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| Part Number | SI1003-C-GM | 
| Datasheet | SI1003-C-GM datasheet | 
| Description | IC RF TXRXMCU ISM1GHZ 42WFQFN | 
| Manufacturer | Silicon Labs | 
| Series | - | 
| Part Status | Obsolete | 
| Type | TxRx + MCU | 
| RF Family/Standard | General ISM < 1GHz | 
| Protocol | EZRadioPro | 
| Modulation | FSK, GFSK, OOK | 
| Frequency | 240MHz ~ 960MHz | 
| Data Rate (Max) | 256kbps | 
| Power - Output | 13dBm | 
| Sensitivity | -121dBm | 
| Memory Size | 32kB Flash, 4.35kB RAM | 
| Serial Interfaces | I²C, SPI, UART | 
| GPIO | 22 | 
| Voltage - Supply | 1.8V ~ 3.6V | 
| Current - Receiving | 18.5mA | 
| Current - Transmitting | 17mA ~ 30mA | 
| Operating Temperature | -40°C ~ 85°C | 
| Package / Case | 42-WFQFN Exposed Pad |