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50 MHz 8-bit Microcontrollers - MCU

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Part #

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

CY8C3246LTI-149
Infineon Technologies
1: $12.54
8In Stock

Mfr. Part No.
CY8C3246LTI-149

Mouser Part No
727-CY8C3246LTI-149

Infineon Technologies

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

Learn More

Datasheet

8In Stock

$12.54

$9.86

$9.19

$8.46

View

Min.: 1
Mult.: 1

8051

64 kB

8 kB

QFN-68

50 MHz

12 bit

46 I/O

1.71 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C3246

Tray

8-bit Microcontrollers - MCU PSoC 32KB FLASH 1.7-5.5V 38 I/O

CY8C3246LTI-149T
Infineon Technologies
1: $14.53
23In Stock

Mfr. Part No.
CY8C3246LTI-149T

Mouser Part No
727-CY8C3246LTI-149T

Infineon Technologies

8-bit Microcontrollers - MCU PSoC 32KB FLASH 1.7-5.5V 38 I/O

Learn More

Datasheet

23In Stock

Cut Tape

$14.53

$11.04

$10.58

$9.32

View

Reel

$7.58

Min.: 1
Mult.: 1

: 2,000

8051

64 kB

8 kB

QFN-68

50 MHz

12 bit

46 I/O

1.71 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C3246

Reel, Cut Tape

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

CY8C3446LTI-085
Infineon Technologies
1: $14.11
6In Stock

Mfr. Part No.
CY8C3446LTI-085

Mouser Part No
727-CY8C3446LTI-085

Infineon Technologies

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

Learn More

Datasheet

6In Stock

$14.11

$11.14

$10.39

$9.58

View

Min.: 1
Mult.: 1

8051

64 kB

8 kB

QFN-68

50 MHz

12 bit

48 I/O

1.71 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

CY8C3446

Tray

8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 5 V CAN 8-bit MCU

C8051F569-IM
Silicon Labs
1: $12.75
83In Stock
End of Life

Mfr. Part No.
C8051F569-IM

Mouser Part No
634-C8051F569-IM

End of Life

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 5 V CAN 8-bit MCU

Datasheet

83In Stock

$12.75

$10.36

$9.88

$8.58

View

Min.: 1
Mult.: 1

8051

32 kB

2.25 kB

QFN-40

50 MHz

12 bit

33 I/O

1.8 V

5.25 V

SMD/SMT

8 bit

- 40 C

+ 125 C

C8051F569

AEC-Q100

Tube

8-bit Microcontrollers - MCU eZ80AcclaimPlus! Connectivity ASSP Rev AC

EZ80F91AZA50EK
ZiLOG
1: $15.50
1,105In Stock

Mfr. Part No.
EZ80F91AZA50EK

Mouser Part No
692-EZ80F91AZA50EK

ZiLOG

8-bit Microcontrollers - MCU eZ80AcclaimPlus! Connectivity ASSP Rev AC

Datasheet

1,105In Stock

$15.50

$12.27

$10.87

$10.47

View

Min.: 1
Mult.: 1

eZ80

256 kB

8 kB

50 MHz

No ADC

32 I/O

3 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 105 C

EZ80F91

8-bit Microcontrollers - MCU eZ80AcclaimPlus! Connectivity ASSP Rev AB

EZ80F91AZ050EK
ZiLOG
1: $16.05
742In Stock

Mfr. Part No.
EZ80F91AZ050EK

Mouser Part No
692-EZ80F91AZ050EK

ZiLOG

8-bit Microcontrollers - MCU eZ80AcclaimPlus! Connectivity ASSP Rev AB

Datasheet

742In Stock

$16.05

$12.72

$11.27

$10.87

View

Min.: 1
Mult.: 1

eZ80

256 kB

8 kB

50 MHz

No ADC

32 I/O

3 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 105 C

8-bit Microcontrollers - MCU 8051 50 MHz 128 kB 8-bit MCU

C8051F125-GQ
Silicon Labs
1: $38.69
800Expected 17/07/2026
End of Life

Mfr. Part No.
C8051F125-GQ

Mouser Part No
634-C8051F125-GQ

End of Life

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 128 kB 8-bit MCU

Datasheet

800Expected 17/07/2026

$38.69

$32.43

$30.58

$27.86

View

Min.: 1
Mult.: 1

8051

128 kB

8.25 kB

TQFP-64

50 MHz

12 bit

32 I/O

