8-bit Microcontrollers - MCU

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

EFM8BB Busy Bee 8-Bit Microcontrollers

Silicon Labs EFM8 EFM8BB Busy Bee 8-Bit Microcontrollers provide state-of-the-art performance by integrating 12-bit ADC, internal temperature sensor, and up to two 12-bit DACs into small packages. Using an efficient, pipelined 8051 core with maximum operating frequency at 50MHz, various communication interfaces, and four channels of configurable logic, the Silicon Labs EFM8BB MCUs are well-suited for many embedded and general-purpose applications.

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

Results: 96

Applied Filters:

Core

Program Memory Size

Data RAM Size

Package / Case

Maximum Clock Frequency

ADC Resolution

Number of I/Os

Supply Voltage - Min

Supply Voltage - Max

Data Bus Width

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

EFM8BB31F32A-D-5QFN32
Silicon Labs
1.533: $2.240
Non-Stocked Lead-Time 16 Weeks

Mfr. Part #
EFM8BB31F32A-D-5QFN32

Mouser Part #
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 16 Weeks

$2.240

$2.188

$2.177

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: $3.429
Non-Stocked Lead-Time 16 Weeks

Mfr. Part #
EFM8BB31F32G-D-QFN32R

Mouser Part #
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 16 Weeks

Cut Tape

$3.429

$2.230

$2.051

$1.756

Reel

$1.230

View

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: $3.166
Non-Stocked Lead-Time 16 Weeks

Mfr. Part #
EFM8BB31F32G-D-QFN24

Mouser Part #
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 16 Weeks

$3.166

$2.061

$1.893

$1.620

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: $3.776
Non-Stocked Lead-Time 16 Weeks

Mfr. Part #
EFM8BB31F32G-D-QFP32

Mouser Part #
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 16 Weeks

$3.776

$2.556

$2.366

$2.051

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

+ 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: $2.461
Non-Stocked Lead-Time 16 Weeks

Mfr. Part #
EFM8BB31F64A-D-5QFN32R

Mouser Part #
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 16 Weeks

Reel

$2.461

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: $2.524
Non-Stocked Lead-Time 16 Weeks

Mfr. Part #
EFM8BB31F64A-D-5QFN32

Mouser Part #
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 16 Weeks

$2.524

$2.482

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: $1.588
Non-Stocked Lead-Time 16 Weeks

Mfr. Part #
EFM8BB31F64I-D-QFN24R

Mouser Part #
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 16 Weeks

Reel

$1.588

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-QFN24
Silicon Labs
1: $4.123
Non-Stocked Lead-Time 16 Weeks

