SX1278 LoRa Module Spi 20dBm Long Range Wireless Transceiver 433MHz Rf Module
[IC]：SX1278
[Frequency]：410~441MHz
[Power]：20dBm
[Distance]：5.0km
[Interface]：SPI
[Weight]：2.3±0.1g
[Introduction]：E19-433M20SC is based on original imported RFIC SX1278 from SEMTECH, adopts LoRa spread spectrum technology. Which means the transmitting distance is much longer than before, besides the power density is more concentrated and anti-interference performance is better.
| Pin No. | Pin item | Pin direction | Pin application |
|---|---|---|---|
| 1 | GND | Input | Ground electrode, connected to the power reference ground. |
| 2 | DIO5 | Input /Output | Configurable IO interface(See more details in SX1278 data sheet |
| 3 | DIO4 | Input /Output | Configurable IO interface(See more details in SX1278 data sheet |
| 4 | DIO3 | Input /Output | Configurable IO interface(See more details in SX1278 data sheet |
| 5 | DIO2 | Input /Output | Configurable IO interface(See more details in SX1278 data sheet |
| 6 | DIO1 | Input /Output | Configurable IO interface(See more details in SX1278 data sheet |
| 7 | DIO0 | Input /Output | Configurable IO interface(See more details in SX1278 data sheet |
| 8 | RST | Input | Reset |
| 9 | NC | - | Not connect |
| 10 | GND | Input | Ground electrode, connected to the power reference ground. |
| 11 | VCC | Input | Power supply 1.8V-3.6V DC. 3.3V and external ceramic filter capacitor are recommended.） |
| 12 | SCK | Input | SPI clock |
| 13 | MISO | Output | SPI clock |
| 14 | MOSI | Input | SPI clock |
| 15 | NSS | Input | Chip select |
| 16 | TXEN | Input | Radio frequency switch control, make sure the TXEN pinis in high level, RXEN pin is in low level when transmitting. |
| 17 | RXEN | Input | Radio frequency switch control, make sure the TXEN pinis in high level, RXEN pin is in low level when transmitting. |
| 18 | GND | - | Ground electrode, connected to the power reference ground. |
| 19 | GND | - | Ground electrode, connected to the power reference ground. |
| 20 | ANT | Output | Antenna |
| 21 | GND | - | Ground electrode, connected to the power reference ground. |