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Silicon Labs 8-bit Microcontrollers - MCU

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Part #

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

C8051F311-GMR
Silicon Labs
1: Rp229.508
860In Stock
3.000Expected 18/12/2026

Mfr. Part No.
C8051F311-GMR

Mouser Part No
634-C8051F311-GMR

Silicon Labs

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

Datasheet

860In Stock

3.000Expected 18/12/2026

Cut Tape

Rp229.508

Rp186.579

Rp172.819

Rp156.308

View

Reel

Rp132.642

MouseReel Available

Min.: 1
Mult.: 1

: 1.500

8051

16 kB

1.25 kB

QFN-28

25 MHz

10 bit

25 I/O

2.7 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 85 C

C8051F311

Reel, Cut Tape, MouseReel

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

C8051F321-GM
Silicon Labs
1: Rp278.309
208In Stock
1.533Expected 04/12/2026

Mfr. Part No.
C8051F321-GM

Mouser Part No
634-C8051F321-GM

Silicon Labs

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

Datasheet

208In Stock

1.533Expected 04/12/2026

Rp278.309

Rp227.307

Rp201.072

Rp190.982

View

Min.: 1
Mult.: 1

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

Tube

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

C8051F336-GMR
Silicon Labs
1: Rp211.713
1.458In Stock

Mfr. Part No.
C8051F336-GMR

Mouser Part No
634-C8051F336-GMR

Silicon Labs

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

Datasheet

1.458In Stock

Cut Tape

Rp211.713

Rp172.085

Rp159.427

Rp144.016

View

Reel

Rp120.350

MouseReel Available

Min.: 1
Mult.: 1

: 1.500

8051

16 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

C8051F336

Reel, Cut Tape, MouseReel

8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 8-bit MCU

C8051F411-GM
Silicon Labs
1: Rp257.211
1.108In Stock
1.533Expected 18/12/2026

Mfr. Part No.
C8051F411-GM

Mouser Part No
634-C8051F411-GM

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 8-bit MCU

Datasheet

1.108In Stock

1.533Expected 18/12/2026

Rp257.211

Rp212.080

Rp185.478

Rp177.956

View

Min.: 1
Mult.: 1

8051

32 kB

2.31 kB

QFN-28

50 MHz

12 bit

20 I/O

2 V

5.25 V

SMD/SMT

8 bit

- 40 C

+ 85 C

C8051F411

Tube

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

EFM8BB31F16G-D-QFN32R
Silicon Labs
1: Rp34.124
4.177In Stock

Mfr. Part No.
EFM8BB31F16G-D-QFN32R

Mouser Part No
634-EF8BB31F16GDN32R

Silicon Labs

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

Learn More

Datasheet

4.177In Stock

Cut Tape

Rp34.124

Rp28.253

Rp25.868

Rp22.933

Reel

Rp17.025

View

MouseReel Available

Min.: 1
Mult.: 1

: 2.500

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

+ 85 C

Reel, Cut Tape, MouseReel

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

EFM8BB31F32I-D-4QFN24R
Silicon Labs
1: Rp61.092
1.520In Stock

Mfr. Part No.
EFM8BB31F32I-D-4QFN24R

Mouser Part No
634-EF8BB31F32ID424R

Silicon Labs

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

Learn More

Datasheet

1.520In Stock

Cut Tape

Rp61.092

Rp40.178

Rp37.059

Rp32.289

Reel

Rp24.951

View

Min.: 1
Mult.: 1

: 1.500

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

+ 125 C

Reel, Cut Tape

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

EFM8BB31F64G-D-QFN24R
Silicon Labs
1: Rp67.330
2.270In Stock

Mfr. Part No.
EFM8BB31F64G-D-QFN24R

Mouser Part No
634-EF8BB31F64GDF24R

Silicon Labs

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

