32-bit ARM® Microcontroller Family

Silicon Labs provides the largest portfolio of energy friendly 32-bit microcontroller (MCU) products for ultra-low power applications. The EFM32™ Gecko microcontroller family includes the energy efficient devices based on ARM® Cortex®-M4 with Floating Point Unit (FPU), Cortex-M3 and Cortex-M0+ processors. The Precision32™ 32-bit microcontroller family provides a highly integrated and flexible architecture, a rich peripheral set and ultra-low power consumption.

Download the Microcontroller Selector Guide

Download the EFM32™ Microcontroller Selector Guide

Download the Simplicity Studio™ Software Solutions Guide

 

Featured Product

MFi 32-bit Development Kit 

MFi 32-bit Development Kit NEW

The MFI-SIM3U1XX-DK Development Kit is designed to quickly jumpstart your Apple® accessory development project. This low-cost kit includes everything needed to being developing your Lightning™-based accessory, including a hardware and firmware platform that has passed Apple's MFi test process.

Made for iPhone 5s, iPhone 5c, iPhone 5, iPad Air, iPad (4th generation), iPad mini with Retina display, iPad mini, iPod touch (5th generation).
 
 

Mixed-Signal 32-bit Microcontroller Product Families

EFM32 Zero Gecko EFM32 Tiny Gecko EFM32 Gecko EFM32 Leopard Gecko EFM32 Giant Gecko EFM32 Wonder Gecko Precision32 EFM32 Wonder Gecko Precision32 
Family   Features Packages
EFM32 Zero Gecko 16 MCU devices
24 MHz Cortex-M0+ CPU
4–32 kB flash
2–4 kB RAM
USART, SPI, I2S, I2C, ADC, ACMP, AES QFN24, 5 x 5 mm
QFN32, 6 x 6 mm
QFP48, 7 x 7 mm
EFM32 Tiny Gecko 35 MCU devices
32 MHz Cortex-M3 CPU
4–32 kB flash
2–4 kB RAM
USART, LEUART, SPI, I2S, I2C, ADC, ACMP, OPAMP, AES, LESENSE; optional: LCD QFN24, 5 x 5 mm
QFN32, 6 x 6 mm
QFP48, 7 x 7 mm
BGA48, 4 x 4 mm
QFN64, 9 x 9 mm
QFP64, 10 x 10 mm
EFM32 Gecko 31 MCU devices
32 MHz Cortex-M3 CPU
16–128 kB flash
8–16 kB RAM
USART, LEUART, SPI, I2S, I2C, ADC, ACMP, AES, EBI; optional: LCD QFN32, 6 x 6 mm
QFP48, 7 x 7 mm
QFN64, 9 x 9 mm
QFP64, 10 x 10 mm
QFP100, 14 x 14 mm
BGA112, 10 x 10 mm
EFM32 Leopard Gecko 63 MCU devices
48 MHz Cortex-M3 CPU
64–256 kB flash
32 kB RAM
USART, LEUART, SPI, I2S, I2C, ADC, ACMP, OPAMP, AES, LESENSE, EBI; optional: USB, LCD, TFT QFN64, 9 x 9 mm
QFP64, 10 x 10 mm
QFP100, 14 x 14 mm
BGA112, 10 x 10 mm
BGA120, 7 x 7 mm
WLCSP81, 4.36 x 4.28 mm
EFM32 Giant Gecko 40 MCU devices
48 MHz Cortex-M3 CPU
512–1024 kB flash
128 kB RAM
USART, LEUART, SPI, I2S, I2C, ADC, ACMP, OPAMP, AES, LESENSE, EBI; optional: USB, LCD, TFT QFN64, 9 x 9 mm
QFP64, 10 x 10 mm
QFP100, 14 x 14 mm
BGA112, 10 x 10 mm
BGA120, 7 x 7 mm
EFM32 Wonder Gecko 63 MCU devices
48 MHz Cortex-M4 CPU
64–256 kB flash
32 kB RAM
USART, LEUART, SPI, I2S, I2C, ADC, ACMP, OPAMP, AES, LESENSE, EBI, FPU + DSP; optional: USB, LCD, TFT QFN64, 9 x 9 mm
QFP64, 10 x 10 mm
QFP100, 14 x 14 mm
BGA112, 10 x 10 mm
BGA120, 7 x 7 mm
WLCSP81, 4.36 x 4.28 mm
Precision32 16 MCU devices
50 MHz Cortex-M3 CPU
32–256 kB flash
8–32 kB RAM
SPI, UART, I2C, flexible crossbar, analog-intensive peripherals QFN40, 6 x 6 mm
QFN64, 9 x 9 mm
TQFP64, 10 x 10 mm
TQFP80, 12 x 12 mm
BGA80, 5.5 x 5.5 mm
Precision32 16 MCU devices
80 MHz Cortex-M3 CPU
32–256 kB flash
8–32 kB RAM
USB 2.0, USART, UART, I2C, SPI, I2S, flexible crossbar, analog-intensive peripherals QFN40, 6 x 6 mm
QFN64, 9 x 9 mm
TQFP64, 10 x 10 mm
TQFP80, 12 x 12 mm
LGA92, 7 x 7 mm
Precision32 16 MCU devices
80 MHz Cortex-M3 CPU
32–256 kB flash
8–32 kB RAM
USART, UART, I2C, SPI, I2S, flexible crossbar, analog-intensive peripherals QFN40, 6 x 6 mm
QFN64, 9 x 9 mm
TQFP64, 10 x 10 mm
TQFP80, 12 x 12 mm
LGA92, 7 x 7 mm
 
 

Top 10 Silicon Labs 32-bit Microcontroller Technology Features

Silicon Labs' EFM32 32-bit microcontroller family features the world's most energy friendly microcontroller devices, particularly suited for use in low-power and energy sensitive applications — here we'll highlight the 10 factors that make this performance possible.
 
 
 
 
 

Design Resources

  • Third Party Network

    Silicon Labs partners with a variety of third party companies to provide you with complete flexibility when selecting the best tools for your EFM32 32-bit microcontroller based designs.
  • 32-bit Longevity Commitment

    Silicon Labs' EFM32 longevity commitment is to manufacture all devices as long as customers continue to buy them, and for as long as the relevant silicon technology is available.
  • Customized EFM32 Microcontrollers

    Based on the standard EFM32 32-bit ARM Cortex-M MCU platform, Silicon Labs offers customized embedded solutions.
  • Microcontroller Die Sales Program

    Get 8-bit and 32-bit microcontroller products in die form for added flexibility. All wafers are fully tested to the same levels as packaged products.