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This board supports the Silicon Labs EFM32 Tiny Gecko 11 microcontroller. The chip mounted on the target board is the EMF32TG11B3.


Feature Notes/Range
Target Device EFM32TG11
Target Architecture Arm Cortex-M0+
Vcc 1.2V
Programming Serial Bootloader
Hardware Crypto Yes
Availability Source files
Status In development
Shunt TBD

Power Supply

The core of the Tiny Gecko chip runs from a 1.2v supply. This is supplied and filtered through the CW308T. The I/O buses are supplied with 3.3v.

Security Features

The Tiny Gecko family of microcontrollers implements many security features including:

  • Hardware implementations of AES-128/256, SHA-224/256

  • Hardware CRC engine

  • Access control for peripherals

For a full list of security features see the product family data sheet[1]


A serial bootloader is implemented on the Tiny Gecko series of chips. Details for the use of this feature are described in Silicon Labs application note AN0042[2].

Schematic and Layout

See GIT Repo for design files.