Specifications
| Attribute | Value |
| Supplier | Rochester Electronics, LLC |
| Package / Case | Bulk |
| Series | SMART™ SAM R21 |
| Part Status | Active |
| Type | TxRx + MCU |
| RF Family / Standard | General ISM > 1GHz |
| Modulation | O-QPSK |
| Frequency | 2.4GHz |
| Data Rate (Max) | 250kbps |
| Power - Output | 4dBm |
| Sensitivity | -99dBm |
| Memory Size | 128kB Flash, 16kB SRAM |
| Serial Interfaces | I²C, SPI, UART, USART, USB |
| GPIO | 16 |
| Voltage - Supply | 1.8V ~ 3.6V |
| Current - Receiving | 11.3mA ~ 11.8mA |
| Current - Transmitting | 7.2mA ~ 13.8mA |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |