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634-EFM8 Semiconductors

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Part #

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

EFM8BB52F16G-C-TSSOP28
Silicon Labs
1: ¥181
8,238In Stock

Mfr. Part #
EFM8BB52F16G-C-TSSOP28

Mouser Part #
634-EFM852F16GTSOP28

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

8,238In Stock

¥181

¥129.7

¥116.8

¥102.6

View

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU 8051 48 MHz 32 kB flash 2 kB RAM 8-bit Universal Bee MCU

EFM8UB20F32G-B-QFN32R
Silicon Labs
1: ¥541.5
10,557In Stock

Mfr. Part #
EFM8UB20F32G-B-QFN32R

Mouser Part #
634-EFM8UB32GBQFN32R

Silicon Labs

8-bit Microcontrollers - MCU 8051 48 MHz 32 kB flash 2 kB RAM 8-bit Universal Bee MCU

Datasheet

10,557In Stock

Cut Tape

¥541.5

¥403.6

¥368.7

¥330.5

Reel

¥280.7

View

Min.: 1
Mult.: 1

: 1,500

8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 16 GPIO BB5 8-bit MCU

EFM8BB52F32I-C-QFN20R
Silicon Labs
1: ¥171.1
Non-Stocked Lead-Time 24 Weeks

Mfr. Part #
EFM8BB52F32I-C-QFN20R

Mouser Part #
634-EFM852F32IQFN20R

Silicon Labs

8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 16 GPIO BB5 8-bit MCU

Learn More

Datasheet

Non-Stocked Lead-Time 24 Weeks

Cut Tape

¥171.1

¥122.2

¥110.1

¥96.8

Reel

¥80.1

View

Min.: 1
Mult.: 1

: 2,500

8-bit Microcontrollers - MCU 8051 25 MHz 32 kB flash 4 kB RAM 8-bit Sleepy Bee MCU

EFM8SB20F32G-B-QFN24R
Silicon Labs
1: ¥601.3
865In Stock

Mfr. Part #
EFM8SB20F32G-B-QFN24R

Mouser Part #
634-EFM8SB32GBQFN24R

Silicon Labs

8-bit Microcontrollers - MCU 8051 25 MHz 32 kB flash 4 kB RAM 8-bit Sleepy Bee MCU

Learn More

Datasheet

865In Stock

Cut Tape

¥601.3

¥367.1

¥317.3

¥297.3

Reel

¥209.3

View

Min.: 1
Mult.: 1

: 1,500

8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU

EFM8BB10F2I-A-QFN20
Silicon Labs
1: ¥159.5
3,158In Stock

Mfr. Part #
EFM8BB10F2I-A-QFN20

Mouser Part #
634-EFM8BB10F2IAFN20

Silicon Labs

8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU

Learn More

Datasheet

3,158In Stock

¥159.5

¥122.2

¥110.1

¥96.8

View

Min.: 1
Mult.: 1

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

EFM8BB51F8G-C-QFN20R
Silicon Labs
1: ¥152.8
9,875In Stock

Mfr. Part #
EFM8BB51F8G-C-QFN20R

Mouser Part #
634-EFM851F8GCQFN20R

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

9,875In Stock

Cut Tape

¥152.8

¥107.5

¥96.3

¥84.2

Reel

¥68.8

View

Min.: 1
Mult.: 1

: 2,500

8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU

EFM8SB20F64G-B-QFN24R
Silicon Labs
1: ¥478.4
1,500In Stock

Mfr. Part #
EFM8SB20F64G-B-QFN24R

Mouser Part #
634-EFM8SB64GBQFN24R

Silicon Labs

8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU

Learn More

Datasheet

1,500In Stock

Cut Tape

¥478.4

¥357.1

¥325.6

¥292.3

Reel

¥247.5

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

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

EFM8BB52F16I-C-TSSOP28R
Silicon Labs
1: ¥332.2
2,435In Stock

Mfr. Part #
EFM8BB52F16I-C-TSSOP28R

Mouser Part #
634-EFM852F16ITOP28R

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

2,435In Stock

Cut Tape

¥332.2

¥212.6

¥189.4

¥155.3

Reel

¥97.3

View

Min.: 1
Mult.: 1

: 2,500

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

EFM8BB51F8I-C-TSSOP20
Silicon Labs
1: ¥166.1
166In Stock

Mfr. Part #
EFM8BB51F8I-C-TSSOP20

Mouser Part #
634-EFM851F8ICTSOP20

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

166In Stock

¥166.1

¥118.6

¥114.1

¥96.5

View

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU 8051 48 MHz 32 kB flash 2 kB RAM 8-bit Universal Bee MCU

