Devices EFM32PG23 Series EFM32PG23B210 EFM32PG23B210 Silicon Labs Devices 4 EFM32PG23B210F128IM48 EFM32PG23B210 Cortex-M33 EFM32PG23B210F256IM48 EFM32PG23B210 Cortex-M33 EFM32PG23B210F512IM48 EFM32PG23B210 Cortex-M33 EFM32PG23B210F64IM48 EFM32PG23B210 Cortex-M33