[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.
| RF Parameter | Value | Remark |
|---|---|---|
| Working frequency | 410~493 MHz | - |
| Transmitting power | 22 dBm | Max. Power (160mW) |
| Receiving sensitivity | -147 dBm | - |
| Air data rate | 0.018k~300kbps | - |
| Test distance | 6500m | In open and clear air, with maximum power, 5dBi antenna gain, height of 2m |
| Hardware Parameter | Value | Remark |
|---|---|---|
| Size | 14 * 20 mm | |
| Antenna type | IPEX / Stamp hole | |
| Communication interface | SPI | |
| Package | SMD |
| Electronic parameter | Min. | Typ. | Max. | Unit | Condition |
|---|---|---|---|---|---|
| Power supply | 1.8 | 3.3 | 3.6 | V | |
| Communication level | 1.8 | 3.3 | 3.6 | V | |
| Transmitting current | 95 | 100 | 105 | mA | 22dBm（160mW） |
| Receiving current | 6 | 6.5 | 7 | mA | |
| Sleep current | — | 180 | — | nA | |
| Operating temperature | -40 | 20 | +85 | ℃ | |
| Operating humidity | 10 | 60 | 90 | % | |
| Storage temperature | -40 | 20 | +125 | ℃ |
| 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 |
