| Series | SMART™ SAM R21 |
| Package | Tape & Reel (TR)Cut Tape (CT)Cut Tape (CT)Digi-Reel® |
| Part Status | Active |
| Type | TxRx + MCU |
| RF Family/Standard | General ISM > 1GHZ |
| Protocol | - |
| Modulation | O-QPSK |
| Frequency | 2.4GHz |
| Data Rate (Max) | 250kbps |
| Power - Output | 4dBm |
| Sensitivity | -99dBm |
| Memory Size | 64kB Flash, 8kB SRAM |
| Serial Interfaces | I²C, SPI, UART, USART, USB |
| GPIO | 28 |
| Voltage - Supply | 1.8V ~ 3.6V |
| Current - Receiving | 11.3mA ~ 11.8mA |
| Current - Transmitting | 7.2mA ~ 13.8mA |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
| Package / Case | 48-VFQFN Exposed Pad |
| Supplier Device Package | 48-QFN (7x7) |
