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Silicon Labs Microcontrollers - MCU

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Part #

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

EFM8SB10F8G-A-CSP16
Silicon Labs
1: $1.86
1,669In Stock

Mfr. Part No.
EFM8SB10F8G-A-CSP16

Mouser Part No
634-8SB10F8G-A-CSP16

Silicon Labs

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

Learn More

Datasheet

1,669In Stock

$1.86

$1.57

$1.38

$1.24

View

Min.: 1
Mult.: 1

SMD/SMT

CSP-16

CIP-51 8051

8 kB

8 bit

12 bit

25 MHz

13 I/O

512 B

1.8 V

3.6 V

- 40 C

+ 85 C

Cut Tape

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

EFM8SB10F8G-A-CSP16R
Silicon Labs
1: $1.96
2,678In Stock
7,500On Order

Mfr. Part No.
EFM8SB10F8G-A-CSP16R

Mouser Part No
634-8SB10F8GA-CSP16R

Silicon Labs

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

Datasheet

2,678In Stock

7,500On Order

Cut Tape

$1.96

$1.62

$1.40

$1.32

Reel

$1.00

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

SMD/SMT

CSP-16

CIP-51 8051

8 kB

8 bit

12 bit

25 MHz

13 I/O

256 B

3.6 V

2.2 V

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU

EFM8UB10F16G-C-QFN28R
Silicon Labs
1: $2.71
4,493In Stock

Mfr. Part No.
EFM8UB10F16G-C-QFN28R

Mouser Part No
634-8UB10F16GCQFN28R

Silicon Labs

8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU

Datasheet

4,493In Stock

Cut Tape

$2.71

$2.28

$2.00

$1.89

Reel

$1.30

View

Min.: 1
Mult.: 1

: 1,500

SMD/SMT

QFN-28

CIP-51 8051

16 kB

8 bit

12 bit

50 MHz

22 I/O

2.25 kB

2.2 V

3.6 V

- 40 C

+ 85 C

Reel, Cut Tape

8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 2 kB RAM 8-bit Universal Bee MCU

EFM8UB10F8G-C-QFN20
Silicon Labs
1: $1.78
2,547In Stock
5,040Expected 11/09/2026

Mfr. Part No.
EFM8UB10F8G-C-QFN20

Mouser Part No
634-8UB10F8GCQFN20

Silicon Labs

8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 2 kB RAM 8-bit Universal Bee MCU

