Devices EFR32BG29 Series EFR32BG29 Series Silicon Labs Devices 4 EFR32BG29B140F1024IM40 EFR32BG29B140 Cortex-M33 EFR32BG29B220F1024CJ45 EFR32BG29B220 Cortex-M33 EFR32BG29B221F1024CJ45 EFR32BG29B221 Cortex-M33 EFR32BG29B230F1024CM40 EFR32BG29B230 Cortex-M33