Learn More

Datasheet

2.270In Stock

Cut Tape

Rp67.330

Rp45.498

Rp42.196

Rp36.692

Reel

Rp28.436

View

MouseReel Available

Min.: 1
Mult.: 1

: 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

+ 85 C

Reel, Cut Tape, MouseReel

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

EFM8BB31F64G-D-QFN24
Silicon Labs
1: Rp44.764
6.187In Stock

Mfr. Part No.
EFM8BB31F64G-D-QFN24

Mouser Part No
634-EF8BB31F64GDQF24

Silicon Labs

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

Learn More

Datasheet

6.187In Stock

Rp44.764

Rp37.609

Rp34.857

Rp30.821

View

Min.: 1
Mult.: 1

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

+ 85 C

Tube

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

EFM8BB31F64I-D-4QFN24R
Silicon Labs
1: Rp73.934
995In Stock

Mfr. Part No.
EFM8BB31F64I-D-4QFN24R

Mouser Part No
634-EF8BB31F64ID424R

Silicon Labs

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

Learn More

Datasheet

995In Stock

Cut Tape

Rp73.934

Rp48.984

Rp44.581

Rp37.793

Reel

Rp27.886

View

MouseReel Available

Min.: 1
Mult.: 1

: 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, Cut Tape, MouseReel

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

EFM8BB31F64I-D-QFN32
Silicon Labs
1: Rp79.805
1.599In Stock

Mfr. Part No.
EFM8BB31F64I-D-QFN32

Mouser Part No
634-EF8BB31F64IDQN32

Silicon Labs

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

Learn More

Datasheet

1.599In Stock

Rp79.805

Rp52.836

Rp48.067

Rp40.912

View

Min.: 1
Mult.: 1

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

Tray

8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU

EFM8BB51F16I-C-QFN20R
Silicon Labs
1: Rp20.364
12.398In Stock

Mfr. Part No.
EFM8BB51F16I-C-QFN20R

Mouser Part No
634-EFM851F16IQFN20R

Silicon Labs

8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU

Learn More

Datasheet

12.398In Stock

Cut Tape

Rp20.364

Rp17.355

Rp16.126

Rp14.383

View

Reel

Rp9.833

Min.: 1
Mult.: 1

: 2.500

16 kB

1.28 kB

QFN-20

16 I/O

1.8 V

5.5 V

SMD/SMT

- 40 C

+ 85 C

Reel, Cut Tape

8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU

EFM8LB12F32E-C-QFN24R
Silicon Labs
1: Rp74.852
980In Stock

Mfr. Part No.
EFM8LB12F32E-C-QFN24R

Mouser Part No
634-LB12F32ECQFN24R

Silicon Labs

8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU

Learn More

Datasheet

980In Stock

Cut Tape

Rp74.852

Rp49.534

Rp45.131

Rp38.343

Reel

Rp29.170

View

MouseReel Available

Min.: 1
Mult.: 1

: 1.500

CIP-51 8051

32 kB

2.25 kB

QFN-24

72 MHz

10 bit/12 bit/14 bit

20 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 105 C

EFM8LB1

Reel, Cut Tape, MouseReel

8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU

EFM8LB12F64E-C-QFN24R
Silicon Labs
1: Rp63.477
4.091In Stock

Mfr. Part No.
EFM8LB12F64E-C-QFN24R

Mouser Part No
634-LB12F64ECQFN24R

Silicon Labs

8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU

Learn More

Datasheet

4.091In Stock

Cut Tape

Rp63.477

Rp51.919

Rp47.883

Rp42.563

Reel

Rp32.839

View

Min.: 1
Mult.: 1

: 1.500

CIP-51 8051

64 kB

4.25 kB

QFN-24

72 MHz

10 bit/12 bit/14 bit

20 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 105 C

EFM8LB1

Reel, Cut Tape

8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU

EFM8LB12F64E-C-QFN32
Silicon Labs
1: Rp60.358
2.603In Stock

Mfr. Part No.
EFM8LB12F64E-C-QFN32

Mouser Part No
634-LB12F64ECQFN32

Silicon Labs

