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This board supports the Silicon Labs EFM32 Giant Gecko 11 microcontroller. The chip mounted on the target board is the EFM32GG11B1.

This is a BETA target and not yet available. This page will continue to be updated until release. Gerbers are available in the GIT repo if you live dangerously.


Feature Notes/Range
Target Device EFM32GG11
Target Architecture Arm Cortex M4
Vcc 1.2V
Programming Serial Bootloader
Hardware Crypto Yes
Availability Source files
Status In development
Shunt TBD

Power Supply

The core of the Giant 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

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


A serial bootloader is implemented on the Giant 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.