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CIP-51 8051 Core 8-bit Microcontrollers - MCU

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Results: 208

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Part #

8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

EFM8BB22F16I-C-QFN28
Silicon Labs
1: $4.43
1In Stock

Mfr. Part No.
EFM8BB22F16I-C-QFN28

Mouser Part No
634-8BB22F16ICQFN28

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

1In Stock

$4.43

$2.89

$2.65

$2.28

View

Min.: 1
Mult.: 1

CIP-51 8051

16 kB

2.3 kB

QFN-28

50 MHz

12 bit

22 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 125 C

EFM8BB2

Tube

8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

EFM8BB21F16A-C-QFN20R
Silicon Labs
1: $6.21
1,498Expected 22/1/2027

Mfr. Part No.
EFM8BB21F16A-C-QFN20R

Mouser Part No
634-BB21F16ACQFN20R

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

1,498Expected 22/1/2027

Cut Tape

$6.21

$4.11

$3.74

$3.18

Reel

$2.29

View

Min.: 1
Mult.: 1

: 1,500

CIP-51 8051

16 kB

2.25 kB

QFN-20

50 MHz

12 bit

16 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 125 C

EFM8BB2

AEC-Q100

Reel, Cut Tape

8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

EFM8BB31F32I-D-QFP32
Silicon Labs
1: $5.41
1,248Expected 9/6/2026
End of Life

Mfr. Part No.
EFM8BB31F32I-D-QFP32

Mouser Part No
634-EF8BB31F32IDQP32

End of Life

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

1,248Expected 9/6/2026

$5.41

$3.57

$3.27

$2.77

View

Min.: 1
Mult.: 1

CIP-51 8051

32 kB

2.3 kB

QFP-32

50 MHz

10 bit, 12 bit

28 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 125 C

Tray

8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU

EFM8BB10F8I-A-SOIC16R
Silicon Labs
2,500: $0.884
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8BB10F8I-A-SOIC16R

Mouser Part No
634-8BB10F8IASOIC16R

Silicon Labs

8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$0.884

$0.858

$0.853

Min.: 2,500
Mult.: 2,500

: 2,500

CIP-51 8051

8 kB

512 B

SOIC-16

25 MHz

12 bit

13 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 125 C

EFM8BB1

Reel

8-bit Microcontrollers - MCU 8051 25 MHz 4 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU

EFM8SB10F4G-A-QFN20R
Silicon Labs
1: $3.28
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8SB10F4G-A-QFN20R

Mouser Part No
634-8SB10F4GAQF20R

Silicon Labs

8-bit Microcontrollers - MCU 8051 25 MHz 4 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU

Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

$3.28

$2.11

$1.56

$1.47

Reel

$1.04

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

CIP-51 8051

4 kB

512 B

QFN-20

25 MHz

12 bit

16 I/O

1.8 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

8-bit Microcontrollers - MCU 8051 25 MHz 16 kB 8-bit MCU

C8051F317-GM
Silicon Labs
1,911: $7.44
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
C8051F317-GM

Mouser Part No
634-C8051F317-GM

Silicon Labs

8-bit Microcontrollers - MCU 8051 25 MHz 16 kB 8-bit MCU

Datasheet

Non-Stocked Lead-Time 12 Weeks

$7.44

Quote

Min.: 1,911
Mult.: 1,911

CIP-51 8051

16 kB

1.28 kB

QFN-24

25 MHz

10 bit

21 I/O

2.7 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 85 C

C8051F317

Tube

8-bit Microcontrollers - MCU 8051 25 MHz 16 kB 8-bit MCU

C8051F317-GMR
Silicon Labs
1: $15.76
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
C8051F317-GMR

Mouser Part No
634-C8051F317-GMR

Silicon Labs

8-bit Microcontrollers - MCU 8051 25 MHz 16 kB 8-bit MCU

Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

$15.76

$12.26

$11.69

$10.15

View

Reel

$7.70

Min.: 1
Mult.: 1

: 1,500

CIP-51 8051

16 kB

1.28 kB

QFN-24

25 MHz

10 bit

21 I/O

2.7 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 85 C

C8051F317

Reel, Cut Tape

8-bit Microcontrollers - MCU USB-Flash-16k-ADC-QFN28 OTP available (T321-GM)