Datasheet

2,547In Stock

5,040Expected 11/09/2026

$1.78

$1.51

$1.32

$1.23

View

Min.: 1
Mult.: 1

SMD/SMT

QFN-20

CIP-51 8051

8 kB

8 bit

12 bit

50 MHz

13 I/O

2.25 kB

2.2 V

3.6 V

- 40 C

+ 85 C

Tube

ARM Microcontrollers - MCU ARM Cortex-M4 32-bit 72 MHz 2048 kB MCU

EFM32GG11B120F2048GQ64-B
Silicon Labs
1: $19.85
1,061In Stock

Mfr. Part No.
EFM32GG11B120F2048GQ64-B

Mouser Part No
634-B120F2048GQ64-B

Silicon Labs

ARM Microcontrollers - MCU ARM Cortex-M4 32-bit 72 MHz 2048 kB MCU

Learn More

Datasheet

1,061In Stock

$19.85

$16.49

$14.83

$14.12

View

Min.: 1
Mult.: 1

SMD/SMT

QFP-64

ARM Cortex M4

2.05 MB

32 bit

12 bit

72 MHz

53 I/O

512 kB

1.8 V

3.8 V

- 40 C

+ 85 C

Tray

ARM Microcontrollers - MCU ARM Cortex-M4 32-bit 72 MHz 2048 kB USB LCD MCU

EFM32GG11B820F2048GL120-B
Silicon Labs
1: $22.32
218In Stock

Mfr. Part No.
EFM32GG11B820F2048GL120-B

Mouser Part No
634-B820F2048GL120-B

Silicon Labs

ARM Microcontrollers - MCU ARM Cortex-M4 32-bit 72 MHz 2048 kB USB LCD MCU

Learn More

Datasheet

218In Stock

$22.32

$18.27

$16.68

$15.58

View

Min.: 1
Mult.: 1

SMD/SMT

BGA-120

ARM Cortex M4

2.05 MB

32 bit

12 bit

72 MHz

95 I/O

512 kB

1.8 V

3.8 V

- 40 C

+ 85 C

Tray

ARM Microcontrollers - MCU ARM Cortex-M4 32-bit 72 MHz 2048 kB USB LCD MCU

EFM32GG11B820F2048GL192-B
Silicon Labs
1: $23.26
788In Stock

Mfr. Part No.
EFM32GG11B820F2048GL192-B

Mouser Part No
634-B820F2048GL192-B

Silicon Labs

ARM Microcontrollers - MCU ARM Cortex-M4 32-bit 72 MHz 2048 kB USB LCD MCU

Learn More

Datasheet

788In Stock

$23.26

$18.85

$17.37

$16.08

View

Min.: 1
Mult.: 1

SMD/SMT

BGA-192

ARM Cortex M4

2.05 MB

32 bit

12 bit

72 MHz

144 I/O

512 kB

1.8 V

3.8 V

- 40 C

+ 85 C

Tray

ARM Microcontrollers - MCU ARM Cortex-M4 32-bit 72 MHz 2048 kB USB LCD MCU

EFM32GG11B820F2048GQ64-B
Silicon Labs
1: $21.00
779In Stock

Mfr. Part No.
EFM32GG11B820F2048GQ64-B

Mouser Part No
634-B820F2048GQ64-B

Silicon Labs

ARM Microcontrollers - MCU ARM Cortex-M4 32-bit 72 MHz 2048 kB USB LCD MCU

Learn More

Datasheet

779In Stock

$21.00

$17.18

$15.71

$14.48

View

Min.: 1
Mult.: 1

SMD/SMT

QFP-64

ARM Cortex M4

2.05 MB

32 bit

12 bit

72 MHz

47 I/O

512 kB

1.8 V

3.8 V

- 40 C

+ 85 C

Tray

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

C8051F311-GMR
Silicon Labs
1: $13.08
685In Stock
3,000Expected 27/11/2026

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

685In Stock

3,000Expected 27/11/2026

Cut Tape

$13.08

$10.25

$9.45

$8.63

View

Reel

$7.07

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

SMD/SMT

QFN-28

8051

16 kB

8 bit

10 bit

25 MHz

25 I/O

1.25 kB

2.7 V

3.6 V

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

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

C8051F321-GM
Silicon Labs
1: $15.95
208In Stock
1,533Expected 27/11/2026

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 27/11/2026

$15.95

$12.67

$11.56

$10.65

View

Min.: 1
Mult.: 1

SMD/SMT

QFN-28

CIP-51 8051

16 kB

8 bit

10 bit

25 MHz

21 I/O

2.3 kB

2.7 V

3.6 V

- 40 C

+ 85 C

Tube

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

C8051F411-GM
Silicon Labs
1: $13.99
1,057In Stock
1,533Expected 20/11/2026

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

1,057In Stock

1,533Expected 20/11/2026

$13.99

$11.23

$10.40

$9.59

View

Min.: 1
Mult.: 1

SMD/SMT

QFN-28

8051

32 kB

8 bit

12 bit

50 MHz

20 I/O

2.31 kB

2 V

5.25 V

- 40 C

+ 85 C

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: $1.86
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

$1.86

$1.54

$1.33

$1.25

Reel

$0.945

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

SMD/SMT

QFN-32

CIP-51 8051

16 kB

8 bit

10 bit, 12 bit

50 MHz

29 I/O

2.3 kB

2.2 V

3.6 V

- 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: $3.33
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

$3.33

$2.19

$2.02

$1.76

Reel

$1.36

View

Min.: 1
Mult.: 1

: 1,500

SMD/SMT

QFN-24

CIP-51 8051

32 kB

8 bit

10 bit, 12 bit

50 MHz

20 I/O

2.3 kB

2.2 V

3.6 V

- 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: $3.67
2,120In 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

2,120In Stock

Cut Tape

$3.67

$2.48

$2.30

$2.00

Reel

$1.55

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

SMD/SMT

QFN-24

CIP-51 8051

64 kB

8 bit

10 bit, 12 bit

50 MHz

20 I/O

4.35 kB

2.2 V

3.6 V

- 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: $2.53
5,987In 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

5,987In Stock

$2.53

$2.13

$1.86

$1.74

View

Min.: 1
Mult.: 1

SMD/SMT

QFN-24

CIP-51 8051

64 kB

8 bit

10 bit, 12 bit

50 MHz

20 I/O

4.35 kB

2.2 V

3.6 V

- 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: $4.03
995In Stock
1,500Expected 30/11/2026

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

1,500Expected 30/11/2026

Cut Tape

$4.03

$2.67

$2.43

$2.06

Reel

$1.52

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

SMD/SMT

QFN-24

CIP-51 8051

64 kB

8 bit

10 bit, 12 bit

50 MHz

20 I/O

4.35 kB

2.2 V

3.6 V

- 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: $4.35
1,529In 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

