Download the EFM32G222F128 datasheet PDF.
This datasheet also includes the EFM32G222F32 variant, as both parts are published together in a single manufacturer document.
...the world's most energy friendly microcontrollers
EFM32G222 DATASHEET
F128/F64/F32 • ARM Cortex-M3 CPU platform • High Performance 32-bit processor @ up to 32 MHz • Memory Protection Unit •.