C8051F321-GMR
Silicon Labs
1,500: $12.04
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
C8051F321-GMR

Mouser Part No
634-C8051F321-GMR

Silicon Labs

8-bit Microcontrollers - MCU USB-Flash-16k-ADC-QFN28 OTP available (T321-GM)

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$12.04

Quote

Min.: 1,500
Mult.: 1,500

: 1,500

CIP-51 8051

16 kB

2.3 kB

QFN-28

25 MHz

10 bit

21 I/O

2.7 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 85 C

C8051F321

Reel

8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

EFM8BB31F16A-D-4QFN24R
Silicon Labs
1,500: $2.40
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8BB31F16A-D-4QFN24R

Mouser Part No
634-EF8BB31F16AD424R

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$2.40

$2.34

Min.: 1,500
Mult.: 1,500

: 1,500

CIP-51 8051

16 kB

2.3 kB

QFN-24

50 MHz

10 bit, 12 bit

20 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 125 C

Reel

8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

EFM8BB31F16A-D-4QFN24
Silicon Labs
1,911: $2.40
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8BB31F16A-D-4QFN24

Mouser Part No
634-EF8BB31F16AD4F24

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$2.40

$2.34

Min.: 1,911
Mult.: 1,911

CIP-51 8051

16 kB

2.3 kB

QFN-24

50 MHz

10 bit, 12 bit

20 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

EFM8BB31F16A-D-5QFN32R
Silicon Labs
1,500: $2.65
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8BB31F16A-D-5QFN32R

Mouser Part No
634-EF8BB31F16AD532R

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$2.65

$2.60

Min.: 1,500
Mult.: 1,500

: 1,500

CIP-51 8051

16 kB

2.3 kB

QFN-32

50 MHz

10 bit, 12 bit

29 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 125 C

Reel

8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

EFM8BB31F16A-D-5QFN32
Silicon Labs
1,533: $2.65
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8BB31F16A-D-5QFN32

Mouser Part No
634-EF8BB31F16AD5F32

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$2.65

$2.59

Quote

Min.: 1,533
Mult.: 1,533

CIP-51 8051

16 kB

2.3 kB

QFN-32

50 MHz

10 bit, 12 bit

29 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

EFM8BB31F16I-D-5QFN32R
Silicon Labs
1: $4.14
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8BB31F16I-D-5QFN32R

Mouser Part No
634-EF8BB31F16ID532R

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

$4.14

$2.70

$2.47

$2.13

Reel

$1.45

View

Min.: 1
Mult.: 1

: 1,500

CIP-51 8051

16 kB

2.3 kB

QFN-32

50 MHz

10 bit, 12 bit

29 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 125 C

Reel, Cut Tape

8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

EFM8BB31F16I-D-5QFN32
Silicon Labs
1: $4.14
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8BB31F16I-D-5QFN32

Mouser Part No
634-EF8BB31F16ID5F32

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$4.14

$2.70

$2.47

$2.13

View

Min.: 1
Mult.: 1

CIP-51 8051

16 kB

2.3 kB

QFN-32

50 MHz

10 bit, 12 bit

29 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

EFM8BB31F16I-D-QFP32R
Silicon Labs
1: $4.70
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8BB31F16I-D-QFP32R

Mouser Part No
634-EF8BB31F16IDP32R

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

$4.70

$3.10

$2.86

$2.49

Reel

$2.02

View

Min.: 1
Mult.: 1

: 500

CIP-51 8051

16 kB

2.3 kB

QFP-32

50 MHz

10 bit, 12 bit

28 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 125 C

Reel, Cut Tape

8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

EFM8BB31F32A-D-5QFN32R
Silicon Labs
1,500: $2.74
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8BB31F32A-D-5QFN32R