2.7 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 85 C

C8051F125

Tray

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

EFM8BB22F16G-C-QFN28R
Silicon Labs
1: $1.68
2,999Expected 24/07/2026

Mfr. Part No.
EFM8BB22F16G-C-QFN28R

Mouser Part No
634-8BB22F16GCQFN28R

Silicon Labs

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

Learn More

Datasheet

2,999Expected 24/07/2026

Cut Tape

$1.68

$1.42

$1.31

$1.18

Reel

$0.941

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

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

+ 85 C

EFM8BB2

Reel, Cut Tape, MouseReel

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: $3.19
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

$3.19

$2.08

$1.91

$1.64

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 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

EFM8BB31F32I-D-QFP32
Silicon Labs
1: $3.89
1,248Expected 22/05/2026
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 22/05/2026

$3.89

$2.57

$2.35

$1.99

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 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU

EFM8BB50F16G-A-QFN16R
Silicon Labs
1: $2.01
1,000Expected 26/06/2026

Mfr. Part No.
EFM8BB50F16G-A-QFN16R

Mouser Part No
634-M8BB50F16GAFN16R

Silicon Labs

8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU

Learn More

Datasheet

1,000Expected 26/06/2026

Cut Tape

$2.01

$1.23

$0.782

$0.677

View

Reel

$0.414

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

16 kB

512 B

QFN-16

50 MHz

12 bit

12 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

BB50

Reel, Cut Tape, MouseReel

8-bit Microcontrollers - MCU 8KB,24ADC,28Pin MCU

C8051F351-GM
Silicon Labs
1,533: $8.32
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
C8051F351-GM

Mouser Part No
634-C8051F351-GM

Silicon Labs

8-bit Microcontrollers - MCU 8KB,24ADC,28Pin MCU

Datasheet

Non-Stocked Lead-Time 12 Weeks

$8.32

Quote

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

8051

8 kB

768 B

QFN-28

50 MHz

24 bit

17 I/O

2.7 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 85 C

C8051F351

Tube

8-bit Microcontrollers - MCU FS70AB037A - Repl for Intel 80C188EB

IA188EBPLC84IR2
Analog Devices
1: $132.67
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
IA188EBPLC84IR2

Mouser Part No
584-IA188EBPLC84IR2

Analog Devices

8-bit Microcontrollers - MCU FS70AB037A - Repl for Intel 80C188EB

Datasheet

Non-Stocked Lead-Time 10 Weeks

$132.67

$111.70

$108.13

Min.: 1
Mult.: 1

80C188

0 B

PLCC-84

50 MHz

No ADC

16 I/O

4.5 V

5.5 V

SMD/SMT

8 bit/16 bit

- 40 C

+ 85 C

IA186EB, IA188EB

Tube

8-bit Microcontrollers - MCU 8051 50 MHz 16 kB LFO 8-bit MCU

C8051F391-A-GM
Silicon Labs
1,911: $2.14
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
C8051F391-A-GM

Mouser Part No
634-C8051F391-A-GM

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 16 kB LFO 8-bit MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$2.14

$2.09

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

8051

16 kB

1 kB

QFN-24

50 MHz

1.8 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 105 C

C8051F391

Tube

8-bit Microcontrollers - MCU 8051 50 MHz 16 kB LFO 8-bit MCU

C8051F394-A-GM
Silicon Labs
1,911: $1.91
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
C8051F394-A-GM

Mouser Part No
634-C8051F394-A-GM

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 16 kB LFO 8-bit MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$1.91