EFM8UB20F32G-B-QFN32
Silicon Labs
1: ¥529.9
587In Stock

Mfr. Part #
EFM8UB20F32G-B-QFN32

Mouser Part #
634-EFM8UBF32GBQFN32

Silicon Labs

8-bit Microcontrollers - MCU 8051 48 MHz 32 kB flash 2 kB RAM 8-bit Universal Bee MCU

Datasheet

587In Stock

¥529.9

¥403.6

¥368.7

¥330.5

View

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU

EFM8SB20F64G-B-QFN24
Silicon Labs
1: ¥471.7
2,683In Stock

Mfr. Part #
EFM8SB20F64G-B-QFN24

Mouser Part #
634-EFM8SBF64GBQFN24

Silicon Labs

8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU

Learn More

Datasheet

2,683In Stock

¥471.7

¥357.1

¥325.6

¥292.3

View

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 29 GPIO BB5 8-bit MCU

EFM8BB52F32I-C-QFN32R
Silicon Labs
1: ¥176.1
11,485In Stock

Mfr. Part #
EFM8BB52F32I-C-QFN32R

Mouser Part #
634-EFM852F32IQFN32R

Silicon Labs

8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 29 GPIO BB5 8-bit MCU

Learn More

Datasheet

11,485In Stock

Cut Tape

¥176.1

¥126.1

¥113.4

¥99.8

Reel

¥82.6

View

Min.: 1
Mult.: 1

: 2,500

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

EFM8BB52F16G-C-QFN20
Silicon Labs
1: ¥152.8
236In Stock

Mfr. Part #
EFM8BB52F16G-C-QFN20

Mouser Part #
634-EFM852F16GCQFN20

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

236In Stock

¥152.8

¥121.8

¥86.7

¥82.9

View

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU 8051 48 MHz 64 kB flash 4 kB RAM 8-bit Universal Bee MCU

EFM8UB20F64G-B-QFP48R
Silicon Labs
1: ¥687.7
63In Stock
End of Life

Mfr. Part #
EFM8UB20F64G-B-QFP48R

Mouser Part #
634-EFM8UB64GBQFP48R

End of Life

Silicon Labs

8-bit Microcontrollers - MCU 8051 48 MHz 64 kB flash 4 kB RAM 8-bit Universal Bee MCU

