The EFR32ZG23B010F512IM48-BR from Silicon Labs is a ZG23 sub-GHz RF transceiver and MCU IC with 512KB flash and 64KB, for Z-Wave ISM below 1 GHz at 863–870 MHz and 902–928 MHz, in a 48-VFQFN package with exposed pad.
The EFR32ZG23B010F512IM40-BR from Silicon Labs is a ZG23 sub-GHz RF transceiver and MCU IC with 512KB flash and 64KB, for Z-Wave ISM below 1 GHz at 863–870 MHz and 902–928 MHz, in a 40-VFQFN package with exposed pad.
The EFR32ZG23B010F512IM48-B from Silicon Labs is a general ISM sub-1 GHz RF transceiver with MCU for Z-Wave at 863–870 MHz and 902–928 MHz, with 512KB flash, 64KB, and a 48-VFQFN package with exposed pad.