8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU

Learn More

Datasheet

2.603In Stock

Rp60.358

Rp50.452

Rp46.782

Rp42.012

View

Min.: 1
Mult.: 1

CIP-51 8051

64 kB

4.25 kB

QFN-32

72 MHz

10 bit/12 bit/14 bit

29 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 105 C

EFM8LB1

Tray

8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU

EFM8LB12F64E-C-QFN32R
Silicon Labs
1: Rp65.679
4.062In Stock

Mfr. Part No.
EFM8LB12F64E-C-QFN32R

Mouser Part No
634-LB12F64ECQFN32R

Silicon Labs

8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU

Learn More

Datasheet

4.062In Stock

Cut Tape

Rp65.679

Rp53.754

Rp49.534

Rp44.030

Reel

Rp33.206

View

Min.: 1
Mult.: 1

: 2.500

CIP-51 8051

64 kB

4.25 kB

QFN-32

72 MHz

10 bit/12 bit/14 bit

29 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 105 C

EFM8LB1

Reel, Cut Tape

8-bit Microcontrollers - MCU 8051 25 MHz 4 kB Flash 0.5 kB RAM 8-bit Busy Bee MCU

EFM8BB10F4G-A-QFN20
Silicon Labs
1: Rp19.630
218In Stock

Mfr. Part No.
EFM8BB10F4G-A-QFN20

Mouser Part No
634-8BB10F4GAQF20

Silicon Labs

8-bit Microcontrollers - MCU 8051 25 MHz 4 kB Flash 0.5 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

218In Stock

Rp19.630

Rp16.732

Rp15.557

Rp12.567

View

Min.: 1
Mult.: 1

CIP-51 8051

4 kB

512 B

QFN-20

25 MHz

12 bit

16 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 85 C

EFM8BB1

Tube

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

EFM8BB10F8G-A-SOIC16
Silicon Labs
1: Rp20.548
1.572In Stock

Mfr. Part No.
EFM8BB10F8G-A-SOIC16

Mouser Part No
634-8BB10F8GASO16

Silicon Labs

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

Learn More

Datasheet

1.572In Stock

Rp20.548

Rp17.484

Rp15.392

Rp14.090

View

Min.: 1
Mult.: 1

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

+ 85 C

EFM8BB1

Tube

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

EFM8SB10F4G-A-QFN20
Silicon Labs
1: Rp43.297
23In Stock

Mfr. Part No.
EFM8SB10F4G-A-QFN20

Mouser Part No
634-8SB10F4GAQF20

Silicon Labs

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

Learn More

Datasheet

23In Stock

Rp43.297

Rp27.152

Rp24.767

Rp19.997

View

Min.: 1
Mult.: 1

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

Tube

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

C8051F340-GQ
Silicon Labs
1: Rp430.948
76In Stock
1.250Expected 25/08/2026

Mfr. Part No.
C8051F340-GQ

Mouser Part No
634-C8051F340-GQ

Silicon Labs

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

Datasheet

76In Stock

1.250Expected 25/08/2026

Rp430.948

Rp356.279

Rp336.466

Rp304.177

View

Min.: 1
Mult.: 1

8051

64 kB

4.25 kB

TQFP-48

48 MHz

10 bit

40 I/O

2.7 V

5.25 V

SMD/SMT

8 bit

- 40 C

+ 85 C

C8051F340

Tray

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

C8051F351-GMR
Silicon Labs
1: Rp303.626
97In Stock

Mfr. Part No.
C8051F351-GMR

Mouser Part No
634-C8051F351-GMR

Silicon Labs

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

Datasheet

97In Stock

Cut Tape

Rp303.626

Rp237.214

Rp218.317

Rp200.338

View

Reel

Rp164.747

Min.: 1
Mult.: 1

: 1.500

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

Reel, Cut Tape

8-bit Microcontrollers - MCU USB-Flash-64k-ADC-QFN32 OTP available (T626-GM)

C8051F381-GMR
Silicon Labs
1: Rp134.109
90In Stock

Mfr. Part No.
C8051F381-GMR

Mouser Part No
634-C8051F381-GMR

Silicon Labs

8-bit Microcontrollers - MCU USB-Flash-64k-ADC-QFN32 OTP available (T626-GM)

