcontrollers - MCU

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Results: 695

Applied Filters:

Core = 8051

Manufacturer

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

Qualification

Packaging

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

8-bit Microcontrollers - MCU High-Speed/Low-Power Microcontrollers

DS80C320-QCL+
Analog Devices / Maxim Integrated
1: $54.52
41In Stock

Mfr. Part No.
DS80C320-QCL+

Mouser Part No
700-DS80C320-QCL

Analog Devices / Maxim Integrated

8-bit Microcontrollers - MCU High-Speed/Low-Power Microcontrollers

Learn More

Datasheet

41In Stock

$54.52

$48.65

$46.45

$41.55

$39.63

Min.: 1
Mult.: 1

8051

64 kB

256 B

PLCC-44

33 MHz

No ADC

32 I/O

4.5 V

5.5 V

SMD/SMT

8 bit

0 C

+ 70 C

DS80C320

Tube

8-bit Microcontrollers - MCU High-Speed/Low-Power Microcontrollers

DS80C323-MCD+
Analog Devices / Maxim Integrated
1: $21.57
66In Stock

Mfr. Part No.
DS80C323-MCD+

Mouser Part No
700-DS80C323-MCD

Analog Devices / Maxim Integrated

8-bit Microcontrollers - MCU High-Speed/Low-Power Microcontrollers

Learn More

Datasheet

66In Stock

$21.57

$16.93

$16.24

$14.30

View

Min.: 1
Mult.: 1

8051

64 kB

256 B

PDIP-40

18 MHz

No ADC

32 I/O

2.7 V

5.5 V

Through Hole

8 bit

0 C

+ 70 C

DS80C323

Tube

8-bit Microcontrollers - MCU High-Speed/Low-Power Microcontrollers

DS80C323-QCD+
Analog Devices / Maxim Integrated
1: $22.21
56In Stock

Mfr. Part No.
DS80C323-QCD+

Mouser Part No
700-DS80C323-QCD

Analog Devices / Maxim Integrated

8-bit Microcontrollers - MCU High-Speed/Low-Power Microcontrollers

Learn More

Datasheet

56In Stock

$22.21

$17.43

$16.71

$14.72

View

Min.: 1
Mult.: 1

8051

64 kB

256 B

PLCC-44

18 MHz

No ADC

32 I/O

2.7 V

5.5 V

SMD/SMT

8 bit

0 C

+ 70 C

DS80C323

Tube

8-bit Microcontrollers - MCU Ultra-High-Speed Flash Microcontrollers

DS89C430-QNL+
Analog Devices / Maxim Integrated
1: $50.48
45In Stock

Mfr. Part No.
DS89C430-QNL+

Mouser Part No
700-DS89C430-QNL

Analog Devices / Maxim Integrated

8-bit Microcontrollers - MCU Ultra-High-Speed Flash Microcontrollers

Datasheet

45In Stock

$50.48

$43.92

$41.95

$37.52

View

Min.: 1
Mult.: 1

8051

16 kB

1 kB

PLCC-44

33 MHz

No ADC

32 I/O

4.5 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

DS89C430

Tube

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

CY8C3866PVI-021T
Infineon Technologies
1: $31.57
1,000In Stock

Mfr. Part No.
CY8C3866PVI-021T

Mouser Part No
727-CY8C3866PVI-021T

Infineon Technologies

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

Learn More

Datasheet

1,000In Stock

Cut Tape

$31.57

$26.72

$25.62

$22.57

View

Reel

$18.47

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

8051

64 kB

8 kB

SSOP-48

67 MHz

20 bit

1.71 V

1.89 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C3866

Reel, Cut Tape, MouseReel

8-bit Microcontrollers - MCU 25 MIPS, 8 kB, 256, SPI, UART, LIN 2.1, QFN20

C8051F530A-IM
Silicon Labs
1: $6.38
382In Stock
End of Life

Mfr. Part No.
C8051F530A-IM

Mouser Part No
634-C8051F530A-IM

End of Life

Silicon Labs