Datasheet

63In Stock

Cut Tape

¥687.7

¥604.6

¥591.3

¥514.9

¥503.3

Reel

¥430.2

MouseReel Available

Min.: 1
Mult.: 1

: 500

8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU

EFM8SB20F64G-B-QFN32
Silicon Labs
1: ¥747.5
1,111In Stock
End of Life

Mfr. Part #
EFM8SB20F64G-B-QFN32

Mouser Part #
634-EFM8SBF64GBQFN32

End of Life

Silicon Labs

8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU

Learn More

Datasheet

1,111In Stock

¥747.5

¥495

¥418.6

¥383.7

View

Min.: 1
Mult.: 1

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

EFM8BB52F16G-C-QFN32
Silicon Labs
1: ¥156.1
1,899In Stock
800On Order

Mfr. Part #
EFM8BB52F16G-C-QFN32

Mouser Part #
634-EFM852F16GCQFN32

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

1,899In Stock

800On Order

¥156.1

¥134.4

¥112.8

¥107.6

View

Min.: 1
Mult.: 1

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

EFM8BB21F16A-C-QFN20
Silicon Labs
1: ¥538.2
463In Stock
2,520Expected 9/15/2026

Mfr. Part #
EFM8BB21F16A-C-QFN20

Mouser Part #
634-EFM8BB21F16FN20

Silicon Labs

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

Learn More

Datasheet

463In Stock

2,520Expected 9/15/2026

¥538.2

¥450.1

¥400.3

¥383.7

View

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 29 GPIO BB5 8-bit MCU

EFM8BB52F32I-C-QFN32
Silicon Labs
1: ¥199.3
606In Stock

Mfr. Part #
EFM8BB52F32I-C-QFN32

Mouser Part #
634-EFM852F32ICQFN32

Silicon Labs

8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 29 GPIO BB5 8-bit MCU

Learn More

Datasheet

606In Stock

¥199.3

¥169.4

¥148.7

¥132.9

View

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 29 GPIO BB5 8-bit MCU

EFM8BB52F32G-C-QFN32
Silicon Labs
1: ¥294
1,693In Stock

Mfr. Part #
EFM8BB52F32G-C-QFN32

Mouser Part #
634-EFM852F32GCQFN32

Silicon Labs

8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 29 GPIO BB5 8-bit MCU

Learn More

Datasheet

1,693In Stock

¥294

¥187.7

¥167.8

¥137.7

View

Min.: 1
Mult.: 1

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

EFM8BB51F16I-C-QFN20
Silicon Labs
1: ¥166.1
194In Stock

Mfr. Part #
EFM8BB51F16I-C-QFN20

Mouser Part #
634-EFM851F16ICQFN20

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

194In Stock

¥166.1

¥140.9

¥100.8

¥96.5

View

Min.: 1
Mult.: 1

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

EFM8BB52F16G-C-TSSOP20
Silicon Labs
1: ¥189.4
380In Stock

Mfr. Part #
EFM8BB52F16G-C-TSSOP20

Mouser Part #
634-EFM852F16GCTOP20

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

380In Stock

¥189.4

¥160.3

¥140.7

¥128.6

View

Min.: 1
Mult.: 1

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

EFM8BB51F16I-C-TSSOP20
Silicon Labs
1: ¥189.4
146In Stock

Mfr. Part #
EFM8BB51F16I-C-TSSOP20

Mouser Part #
634-EFM851F16TSSOP20

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

146In Stock

¥189.4

¥147.8

¥131.4

¥117.9

View

Min.: 1
Mult.: 1

Development Boards & Kits - 8051

EFM8BB1LCK
Silicon Labs
1: ¥3,371.8
4In Stock
42On Order

Mfr. Part #
EFM8BB1LCK

Mouser Part #
634-EFM8BB1LCK

Silicon Labs

Development Boards & Kits - 8051

Learn More

Datasheet

4In Stock

42On Order

¥3,371.8

Quote

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU 8051 48 MHz 64 kB flash 4 kB RAM 8-bit Universal Bee MCU

EFM8UB20F64G-B-QFN32
Silicon Labs
1: ¥606.3
325In Stock

Mfr. Part #
EFM8UB20F64G-B-QFN32

Mouser Part #
634-EFM8UBF64GBQFN32

Silicon Labs

8-bit Microcontrollers - MCU 8051 48 MHz 64 kB flash 4 kB RAM 8-bit Universal Bee MCU

Datasheet

325In Stock

¥606.3

¥485

¥428.5

¥395.3

View

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU 8051 48 MHz 64 kB flash 4 kB RAM 8-bit Universal Bee MCU

EFM8UB20F64G-B-QFN32R
Silicon Labs
1: ¥647.8
163In Stock

Mfr. Part #
EFM8UB20F64G-B-QFN32R

Mouser Part #
634-EFM8UB64GBQFN32R

Silicon Labs

8-bit Microcontrollers - MCU 8051 48 MHz 64 kB flash 4 kB RAM 8-bit Universal Bee MCU

Datasheet

163In Stock

Cut Tape

¥647.8

¥503.3

¥448.5

¥413.6

Reel

¥348.8

View

Min.: 1
Mult.: 1

: 1,500