E22-400M22S SX1268 410-493MHz LoRa GFSK Wireless Module SX1268 433MHz LoRa Module
[IC]：SX1268
[Frequency]：410~493MHz
[Power]：22dBm
[Distance]：7km
[Interface]：SPI
[Weight]：1.5±0.1g
[Introduction]：The E22 series is the first wireless module in China to adopt Semtech's SX1262, SX1268 RF chip. This chip provides a variety of modulation methods, such as LoRaTM and traditional GFSK. Its special LoRaTM modulation method increases the communication distance.
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| Pin No. | Pin Item | Pin Direction | Pin Application |
|---|---|---|---|
| 1 | GND | - | Ground |
| 2 | GND | - | Ground |
| 3 | GND | - | Ground |
| 4 | GND | - | Ground |
| 5 | GND | - | Ground |
| 6 | RXEN | Input | RF switch RX control，connecting external MCU IO, valid in high level |
| 7 | TXEN | Input | RF switch TX control，connecting external MCU IO or DIO2, valid in high level |
| 8 | DIO2 | Input/Output | Configurable IO port（see more in SX126x datasheet） |
| 9 | VCC | - | Power supply, 1.8V~3.7V（external ceramic filter capacitoris recommended） |
| 10 | GND | - | Ground |
| 11 | GND | - | Ground |
| 12 | NRST | Input | Module reset pin, low reset |
| 13 | DIO1 | Input/Output | Configurable IO port（see more in SX126x datasheet） |
| 14 | BUSY | Output | State indicator（see more in SX126x datasheet） |
| 15 | NRST | Input | Chip reset initiation, valid in low level |
| 16 | MISO | Output | SPI master input slave output |
| 17 | MOSI | Input | SPI master output slave input |
| 18 | SCK | Input | SPI clock |
| 19 | NSS | Input | Chip select，for starting a SPI communication |
| 20 | GND | - | Ground |
| 21 | ANT | - | Stamp hole（50 ohm impedance） |
| 22 | GND | - | Ground |