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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Description Datasheet Availability Pricing (CHF) Filter the results in the table by unit price based on your quantity.
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Program Memory Size
Data Bus Width
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Supply Voltage - Max
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Silicon Labs ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB
Datasheet
898Expected 7/30/2026
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
Silicon Labs ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB
Datasheet
78In Stock
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
Silicon Labs ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB
Datasheet
447Expected 7/30/2026
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

Silicon Labs ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB
Datasheet
Non-Stocked Lead-Time 12 Weeks
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

Silicon Labs ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB
Datasheet
Non-Stocked Lead-Time 12 Weeks
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

Silicon Labs ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB
Datasheet
Non-Stocked Lead-Time 12 Weeks
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

Silicon Labs ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB
Datasheet
Non-Stocked Lead-Time 12 Weeks
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
Silicon Labs ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB
Datasheet
Non-Stocked Lead-Time 12 Weeks
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
Silicon Labs ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB
Datasheet
Non-Stocked Lead-Time 12 Weeks
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
Silicon Labs ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB
Datasheet
Non-Stocked Lead-Time 12 Weeks
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
Silicon Labs ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB
Datasheet
Non-Stocked Lead-Time 26 Weeks
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
Silicon Labs ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB
Datasheet
Non-Stocked Lead-Time 26 Weeks
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
Silicon Labs ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB
Datasheet
Non-Stocked Lead-Time 26 Weeks
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
Silicon Labs ARM Microcontrollers - MCU Wonder Gecko MCU IC 256KB
Datasheet
Non-Stocked Lead-Time 26 Weeks
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