ARM Microcontrollers - MCU

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EFM32™ Wonder Gecko 32-bit Microcontrollers

Silicon Labs EFM32™ Wonder Gecko 32-bit Microcontrollers are MCUs based on the ARM® Cortex®-M4 core, which provides a full DSP instruction set and includes a hardware FPU for faster computation performance. Wonder Gecko MCUs feature up to 256kB of flash memory, 32kB of RAM and CPU speeds up to 48MHz. These MCUs incorporate highly differentiated Gecko technology to minimize energy consumption, including a flexible range of standby and sleep modes, intelligent peripherals that allow designers to implement many functions without CPU wake-up and ultra-low standby current. With the lowest active and standby power consumption, the Wonder Gecko is the world's most energy friendly Cortex-M4 MCU.

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Part #

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

EFM32WG380F256-B-QFP100
Silicon Labs
1: S/66.72
898Expected 7/30/2026

Mfr. Part #
EFM32WG380F256-B-QFP100

Mouser Part #
634-WG380F256BQFP100

Silicon Labs

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

Learn More

Datasheet

898Expected 7/30/2026

S/66.72

S/50.68

S/48.62

S/42.82

View

Min.: 1
Mult.: 1

EFM32WG

SMD/SMT

LQFP-100

ARM Cortex M4

256 kB

32 bit

12 bit

48 MHz

83 I/O

32 kB

1.98 V

3.8 V

- 40 C

+ 85 C

Tray

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

EFM32WG880F256-B-QFP100
Silicon Labs
1: S/61.15
78In Stock

Mfr. Part #
EFM32WG880F256-B-QFP100

Mouser Part #
634-WG880F256BQFP100

Silicon Labs

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

Learn More

Datasheet

78In Stock

S/61.15

S/46.44

S/44.53

S/39.24

View

Min.: 1
Mult.: 1

EFM32WG

SMD/SMT

LQFP-100

ARM Cortex M4

256 kB

32 bit

12 bit

48 MHz

85 I/O

32 kB

1.98 V

3.8 V

- 40 C

+ 85 C

Tray

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

EFM32WG280F256-B-QFP100
Silicon Labs
1: S/63.21
447Expected 7/30/2026

Mfr. Part #
EFM32WG280F256-B-QFP100

Mouser Part #
634-WG280F256BQFP100

Silicon Labs

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

Learn More

Datasheet

447Expected 7/30/2026

S/63.21

S/48.03

S/46.05

S/40.56

View

Min.: 1
Mult.: 1

EFM32WG

SMD/SMT

LQFP-100

ARM Cortex M4

256 kB

32 bit

12 bit

48 MHz

85 I/O

32 kB

1.98 V

3.8 V

- 40 C

+ 85 C

Tray

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

EFM32WG230F256-B-QFN64
Silicon Labs
1,300: S/28.42
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
EFM32WG230F256-B-QFN64

Mouser Part #
634-32WG230F256BQFN

Silicon Labs

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

S/28.42

Quote

Min.: 1,300
Mult.: 1,300

EFM32WG

SMD/SMT

QFN-64

ARM Cortex M4

256 kB

32 bit

12 bit

48 MHz

56 I/O

32 kB

1.98 V

3.8 V

- 40 C

+ 85 C

Tray

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

EFM32WG230F256-B-QFN64R
Silicon Labs
3,000: S/26.90
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
EFM32WG230F256-B-QFN64R

Mouser Part #
634-32WG230F256BQFR

Silicon Labs

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

S/26.90

Min.: 3,000
Mult.: 3,000

: 3,000

EFM32WG

SMD/SMT

QFN-64

ARM Cortex M4

256 kB

32 bit

12 bit

48 MHz

56 I/O

32 kB

1.98 V

3.8 V

- 40 C

+ 85 C

Reel

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

EFM32WG330F256-B-QFN64
Silicon Labs
1,300: S/30.17
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
EFM32WG330F256-B-QFN64

Mouser Part #
634-32WG330F256BQFN

Silicon Labs

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

S/30.17

Quote

Min.: 1,300
Mult.: 1,300

EFM32WG

SMD/SMT

QFN-64

ARM Cortex M4

256 kB

32 bit

12 bit

48 MHz

53 I/O

32 kB

1.98 V

3.8 V

- 40 C

+ 85 C

Tray

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

EFM32WG330F256-B-QFN64R
Silicon Labs
3,000: S/28.57
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
EFM32WG330F256-B-QFN64R

Mouser Part #
634-32WG330F256BQFR

Silicon Labs

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

S/28.57

Min.: 3,000
Mult.: 3,000

: 3,000

EFM32WG

SMD/SMT

QFN-64

ARM Cortex M4

256 kB

32 bit

12 bit

48 MHz

53 I/O

32 kB

1.98 V

3.8 V

- 40 C

+ 85 C

Reel

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

EFM32WG280F256-B-QFP100R
Silicon Labs
1,000: S/32.15
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
EFM32WG280F256-B-QFP100R

Mouser Part #
634-WG280256BQFP100R

Silicon Labs

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

S/32.15

Quote

Min.: 1,000
Mult.: 1,000

: 1,000

EFM32WG

SMD/SMT

LQFP-100

ARM Cortex M4

256 kB

32 bit

12 bit

48 MHz

86 I/O

32 kB

1.98 V

3.8 V

- 40 C

+ 85 C

Reel

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

EFM32WG380F256-B-QFP100R
Silicon Labs
1: S/61.77
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
EFM32WG380F256-B-QFP100R

Mouser Part #
634-WG380256BQFP100R

Silicon Labs

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

S/61.77

S/46.94

S/45.00

S/39.63

View

Reel

S/33.90

Min.: 1
Mult.: 1

: 1,000

EFM32WG

SMD/SMT

LQFP-100

ARM Cortex M4

256 kB

32 bit

12 bit

48 MHz

83 I/O

32 kB

1.98 V

3.8 V

- 40 C

+ 85 C

Reel, Cut Tape

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

EFM32WG880F256-B-QFP100R
Silicon Labs
1,000: S/33.51
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
EFM32WG880F256-B-QFP100R

Mouser Part #
634-WG880256BQFP100R

Silicon Labs

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

S/33.51

Quote

Min.: 1,000
Mult.: 1,000

: 1,000

EFM32WG

SMD/SMT

LQFP-100

ARM Cortex M4

256 kB

32 bit

12 bit

48 MHz

86 I/O

32 kB

1.98 V

3.8 V

- 40 C

+ 85 C

Reel

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

EFM32WG890F256-B-BGA112R
Silicon Labs
1,000: S/33.90
Non-Stocked Lead-Time 26 Weeks

Mfr. Part #
EFM32WG890F256-B-BGA112R

Mouser Part #
634-WG890256BBGA112R

Silicon Labs

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

Learn More

Datasheet

Non-Stocked Lead-Time 26 Weeks

Reel

S/33.90

Min.: 1,000
Mult.: 1,000

: 1,000

EFM32WG

SMD/SMT

BGA-112

ARM Cortex M4

256 kB

32 bit

12 bit

48 MHz

90 I/O

32 kB

1.98 V

3.8 V

- 40 C

+ 85 C

Reel

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

EFM32WG890F256-B-BGA112
Silicon Labs
840: S/35.27
Non-Stocked Lead-Time 26 Weeks

Mfr. Part #
EFM32WG890F256-B-BGA112

Mouser Part #
634-WG890F256BBGA112

Silicon Labs

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

Learn More

Datasheet

Non-Stocked Lead-Time 26 Weeks

S/35.27

Min.: 840
Mult.: 840

EFM32WG

SMD/SMT

BGA-112

ARM Cortex M4

256 kB

32 bit

12 bit

48 MHz

90 I/O

32 kB

1.98 V

3.8 V

- 40 C

+ 85 C

Tray

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

EFM32WG990F256-B-BGA112R
Silicon Labs
1,000: S/35.54
Non-Stocked Lead-Time 26 Weeks

Mfr. Part #
EFM32WG990F256-B-BGA112R

Mouser Part #
634-WG990256BBGA112R

Silicon Labs

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

Learn More

Datasheet

Non-Stocked Lead-Time 26 Weeks

Reel

S/35.54

Min.: 1,000
Mult.: 1,000

: 1,000

EFM32WG

SMD/SMT

BGA-112

ARM Cortex M4

256 kB

32 bit

12 bit

48 MHz

87 I/O

32 kB

1.98 V

3.8 V

- 40 C

+ 85 C

Reel

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

EFM32WG990F256-B-BGA112
Silicon Labs
840: S/36.98
Non-Stocked Lead-Time 26 Weeks

Mfr. Part #
EFM32WG990F256-B-BGA112

Mouser Part #
634-WG990F256BBGA112

Silicon Labs

ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB

Learn More

Datasheet

Non-Stocked Lead-Time 26 Weeks

S/36.98

Min.: 840
Mult.: 840

EFM32WG

SMD/SMT

BGA-112

ARM Cortex M4

256 kB

32 bit

12 bit

48 MHz

86 I/O

32 kB

1.98 V

3.8 V

- 40 C

+ 85 C

Tray

EFM32™ Wonder Gecko 32-bit Microcontrollers

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