Mouser Part No
634-EF8BB31F32AD532R

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$2.74

$2.65

Min.: 1,500
Mult.: 1,500

: 1,500

CIP-51 8051

32 kB

2.3 kB

QFN-32

50 MHz

10 bit, 12 bit

29 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 125 C

Reel

8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

EFM8BB31F32A-D-5QFN32
Silicon Labs
1,533: $2.74
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8BB31F32A-D-5QFN32

Mouser Part No
634-EF8BB31F32AD5F32

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$2.74

$2.65

Min.: 1,533
Mult.: 1,533

CIP-51 8051

32 kB

2.3 kB

QFN-32

50 MHz

10 bit, 12 bit

29 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

EFM8BB31F32G-D-QFN32R
Silicon Labs
1: $4.55
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8BB31F32G-D-QFN32R

Mouser Part No
634-EF8BB31F32GDN32R

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

$4.55

$2.96

$2.72

$2.34

View

Reel

$1.49

Min.: 1
Mult.: 1

: 2,500

CIP-51 8051

32 kB

2.3 kB

QFN-32

50 MHz

10 bit, 12 bit

29 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 85 C

Reel, Cut Tape

8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

EFM8BB31F32G-D-QFN24
Silicon Labs
1: $4.20
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8BB31F32G-D-QFN24

Mouser Part No
634-EF8BB31F32GDQF24

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$4.20

$2.74

$2.52

$2.15

View

Min.: 1
Mult.: 1

CIP-51 8051

32 kB

2.3 kB

QFN-24

50 MHz

10 bit, 12 bit

20 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 85 C

Tube

8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

EFM8BB31F32G-D-QFP32
Silicon Labs
1,250: $1.86
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8BB31F32G-D-QFP32

Mouser Part No
634-EF8BB31F32GDQP32

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$1.86

$1.77

Min.: 1,250
Mult.: 1,250

CIP-51 8051

32 kB

2.3 kB

QFP-32

50 MHz

10 bit, 12 bit

28 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 85 C

Tray

8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU

EFM8BB31F64A-D-5QFN32R
Silicon Labs
1,500: $2.92
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8BB31F64A-D-5QFN32R

Mouser Part No
634-EF8BB31F64AD532R

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$2.92

$2.91

Min.: 1,500
Mult.: 1,500

: 1,500

CIP-51 8051

64 kB

4.35 kB

QFN-32

50 MHz

10 bit, 12 bit

29 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 125 C

Reel

8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU

EFM8BB31F64A-D-5QFN32
Silicon Labs
1,533: $3.11
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8BB31F64A-D-5QFN32

Mouser Part No
634-EF8BB31F64AD5F32

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$3.11

$3.04

Min.: 1,533
Mult.: 1,533

CIP-51 8051

64 kB

4.35 kB

QFN-32

50 MHz

10 bit, 12 bit

29 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 125 C

Tube

8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU

EFM8BB31F64I-D-QFN24R
Silicon Labs
1,500: $2.02
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8BB31F64I-D-QFN24R

Mouser Part No
634-EF8BB31F64IDF24R

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$2.02

$1.95

Min.: 1,500
Mult.: 1,500

: 1,500

CIP-51 8051

64 kB

4.35 kB

QFN-24

50 MHz

10 bit, 12 bit

20 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 125 C

Reel

8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU

EFM8BB31F64I-D-QFN32R
Silicon Labs
1: $5.73
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8BB31F64I-D-QFN32R

Mouser Part No
634-EF8BB31F64IDN32R

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

$5.73

$3.79

$3.46

$2.93

View

Reel

$1.99

Min.: 1
Mult.: 1

: 2,500

CIP-51 8051

64 kB

4.35 kB

QFN-32

50 MHz

10 bit, 12 bit

29 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 125 C

Reel, Cut Tape

8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU

EFM8BB31F64I-D-QFN24
Silicon Labs
2,520: $1.92
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8BB31F64I-D-QFN24

Mouser Part No
634-EF8BB31F64IDQF24

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$1.92

$1.90

Min.: 2,520
Mult.: 2,520

CIP-51 8051

64 kB

4.35 kB

QFN-24

50 MHz

10 bit, 12 bit

20 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 125 C

Tube

CIP-51 8051 Core 8-bit Microcontrollers - MCU

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