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| Part Number | RN21-I/RM | RN41-I/RM | RN21U-I/RM | RN121-I/RM |
|---|---|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete |
| RF Family/Standard | Bluetooth | Bluetooth | Bluetooth | WiFi |
| Protocol | Bluetooth v2.1 +EDR, Class 1 | Bluetooth v2.1 +EDR, Class 1 | Bluetooth v2.1 +EDR, Class 1 | 802.11b/g |
| Modulation | FHSS, GFSK | FHSS, GFSK | FHSS, GFSK | CDK, DBPSK, DQPSK, DSSS |
| Frequency | 2.4GHz | 2.4GHz | 2.4GHz | 2.4GHz |
| Data Rate | 3Mbps | 300kbps | 3Mbps | 54Mbps |
| Power - Output | 16dBm | 16dBm | 16dBm | 18dBm |
| Sensitivity | -80dBm | -80dBm | -80dBm | -85dBm |
| Serial Interfaces | UART | SPI, UART, USB | USB | SPI, UART |
| Antenna Type | Antenna Not Included | Integrated, Chip | Antenna Not Included | Integrated, Chip + U.FL |
| Utilized IC / Part | - | - | - | - |
| Memory Size | 8MB Flash | - | 8MB Flash | 4MB Flash, 300kB ROM, 80kB RAM |
| Voltage - Supply | 3V ~ 3.6V | 3V ~ 3.6V | 3V ~ 3.6V | 3.3V |
| Current - Receiving | 35mA | 35mA | 35mA | 40mA |
| Current - Transmitting | 65mA | 65mA | 65mA | 110mA |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Through Hole |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -30°C ~ 85°C |
| Package / Case | Module | 35-SMD Module | Module | 32-DIP Module |
