EFM32™ Wonder Gecko 32-bit ARM® Cortex®-M4 Microcontroller

Silicon Labs’ EFM32™ Wonder Gecko 32-bit microcontroller (MCU) family includes 60 devices 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 256 kB of flash memory, 32 kB of RAM and CPU speeds up to 48 MHz. The 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.

Features

  • 48 MHz ARM Cortex-M4 CPU
    • DSP instruction support and floating-point unit
    • Memory Protection Unit (MPU)
    • Wake-up interrupt controller
  • Up to 256 kB flash
  • 32 kB RAM
  • External bus interface supports up to 4x256 MB of external memory mapped space
  • Ultra-low power precision and analog peripherals
    • 12-bit 1 Msps ADC
    • 12-bit 500 ksps DAC
  • Up to 8x36 segment LCD controller (8xx/9xx only)
  • Flexible energy management system with 5 different energy modes
    • 20 nA shutoff mode (0.4 µA with RTC)
    • 0.65 µA stop mode, including power-on-reset, brown-out detector, RAM and CPU retention
    • 0.95 µA deep sleep mode, including RTC with 32.768 kHz oscillator, power-on-reset, brown-out detector, RAM and CPU retention
    • 63 µA/MHz sleep mode
    • 225 µA/MHz run mode with code executed from flash
  • Low power sensor interface
  • USB with host and OTG support
    • USB 2.0-compliant
    • On-chip PHY and embedded 5 V to 3.3 V regulator
  • Up to 93 GPIOs
  • 1.98–3.8 V supply voltage
  • Temperature range: –40 to +85 °C
  • Packages:
    • 64-pin QFN (9 mm x 9 mm)
    • 64-pin QFP (10 mm x 10 mm)
    • 100-pin QFP (14 mm x 14 mm)
    • 112-pin BGA (10 mm x 10 mm)
    • 120-pin BGA (7 mm x 7 mm)
    • 81-pin WLCSP (4.36 mm x 4.28 mm)

Getting Started with EFM32™ Wonder Gecko

EFM32WG-STK3800 Starter Kit

The easiest way to begin development with the EFM32™ Wonder Gecko low-cost microcontroller family is with the EFM32WG-STK3800 Starter Kit.

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Wonder Gecko Product Matrix

Common Specifications

MCU Core: ARM Cortex-M4

MHz: 48

RAM (kB): 32

ADC 1: 12-bit, 8-ch., 1 Msps

DAC: 12-bit, 2 ch.