Mfr. Part #
EFM8BB31F64I-D-QFN24

Mouser Part #
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 16 Weeks

$4.123

$2.724

$2.482

$2.103

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

+ 125 C

Tube

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

EFM8BB51F16I-C-TSSOP20R
Silicon Labs
2.500: $590
Non-Stocked Lead-Time 24 Weeks

Mfr. Part #
EFM8BB51F16I-C-TSSOP20R

Mouser Part #
634-EFM851F16TSOP20R

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

Non-Stocked Lead-Time 24 Weeks

Reel

$590

$581

Min.: 2.500
Mult.: 2.500

: 2.500

16 kB

1.28 kB

TSSOP-20

16 I/O

1.8 V

5.5 V

SMD/SMT

- 40 C

+ 85 C

Reel

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

EFM8BB51F8G-C-TSSOP20R
Silicon Labs
2.500: $523
Non-Stocked Lead-Time 24 Weeks

Mfr. Part #
EFM8BB51F8G-C-TSSOP20R

Mouser Part #
634-EFM851F8GCTOP20R

Silicon Labs

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

Learn More

Datasheet

Non-Stocked Lead-Time 24 Weeks

Reel

$523

$514

Min.: 2.500
Mult.: 2.500

: 2.500

16 kB

1.28 kB

TSSOP-20

16 I/O

1.8 V

5.5 V

SMD/SMT

- 40 C

+ 85 C

Reel

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

EFM8BB51F8I-C-QFN20R
Silicon Labs
1: $1.557
Non-Stocked Lead-Time 24 Weeks

Mfr. Part #
EFM8BB51F8I-C-QFN20R

Mouser Part #
634-EFM851F8ICQFN20R

Silicon Labs

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

Learn More

Datasheet

Non-Stocked Lead-Time 24 Weeks

Cut Tape

$1.557

$997

$890

$732

Reel

$506

View

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

EFM8BB51F8I-C-TSSOP20R
Silicon Labs
2.500: $538
Non-Stocked Lead-Time 24 Weeks

Mfr. Part #
EFM8BB51F8I-C-TSSOP20R

Mouser Part #
634-EFM851F8ICTOP20R

Silicon Labs

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

Learn More

Datasheet

Non-Stocked Lead-Time 24 Weeks

Reel

$538

$531

Min.: 2.500
Mult.: 2.500

: 2.500

16 kB

1.28 kB

TSSOP-20

16 I/O

1.8 V

5.5 V

SMD/SMT

- 40 C

+ 85 C

Reel

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

EFM8BB51F16G-C-TSSOP20R
Silicon Labs
1: $1.714
Non-Stocked Lead-Time 24 Weeks

Mfr. Part #
EFM8BB51F16G-C-TSSOP20R

Mouser Part #
634-EFM851GCTSSOP20R

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

Non-Stocked Lead-Time 24 Weeks

Cut Tape

$1.714

$1.094

$979

$806

Reel

$556

View

Min.: 1
Mult.: 1

: 2.500

16 kB

1.28 kB

TSSOP-20

16 I/O

1.8 V

5.5 V

SMD/SMT

- 40 C

+ 85 C

Reel, Cut Tape

8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 29 GPIO BB5 8-bit MCU

EFM8BB52F16G-C-QFN32R
Silicon Labs
1: $1.967
Non-Stocked Lead-Time 24 Weeks

Mfr. Part #
EFM8BB52F16G-C-QFN32R

Mouser Part #
634-EFM852F16GQFN32R

Silicon Labs

8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 29 GPIO BB5 8-bit MCU

Learn More

Datasheet

Non-Stocked Lead-Time 24 Weeks

Cut Tape

$1.967

$1.199

$1.009

$765

Reel

$471

View

Min.: 1
Mult.: 1

: 2.500

16 kB

1.28 kB

QFN-32

29 I/O

1.8 V

5.5 V

SMD/SMT

- 40 C

+ 85 C

Reel, Cut Tape

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

EFM8BB52F16G-C-TSSOP20R
Silicon Labs
2.500: $538
Non-Stocked Lead-Time 24 Weeks

Mfr. Part #
EFM8BB52F16G-C-TSSOP20R

Mouser Part #
634-EFM852F16GTOP20R

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

Non-Stocked Lead-Time 24 Weeks

Reel

$538

$531

Min.: 2.500
Mult.: 2.500

: 2.500

16 kB

1.28 kB

TSSOP-20

16 I/O

1.8 V

5.5 V

SMD/SMT

- 40 C

+ 85 C

Reel

8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 25 GPIO BB5 8-bit MCU

EFM8BB52F16G-C-TSSOP28R
Silicon Labs
2.500: $590
Non-Stocked Lead-Time 24 Weeks

Mfr. Part #
EFM8BB52F16G-C-TSSOP28R

Mouser Part #
634-EFM852F16GTOP28R

Silicon Labs

8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 25 GPIO BB5 8-bit MCU

Learn More

Datasheet

Non-Stocked Lead-Time 24 Weeks

Reel

$590

$581

Min.: 2.500
Mult.: 2.500

: 2.500

16 kB

1.28 kB

TSSOP-28

16 I/O

1.8 V

5.5 V

SMD/SMT

- 40 C

+ 85 C

Reel

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

EFM8BB51F8I-C-QFN20
Silicon Labs
1: $1.557
Non-Stocked Lead-Time 24 Weeks

Mfr. Part #
EFM8BB51F8I-C-QFN20

Mouser Part #
634-EFM8B51F8ICQFN20

Silicon Labs

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

Learn More

Datasheet

Non-Stocked Lead-Time 24 Weeks

$1.557

$997

$890

$732

View

Min.: 1
Mult.: 1

16 kB

1.28 kB

QFN-20

16 I/O

1.8 V

5.5 V

SMD/SMT

- 40 C

+ 85 C

Cut Tape

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

EFM8BB31F16G-D-QFP32R
Silicon Labs
1: $3.344
Non-Stocked Lead-Time 30 Weeks
End of Life

Mfr. Part #
EFM8BB31F16G-D-QFP32R

Mouser Part #
634-EF8BB31F16GDP32R

End of Life

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 30 Weeks

Cut Tape

$3.344

$2.177

$1.998

$1.714

$1.609

Reel

$1.357

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

+ 85 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-QFN24R
Silicon Labs
1: $2.997
Non-Stocked Lead-Time 29 Weeks
End of Life

Mfr. Part #
EFM8BB31F16I-D-QFN24R

Mouser Part #
634-EF8BB31F16IDF24R

End of Life

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 29 Weeks

Cut Tape

$2.997

$1.946

$1.767

$1.483

View

Reel

$1.115

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

EFM8BB31F32I-D-QFP32R
Silicon Labs
1: $4.081
Non-Stocked Lead-Time 30 Weeks
End of Life

Mfr. Part #
EFM8BB31F32I-D-QFP32R

Mouser Part #
634-EF8BB31F32IDP32R

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

Non-Stocked Lead-Time 30 Weeks

Cut Tape

$4.081

$2.692

$2.461

$2.082

$1.977

Reel

$1.746

Min.: 1
Mult.: 1

: 500

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

Reel, Cut Tape

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

EFM8BB10F4I-A-QFN20R
Silicon Labs
1: $2.230
Non-Stocked Lead-Time 30 Weeks
End of Life

Mfr. Part #
EFM8BB10F4I-A-QFN20R

Mouser Part #
634-M8BB10F4IAQFN20R

End of Life

Silicon Labs

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

Learn More

Datasheet

Non-Stocked Lead-Time 30 Weeks

Cut Tape

$2.230

$1.420

$1.273

$1.050

View

Reel

$729

Min.: 1
Mult.: 1

: 1.500

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

+ 125 C

EFM8BB1

Reel, Cut Tape

EFM8BB Busy Bee 8-Bit Microcontrollers

Customer Service Office

Company

Resources

Support