| Part Number | EFR32FG23A010F512GM48-BR | EFR32FG23A020F512GM48-BR | 
|---|---|---|
| Manufacturer | Silicon Labs | Silicon Labs | 
| Category | RF Transceiver ICs | RF Transceiver ICs | 
|   |   | |
| Product Status | Active | Active | 
| Type | TxRx + MCU | TxRx + MCU | 
| RF Family/Standard | General ISM < 1GHz | General ISM < 1GHz | 
| Protocol | Flex Gecko | Flex Gecko | 
| Modulation | 2FSK, 4FSK, DSSS, GFSK, GMSK, OOK, OQPSK | 2FSK, 4FSK, DSSS, GFSK, GMSK, OOK, OQPSK | 
| Frequency | 110MHz ~ 223MHz, 223MHz ~ 372MHz, 372MHz ~ 557MHz, 557MHz ~ 727MHz, 742MHz ~ 970MHz | 110MHz ~ 223MHz, 223MHz ~ 372MHz, 372MHz ~ 557MHz, 557MHz ~ 727MHz, 742MHz ~ 970MHz | 
| Data Rate (Max) | 2Mbps | 2Mbps | 
| Power - Output | 14dBm | 20dBm | 
| Sensitivity | -125.8dBm | -125.8dBm | 
| Memory Size | 512kB Flash, 64kB RAM | 512kB Flash, 64kB RAM | 
| Serial Interfaces | I²C, I²S, SPI, UART | I²C, I²S, SPI, UART | 
| GPIO | 31 | 31 | 
| Voltage - Supply | 1.71V ~ 3.8V | 1.71V ~ 3.8V | 
| Current - Receiving | 3.7mA ~ 9.5mA | 3.7mA ~ 9.5mA | 
| Current - Transmitting | 8.2mA ~ 90.6mA | 8.2mA ~ 90.6mA | 
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 48-VFQFN Exposed Pad | 48-VFQFN Exposed Pad | 
| Supplier Device Package | 48-QFN (6x6) | 48-QFN (6x6) |