1,529In Stock

$4.35

$2.88

$2.62

$2.23

View

Min.: 1
Mult.: 1

SMD/SMT

QFN-32

CIP-51 8051

64 kB

8 bit

10 bit, 12 bit

50 MHz

29 I/O

4.35 kB

2.2 V

3.6 V

- 40 C

+ 125 C

Tray

ARM Microcontrollers - MCU ARM Cortex-M0+ 48 MHz 128 kB flash 32 kB RAM MCU

EFM32TG11B120F128GQ48-BR
Silicon Labs
1: $6.96
860In Stock

Mfr. Part No.
EFM32TG11B120F128GQ48-BR

Mouser Part No
634-EFM32TG128GQ48BR

Silicon Labs

ARM Microcontrollers - MCU ARM Cortex-M0+ 48 MHz 128 kB flash 32 kB RAM MCU

Learn More

Datasheet

860In Stock

Cut Tape

$6.96

$4.79

$4.46

$3.92

Reel

$3.09

View

Min.: 1
Mult.: 1

: 1,000

SMD/SMT

QFP-48

ARM Cortex M0+

128 kB

32 bit

12 bit

48 MHz

37 I/O

32 kB

1.8 V

3.8 V

- 40 C

+ 85 C

Reel, Cut Tape

ARM Microcontrollers - MCU Tiny Gecko MCU IC

EFM32TG222F32-D-QFP48
Silicon Labs
1: $5.66
3,138In Stock

Mfr. Part No.
EFM32TG222F32-D-QFP48

Mouser Part No
634-EFM32TG222F32-D

Silicon Labs

ARM Microcontrollers - MCU Tiny Gecko MCU IC

Learn More

Datasheet

3,138In Stock

$5.66

$4.71

$4.15

$3.95

View

Min.: 1
Mult.: 1

SMD/SMT

TQFP-48

ARM Cortex M3

32 kB

32 bit

12 bit

32 MHz

37 I/O

4 kB

1.98 V

3.8 V

- 40 C

+ 85 C

Tray

ARM Microcontrollers - MCU ARM Cortex-M0+ 48 MHz 64 kB flash 32 kB RAM MCU

EFM32TG11B140F64GQ48-B
Silicon Labs
1: $6.58
1,021In Stock

Mfr. Part No.
EFM32TG11B140F64GQ48-B

Mouser Part No
634-EFM32TG64GQ48-B

Silicon Labs

ARM Microcontrollers - MCU ARM Cortex-M0+ 48 MHz 64 kB flash 32 kB RAM MCU

Learn More

Datasheet

1,021In Stock

$6.58

$4.83

$4.24

$3.96

View

Min.: 1
Mult.: 1

SMD/SMT

QFP-48

ARM Cortex M0+

64 kB

32 bit

12 bit

48 MHz

37 I/O

32 kB

1.8 V

3.8 V

- 40 C

+ 85 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: $1.11
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

$1.11

$0.946

$0.83

$0.762

Reel

$0.538

View

Min.: 1
Mult.: 1

: 2,500

SMD/SMT

QFN-20

16 kB

16 I/O

1.28 kB

1.8 V

5.5 V

- 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: $4.08
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

$4.08

$2.70

$2.46

$2.09

Reel

$1.59

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

SMD/SMT

QFN-24

CIP-51 8051

32 kB

8 bit

10 bit/12 bit/14 bit

72 MHz

20 I/O

2.25 kB

2.2 V

3.6 V

- 40 C

+ 105 C

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: $3.46
4,089In 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

4,089In Stock

Cut Tape

$3.46

$2.83

$2.45

$2.32

Reel

$1.83

View

Min.: 1
Mult.: 1

: 1,500

SMD/SMT

QFN-24

CIP-51 8051

64 kB

8 bit

10 bit/12 bit/14 bit

72 MHz

20 I/O

4.25 kB

2.2 V

3.6 V

- 40 C

+ 105 C

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: $3.62
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

$3.62

$3.03

$2.66

$2.52

View

Min.: 1
Mult.: 1

SMD/SMT

QFN-32

CIP-51 8051

64 kB

8 bit

10 bit/12 bit/14 bit

72 MHz

29 I/O

4.25 kB

2.2 V

3.6 V

- 40 C

+ 105 C

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: $3.58
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

$3.58

$2.93

$2.54

$2.40

Reel

$1.81

View

Min.: 1
Mult.: 1

: 2,500

SMD/SMT

QFN-32

CIP-51 8051

64 kB

8 bit

10 bit/12 bit/14 bit

72 MHz

29 I/O

4.25 kB

2.2 V

3.6 V

- 40 C

+ 105 C

Reel, Cut Tape

Silicon Labs Microcontrollers - MCU

Types of Microcontrollers - MCU

Customer Service Office

Company

Resources

Support

BGA-112
BGA-120
BGA-125
BGA-136
BGA-152
BGA-192
BGA-48
CSP-16
CSP-81
LGA-92
LQFP-100
LQFP-32
PQFP-48
QFN-11
QFN-12
QFN-16
QFN-20
QFN-24
QFN-28
QFN-32

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
26 I/O
28 I/O
29 I/O
32 I/O
33 I/O
34 I/O

128 B
256 B
512 B
768 B
1 kB
1.25 kB
1.28 kB
1.54 kB
2 kB
2.25 kB
2.3 kB
2.31 kB
4 kB
4.25 kB
4.35 kB
8 kB
8.25 kB
16 kB
32 kB
64 kB