Cap Sense: Yes

Temp Sensor: Yes

Timers (16-bit): 4

AES-128: Yes

AES-256: Yes

RTC: Yes

SPI: 3

I²C: 2

Devices
Part Number Data Sheet Dev Kit MHz Flash (kB) RAM (kB) Dig I/O Pins 5 Volt Tolerant ADC 1 DAC USB Cap Sense LCD Temp Sensor Timers (16-bit) AES-128 AES-256 ECC SHA-1 SHA-2 RSA-2048 UART USART SPI I²C I²S EMIF RTC Comparators Vdd (min) Vdd (max) Package Type Package Size Internal Osc. Debug Interface Cryptography
EFM32WG-DK3850 48 128 32 56 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes No Yes 4 AES-256 Yes No No No No 5 3 3 2 1 0 Yes 2 1.98 3.8 QFN64 9x9 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 256 32 56 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes No Yes 4 AES-256 Yes No No No No 5 3 3 2 1 0 Yes 2 1.98 3.8 QFN64 9x9 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 64 32 56 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes No Yes 4 AES-256 Yes No No No No 5 3 3 2 1 0 Yes 2 1.98 3.8 QFN64 9x9 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 128 32 53 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 QFP64 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 256 32 53 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 QFP64 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 64 32 53 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 QFP64 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 128 32 86 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 QFP100 14x14 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 256 32 86 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 QFP100 14x14 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 64 32 86 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 QFP100 14x14 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 128 32 90 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA112 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 256 32 90 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA112 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 64 32 90 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA112 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 128 32 93 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA120 7x7 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 256 32 93 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA120 7x7 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 64 32 93 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA120 7x7 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 128 32 53 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes No Yes 4 AES-256 Yes No No No No 5 3 3 2 1 0 Yes 2 1.98 3.8 QFN64 9x9 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 256 32 53 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes No Yes 4 AES-256 Yes No No No No 5 3 3 2 1 0 Yes 2 1.98 3.8 QFN64 9x9 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 64 32 53 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes No Yes 4 AES-256 Yes No No No No 5 3 3 2 1 0 Yes 2 1.98 3.8 QFN64 9x9 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 128 32 50 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes No Yes 4 AES-256 Yes No No No No 5 3 3 2 1 0 Yes 1 1.98 3.8 QFP64 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 256 32 50 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes No Yes 4 AES-256 Yes No No No No 5 3 3 2 1 0 Yes 1 1.98 3.8 QFP64 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 64 32 50 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes No Yes 4 AES-256 Yes No No No No 5 3 3 2 1 0 Yes 1 1.98 3.8 QFP64 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 128 32 65 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 CSP81 4.4x4.3 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 256 32 65 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 CSP81 4.4x4.3 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 64 32 65 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 CSP81 4.4x4.3 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 128 32 83 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 QFP100 14x14 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 256 32 83 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 QFP100 14x14 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 64 32 83 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 QFP100 14x14 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 128 32 87 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA112 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 256 32 87 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA112 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 64 32 87 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA112 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 128 32 93 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA120 7x7 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 256 32 93 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA120 7x7 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 64 32 93 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes No Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA120 7x7 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 128 32 56 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes Yes Yes 4 AES-256 Yes No No No No 5 3 3 2 1 0 Yes 2 1.98 3.8 QFN64 9x9 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 256 32 56 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes Yes Yes 4 AES-256 Yes No No No No 5 3 3 2 1 0 Yes 2 1.98 3.8 QFN64 9x9 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 64 32 56 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes Yes Yes 4 AES-256 Yes No No No No 5 3 3 2 1 0 Yes 2 1.98 3.8 QFN64 9x9 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 128 32 53 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes Yes Yes 4 AES-256 Yes No No No No 5 3 3 2 1 0 Yes 2 1.98 3.8 QFP64 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 256 32 53 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes Yes Yes 4 AES-256 Yes No No No No 5 3 3 2 1 0 Yes 2 1.98 3.8 QFP64 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 64 32 53 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes Yes Yes 4 AES-256 Yes No No No No 5 3 3 2 1 0 Yes 2 1.98 3.8 QFP64 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 128 32 86 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes Yes Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 QFP100 14x14 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 256 32 86 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes Yes Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 QFP100 14x14 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 64 32 86 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes Yes Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 QFP100 14x14 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 128 32 90 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes Yes Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA112 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 256 32 90 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes Yes Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA112 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 64 32 90 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes Yes Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA112 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 128 32 93 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes Yes Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA120 7x7 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 256 32 93 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes Yes Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA120 7x7 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 64 32 93 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 0 Yes Yes Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA120 7x7 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 128 32 53 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes Yes Yes 4 AES-256 Yes No No No No 5 3 3 2 1 0 Yes 1 1.98 3.8 QFN64 9x9 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 256 32 53 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes Yes Yes 4 AES-256 Yes No No No No 5 3 3 2 1 0 Yes 1 1.98 3.8 QFN64 9x9 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 64 32 53 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes Yes Yes 4 AES-256 Yes No No No No 5 3 3 2 1 0 Yes 1 1.98 3.8 QFN64 9x9 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 128 32 50 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes Yes Yes 4 AES-256 Yes No No No No 5 3 3 2 1 0 Yes 1 1.98 3.8 QFP64 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 256 32 50 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes Yes Yes 4 AES-256 Yes No No No No 5 3 3 2 1 0 Yes 1 1.98 3.8 QFP64 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 64 32 50 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes Yes Yes 4 AES-256 Yes No No No No 5 3 3 2 1 0 Yes 1 1.98 3.8 QFP64 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 128 32 83 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes Yes Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 QFP100 14x14 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 256 32 83 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes Yes Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 QFP100 14x14 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 64 32 83 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes Yes Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 QFP100 14x14 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 128 32 87 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes Yes Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA112 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 256 32 87 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes Yes Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA112 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 64 32 87 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes Yes Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA112 10x10 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 128 32 93 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes Yes Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA120 7x7 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 256 32 93 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes Yes Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA120 7x7 ±2% ETM; SW AES-128 AES-256
EFM32WG-DK3850 48 64 32 93 No 12-bit, 8-ch., 1 Msps 12-bit, 2 ch. 1 Yes Yes Yes 4 AES-256 Yes No No No No 7 3 3 2 1 0 Yes 2 1.98 3.8 BGA120 7x7 ±2% ETM; SW AES-128 AES-256
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