Datasheet

90In Stock

Cut Tape

Rp134.109

Rp108.975

Rp100.536

Rp90.262

View

Reel

Rp73.567

Min.: 1
Mult.: 1

: 1.500

8051

64 kB

4.25 kB

QFN-32

48 MHz

10 bit

25 I/O

2.7 V

5.25 V

SMD/SMT

8 bit

- 40 C

+ 85 C

C8051F381

Reel, Cut Tape

8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 8-bit MCU

C8051F383-GM
Silicon Labs
1: Rp105.856
21In Stock

Mfr. Part No.
C8051F383-GM

Mouser Part No
634-C8051F383-GM

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 8-bit MCU

Learn More

Datasheet

21In Stock

Rp105.856

Rp88.061

Rp75.402

Rp71.916

View

Min.: 1
Mult.: 1

8051

32 kB

2.25 kB

QFN-32

48 MHz

10 bit

25 I/O

2.7 V

5.25 V

SMD/SMT

8 bit

- 40 C

+ 85 C

C8051F383

Tube

8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 8-bit MCU

C8051F387-GM
Silicon Labs
1: Rp111.360
208In Stock

Mfr. Part No.
C8051F387-GM

Mouser Part No
634-C8051F387-GM

Silicon Labs

8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 8-bit MCU

Learn More

Datasheet

208In Stock

Rp111.360

Rp89.345

Rp78.521

Rp73.017

View

Min.: 1
Mult.: 1

8051

32 kB

2.3 kB

QFN-32

48 MHz

25 I/O

2.7 V

5.25 V

SMD/SMT

8 bit

- 40 C

+ 85 C

C8051F387

Tube

8-bit Microcontrollers - MCU 16kB/1kB RAM, 10b ADC, 10b 2xDAC, QFN24

C8051F390-A-GMR
Silicon Labs
1: Rp101.270
113In Stock

Mfr. Part No.
C8051F390-A-GMR

Mouser Part No
634-C8051F390-A-GMR

Silicon Labs

8-bit Microcontrollers - MCU 16kB/1kB RAM, 10b ADC, 10b 2xDAC, QFN24

Datasheet

113In Stock

Cut Tape

Rp101.270

Rp69.531

Rp64.761

Rp57.056

View

Reel

Rp41.829

MouseReel Available

Min.: 1
Mult.: 1

: 1.500

8051

16 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

C8051F390

Reel, Cut Tape, MouseReel

8-bit Microcontrollers - MCU 16kB/1kB RAM, 10b ADC, 10b 2xDAC, QFN20

C8051F392-A-GMR
Silicon Labs
1: Rp86.043
72In Stock

Mfr. Part No.
C8051F392-A-GMR

Mouser Part No
634-C8051F392-A-GMR

Silicon Labs

8-bit Microcontrollers - MCU 16kB/1kB RAM, 10b ADC, 10b 2xDAC, QFN20

Datasheet

72In Stock

Cut Tape

Rp86.043

Rp63.844

Rp57.240

Rp51.552

View

Reel

Rp40.361

MouseReel Available

Min.: 1
Mult.: 1

: 1.500

8051

16 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

C8051F392

Reel, Cut Tape, MouseReel

Silicon Labs 8-bit Microcontrollers - MCU

Customer Service Office

Company

Resources

Support

CSP-16
LQFP-32
PQFP-48
QFN-11
QFN-12
QFN-16
QFN-20
QFN-24
QFN-28
QFN-32
QFN-40
QFN-48
QFP-32
QFP-48
QSOP-24
SOIC-14
SOIC-16
TQFP-100
TQFP-48
TQFP-64

6 I/O
8 I/O
9 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
22 I/O
24 I/O
25 I/O
28 I/O
29 I/O
32 I/O
33 I/O
39 I/O
40 I/O

BB50
C8051F005
C8051F006
C8051F018
C8051F019
C8051F020
C8051F021
C8051F022
C8051F040
C8051F042
C8051F043
C8051F044
C8051F046
C8051F060
C8051F061
C8051F064
C8051F066
C8051F120
C8051F121
C8051F122