ug303UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide The SLSTK3301A is an excellent starting point to become familiar with the EFM32™ Tiny Gecko TG11 Microcontroller .UG-303 I2 S Output MEMS Microphone Flex Evaluation Board GENERAL DESCRIPTION This user guide applies to the following MEMS microphone evaluation boards: • EV_INMP441-FX