8-bit Microcontrollers - MCU 25 MIPS, 8 kB, 256, SPI, UART, LIN 2.1, QFN20

Datasheet

382In Stock

$6.38

$5.31

$4.48

$4.25

View

Min.: 1
Mult.: 1

8051

8 kB

256 B

QFN-20

25 MHz

12 bit

16 I/O

1.8 V

5.25 V

SMD/SMT

8 bit

- 40 C

+ 125 C

C8051F530A

Tube

8-bit Microcontrollers - MCU 8051 25 MHz 32 kB 8-bit MCU

C8051F005-GQ
Silicon Labs
1: $39.91
27In Stock
800Expected 20/4/2026
NRND

Mfr. Part No.
C8051F005-GQ

Mouser Part No
634-C8051F005-GQ

NRND

Silicon Labs

8-bit Microcontrollers - MCU 8051 25 MHz 32 kB 8-bit MCU

Datasheet

27In Stock

800Expected 20/4/2026

$39.91

$33.30

$31.32

$28.34

View

Min.: 1
Mult.: 1

8051

32 kB

2.25 kB

TQFP-64

25 MHz

12 bit

32 I/O

2.7 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 85 C

C8051F005

Tray

8-bit Microcontrollers - MCU 64KB,16ADC,100Pin MCU

C8051F064-GQ
Silicon Labs
1: $37.95
2In Stock
NRND

Mfr. Part No.
C8051F064-GQ

Mouser Part No
634-C8051F064-GQ

NRND

Silicon Labs

8-bit Microcontrollers - MCU 64KB,16ADC,100Pin MCU

Datasheet

2In Stock

$37.95

$31.65

$27.65

$26.76

View

Min.: 1
Mult.: 1

8051

64 kB

4.25 kB

TQFP-100

25 MHz

16 bit

59 I/O

2.7 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 85 C

C8051F064

Tray

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

C8051F334-GM
Silicon Labs
1: $11.54
47In Stock
NRND

Mfr. Part No.
C8051F334-GM

Mouser Part No
634-C8051F334-GM

NRND

Silicon Labs

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

Datasheet

47In Stock

$11.54

$8.06

$7.69

$6.67

View

Min.: 1
Mult.: 1

8051

2 kB

768 B

QFN-20

25 MHz

10 bit

17 I/O

2.7 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 85 C

C8051F334

Tube

8-bit Microcontrollers - MCU 8kB/512B RAM, ADC, QFN20

C8051F850-C-IM
Silicon Labs
1: $6.00
93In Stock
NRND

Mfr. Part No.
C8051F850-C-IM

Mouser Part No
634-C8051F850-C-IM

NRND

Silicon Labs

8-bit Microcontrollers - MCU 8kB/512B RAM, ADC, QFN20

Learn More

Datasheet

93In Stock

$6.00

$3.88

$2.74

$2.38

View

Min.: 1
Mult.: 1

8051

8 kB

512 B

QFN-20

25 MHz

12 bit

16 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 125 C

C8051F850

Tube

8-bit Microcontrollers - MCU 16KB Flash ROM, 1KB SRAM, 1 CHs of SPI,1T/8051

ML51BB9AE
Nuvoton
1: $1.11
800In Stock

Mfr. Part No.
ML51BB9AE

Mouser Part No
503-ML51BB9AE

Nuvoton

8-bit Microcontrollers - MCU 16KB Flash ROM, 1KB SRAM, 1 CHs of SPI,1T/8051

Learn More

Datasheet

800In Stock

$1.11

$0.952

$0.805

$0.759

View

Min.: 1
Mult.: 1

8051

16 kB

1 kB

MSOP-10

24 MHz

12 bit

7 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 105 C

Tube

8-bit Microcontrollers - MCU 16KB Flash ROM, 1KB SRAM, 1 CHs of SPI,1T/8051

ML51FB9AE
Nuvoton
1: $1.28
666In Stock

Mfr. Part No.
ML51FB9AE

Mouser Part No
503-ML51FB9AE

Nuvoton

8-bit Microcontrollers - MCU 16KB Flash ROM, 1KB SRAM, 1 CHs of SPI,1T/8051

Learn More

Datasheet

666In Stock

$1.28

$1.09

$0.927

$0.876

View

Min.: 1
Mult.: 1

8051

16 kB

1 kB

TSSOP-20

24 MHz

12 bit

16 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 105 C

Tube

8-bit Microcontrollers - MCU 16KB Flash ROM, 1KB SRAM, 1 CHs of SPI,1T/8051

ML51XB9AE
Nuvoton
1: $1.28
980In Stock

Mfr. Part No.
ML51XB9AE

Mouser Part No
503-ML51XB9AE

Nuvoton

8-bit Microcontrollers - MCU 16KB Flash ROM, 1KB SRAM, 1 CHs of SPI,1T/8051

Learn More

Datasheet

980In Stock

$1.28

$1.09

$1.01

$0.905

View

Min.: 1
Mult.: 1

8051

16 kB

1 kB

QFN-20

24 MHz

12 bit

17 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 105 C

Tray

8-bit Microcontrollers - MCU 64KB Flash, 4KB SRAM, 2 CHs of SPI,1T/8051,LCD,TK

ML56LD1AE
Nuvoton
1: $2.97
180In Stock

Mfr. Part No.
ML56LD1AE

Mouser Part No
503-ML56LD1AE

Nuvoton

8-bit Microcontrollers - MCU 64KB Flash, 4KB SRAM, 2 CHs of SPI,1T/8051,LCD,TK

Learn More

Datasheet

180In Stock

$2.97

$2.52

$2.32

$2.09

View

Min.: 1
Mult.: 1

8051

64 kB

4 kB

LQFP-48

24 MHz

12 bit

42 I/O

1.8 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 105 C

Tray

8-bit Microcontrollers - MCU 16K Bytes Shared with LDROM

MS51BA9AE
Nuvoton
1: $0.904
600In Stock

Mfr. Part No.
MS51BA9AE

Mouser Part No
503-MS51BA9AE

Nuvoton

8-bit Microcontrollers - MCU 16K Bytes Shared with LDROM

Learn More

Datasheet

600In Stock

$0.904

$0.774

$0.656

$0.619

View

Min.: 1
Mult.: 1

8051

8 kB

1 kB

MSOP-10

24 MHz

12 bit

8 I/O

2.4 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 105 C

Tube

8-bit Microcontrollers - MCU 32K Bytes Shared with LDROM

MS51EC0AE
Nuvoton
1: $1.28
1,000In Stock

Mfr. Part No.
MS51EC0AE

Mouser Part No
503-MS51EC0AE

Nuvoton

8-bit Microcontrollers - MCU 32K Bytes Shared with LDROM

Learn More

Datasheet

1,000In Stock

$1.28

$1.09

$0.958

$0.904

View

Min.: 1
Mult.: 1

8051

32 kB

2 kB

TSSOP-28

24 MHz

12 bit

26 I/O

2.4 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 105 C

Tube

8-bit Microcontrollers - MCU 16K Bytes Shared with LDROM

MS51FB9AE
Nuvoton
1: $0.973
3,032In Stock

Mfr. Part No.
MS51FB9AE

Mouser Part No
503-MS51FB9AE

Nuvoton

8-bit Microcontrollers - MCU 16K Bytes Shared with LDROM

Learn More

Datasheet

3,032In Stock

$0.973

$0.831

$0.709

$0.667

View

Min.: 1
Mult.: 1

8051

16 kB

1 kB

TSSOP-20

24 MHz

12 bit

18 I/O

2.4 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 105 C

Tube

8-bit Microcontrollers - MCU 32K Bytes Shared with LDROM

MS51FC0AE
Nuvoton
1: $1.11
814In Stock

Mfr. Part No.
MS51FC0AE

Mouser Part No
503-MS51FC0AE

Nuvoton

8-bit Microcontrollers - MCU 32K Bytes Shared with LDROM

Learn More

Datasheet

814In Stock

$1.11

$0.952

$0.906

$0.765

View

Min.: 1
Mult.: 1

8051

32 kB

2 kB

TSSOP-20

24 MHz

12 bit

18 I/O

2.4 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 105 C

Tube

8-bit Microcontrollers - MCU 32K Bytes Shared with LDROM

MS51PC0AE
Nuvoton
1: $1.53
1,353In Stock

Mfr. Part No.
MS51PC0AE

Mouser Part No
503-MS51PC0AE

Nuvoton

8-bit Microcontrollers - MCU 32K Bytes Shared with LDROM

Learn More

Datasheet

1,353In Stock

$1.53

$1.30

$1.21

$1.08

View

Min.: 1
Mult.: 1

8051

32 kB

2 kB

LQFP-32

24 MHz

12 bit

30 I/O

2.4 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 105 C

Tray

8-bit Microcontrollers - MCU 32K Bytes Shared with LDROM

