| Parameters | 
                                
                                                                                                            
                                            | Factory Lead Time | 
                                            8 Weeks | 
                                        
                                                                            
                                            | Mounting Type | 
                                            Surface Mount | 
                                        
                                                                            
                                            | Package / Case | 
                                            48-VFQFN Exposed Pad | 
                                        
                                                                            
                                            | Operating Temperature | 
                                            -40°C~125°C | 
                                        
                                                                            
                                            | Packaging | 
                                            Tape & Reel (TR) | 
                                        
                                                                            
                                            | Series | 
                                            Flex Gecko | 
                                        
                                                                            
                                            | Part Status | 
                                            Active | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            2 (1 Year) | 
                                        
                                                                            
                                            | Type | 
                                            TxRx + MCU | 
                                        
                                                                            
                                            | Voltage - Supply | 
                                            1.8V~3.8V | 
                                        
                                                                            
                                            | Reach Compliance Code | 
                                            compliant | 
                                        
                                                                            
                                            | Frequency | 
                                            169MHz 433MHz 868MHz 915MHz | 
                                        
                                                                            
                                            | Memory Size | 
                                            1024kB Flash 256kB RAM | 
                                        
                                                                            
                                            | Protocol | 
                                            Flex Gecko | 
                                        
                                                                            
                                            | Power - Output | 
                                            20dBm | 
                                        
                                                                            
                                            | Sensitivity | 
                                            -102dBm | 
                                        
                                                                            
                                            | Data Rate (Max) | 
                                            1Mbps | 
                                        
                                                                            
                                            | Serial Interfaces | 
                                            I2C, I2S, IrDA, SPI, USART | 
                                        
                                                                            
                                            | Current - Receiving | 
                                            8.4mA~11mA | 
                                        
                                                                            
                                            | Current - Transmitting | 
                                            8.5mA~35.3mA | 
                                        
                                                                            
                                            | Modulation | 
                                            2FSK, 4FSK, ASK, BPSK, DBPSK, DSSS, GFSK, GMSK, OOK, O-QPSK | 
                                        
                                                                            
                                            | GPIO | 
                                            31 | 
                                        
                                                                            
                                            | RoHS Status | 
                                            RoHS Compliant | 
                                        
                                                                                                    
                            
                         
                                                EFR32FG12P431F1024IM48-CR Overview
Additionally, there is a 48-VFQFN Exposed Pad package for saving space.For RF transceiver's mounting, it uses the Surface Mount method.With transceiver RF's  high efficiency, transceiver RF emerges as a TxRx + MCU.High reliability is achieved by using advanced transceiver RF' packagings Tape & Reel (TR).As you can see, this RF transceiver comes from the well-known Flex Gecko series of products.In the 169MHz 433MHz 868MHz 915MHz frequency range, RF transceiver operates .
EFR32FG12P431F1024IM48-CR Features
48-VFQFN Exposed Pad package
Surface Mount for mounting
TxRx + MCU 
 Tape & Reel (TR) is used
Flex Gecko series
EFR32FG12P431F1024IM48-CR Applications
There are a lot of Silicon Labs EFR32FG12P431F1024IM48-CR RF Transceiver ICs applications. 
- Consumer Electronics
 - Retail
 - Remote Device Management
 - Industrial Controls
 - Health care
 - M2M Communication
 - Internet Radio
 - Receive
 - Internet of Things (IoT)
 - Power Amplifier (PA)