$1.85

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

8051

8 kB

1 kB

QFN-24

50 MHz

10 bit

21 I/O

1.8 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 105 C

C8051F394

Tube

8-bit Microcontrollers - MCU 8kB/1kB RAM, 10b ADC, 10b 2xDAC, QFN24

C8051F394-A-GMR
Silicon Labs
1,500: $2.04
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
C8051F394-A-GMR

Mouser Part No
634-C8051F394-A-GMR

Silicon Labs

8-bit Microcontrollers - MCU 8kB/1kB RAM, 10b ADC, 10b 2xDAC, QFN24

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$2.04

$1.99

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

: 1,500

8051

8 kB

1 kB

50 MHz

10 bit

21 I/O

1.8 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 105 C

C8051F394

Reel

8-bit Microcontrollers - MCU 8051 50 MHz 8 kB LFO 8-bit MCU

C8051F395-A-GM
Silicon Labs
1,911: $1.90
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
C8051F395-A-GM

Mouser Part No
634-C8051F395-A-GM

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 8 kB LFO 8-bit MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$1.90

$1.84

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

8051

8 kB

1 kB

QFN-24

50 MHz

1.8 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 105 C

C8051F395

Tube

8-bit Microcontrollers - MCU 8051 50 MHz 8 kB LFO 8-bit MCU

C8051F396-A-GM
Silicon Labs
1,911: $1.85
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
C8051F396-A-GM

Mouser Part No
634-C8051F396-A-GM

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 8 kB LFO 8-bit MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$1.85

$1.79

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

8051

8 kB

1 kB

QFN-20

50 MHz

10 bit

17 I/O

1.8 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 105 C

C8051F396

Tube

8-bit Microcontrollers - MCU 8051 50 MHz 8 kB LFO 8-bit MCU

C8051F397-A-GM
Silicon Labs
1,911: $1.89
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
C8051F397-A-GM

Mouser Part No
634-C8051F397-A-GM

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 8 kB LFO 8-bit MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$1.89

$1.83

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

8051

8 kB

1 kB

QFN-20

50 MHz

1.8 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 105 C

C8051F397

Tube

8-bit Microcontrollers - MCU 8051 50 MHz 8 kB LFO 8-bit MCU

C8051F398-A-GM
Silicon Labs
1,911: $1.72
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
C8051F398-A-GM

Mouser Part No
634-C8051F398-A-GM

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 8 kB LFO 8-bit MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$1.72

$1.66

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

8051

4 kB

1 kB

QFN-20

50 MHz

10 bit

17 I/O

1.8 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 105 C

C8051F398

Tube

8-bit Microcontrollers - MCU 8051 50 MHz 4 kB LFO 8-bit MCU

C8051F399-A-GM
Silicon Labs
1,911: $1.56
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
C8051F399-A-GM

Mouser Part No
634-C8051F399-A-GM

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 4 kB LFO 8-bit MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$1.56

$1.51

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

8051

4 kB

1 kB

QFN-20

50 MHz

1.8 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 105 C

C8051F399

Tube

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: $4.70
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

Cut Tape

$4.70

$3.11

$2.83

$2.41

Reel

$1.73

View

Min.: 1
Mult.: 1

: 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, Cut Tape

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: $1.73
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

$1.73

$1.68

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: $1.91
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

$1.91

$1.87

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: $1.91
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

$1.91

$1.86

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

50 MHz 8-bit Microcontrollers - MCU

Customer Service Office

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9 I/O
12 I/O
13 I/O
16 I/O
17 I/O
18 I/O
20 I/O
21 I/O
22 I/O
25 I/O
28 I/O
29 I/O
31 I/O
32 I/O
33 I/O
40 I/O
46 I/O
48 I/O
64 I/O
70 I/O

BB50
C8051F124
C8051F125
C8051F126
C8051F127
C8051F351
C8051F353
C8051F390
C8051F391
C8051F392
C8051F394
C8051F395
C8051F396
C8051F397
C8051F398
C8051F399
C8051F411
C8051F413
C8051F500
C8051F501