MS51TC0AE
Nuvoton
1: $1.28
975In Stock

Mfr. Part No.
MS51TC0AE

Mouser Part No
503-MS51TC0AE

Nuvoton

8-bit Microcontrollers - MCU 32K Bytes Shared with LDROM

Learn More

Datasheet

975In Stock

$1.28

$1.09

$1.01

$0.905

View

Min.: 1
Mult.: 1

8051

32 kB

2 kB

QFN-33

24 MHz

12 bit

30 I/O

2.4 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 105 C

Tray

8-bit Microcontrollers - MCU 16K Bytes Shared with LDROM 0.4mm Pitch width

MS51XB9AE
Nuvoton
1: $0.834
899In Stock

Mfr. Part No.
MS51XB9AE

Mouser Part No
503-MS51XB9AE

Nuvoton

8-bit Microcontrollers - MCU 16K Bytes Shared with LDROM 0.4mm Pitch width

Learn More

Datasheet

899In Stock

$0.834

$0.72

$0.671

$0.599

View

Min.: 1
Mult.: 1

8051

16 kB

1 kB

QFN-20

24 MHz

12 bit

18 I/O

2.4 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 105 C

Tray

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

AT89C2051-12PU
Microchip Technology
1: $2.89
671In 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

671In Stock

$2.89

$2.65

$2.39

Min.: 1
Mult.: 1

8051

2 kB

128 B

PDIP-20

12 MHz

No ADC

15 I/O

2.7 V

6 V

Through Hole

8 bit

- 40 C

+ 85 C

89C

Tube

8-bit Microcontrollers - MCU CAN C51 64K FLASH CAN BOOT

AT89C51CC03CA-SLSUM
Microchip Technology
1: $16.10
97In Stock

Mfr. Part No.
AT89C51CC03CA-SLSUM

Mouser Part No
556-A89C51C03CASLSUM

Microchip Technology

8-bit Microcontrollers - MCU CAN C51 64K FLASH CAN BOOT

Learn More

Datasheet

97In Stock

$16.10

$14.79

$13.37

Min.: 1
Mult.: 1

8051

64 kB

2 kB

PLCC-44

60 MHz

10 bit

36 I/O

3 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

89C

Tube

8-bit Microcontrollers - MCU CAN C51 64K FLASH UAR BOOT

AT89C51CC03UA-SLSUM
Microchip Technology
1: $16.10
134In Stock

Mfr. Part No.
AT89C51CC03UA-SLSUM

Mouser Part No
556-A89C51C03UASLSUM

Microchip Technology

8-bit Microcontrollers - MCU CAN C51 64K FLASH UAR BOOT

Learn More

Datasheet

134In Stock

$16.10

$14.79

$13.37

Min.: 1
Mult.: 1

8051

64 kB

2 kB

PLCC-44

60 MHz

10 bit

36 I/O

3 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

89C

Tube

8-bit Microcontrollers - MCU C51RB2 FLASH 5V 16k ind

AT89C51RB2-3CSUM
Microchip Technology
1: $10.43
77In Stock
140Expected 23/3/2026

Mfr. Part No.
AT89C51RB2-3CSUM

Mouser Part No
556-A89C51RB2-3CSUM

Microchip Technology

8-bit Microcontrollers - MCU C51RB2 FLASH 5V 16k ind

Learn More

Datasheet

77In Stock

140Expected 23/3/2026

$10.43

$9.56

$8.66

Min.: 1
Mult.: 1

8051

16 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

8051 Core 8-bit Microcontrollers - MCU

Customer Service Office

Company

Resources

Support

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
3.25 kB
4 kB
4.25 kB
4.35 kB
8 kB

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
QFN-40
QFN-48

4 I/O
6 I/O
7 I/O
8 I/O
11 I/O
12 I/O
13 I/O
15 I/O
16 I/O
17 I/O
18 I/O
20 I/O
21 I/O
24 I/O
25 I/O
26 I/O
28 I/O
29 I/O
30 I/O
31 I/O

80C
89C
89LP
89LS
89S
AT89C55WD
C8051F005
C8051F006
C8051F007
C8051F015
C8051F016
C8051F017
C8051F018
C8051F019
C8051F020
C8051F021
C8051F022
C8051F023
C8051F040
C8051F041