[Chip solution]：SX1262
[Working frequency band]：850MHz～930MHz
[Transmission power]：22dBm
[Communication distance]：7km
[Product size]：10*10*2.5mm
[Introduction]：E22-900MM22S is based on the new generation of LoRaTM radio frequency chip SX1262 produced by Semtech in the United States as the core of the independent research and development of ultra-small volume, and is suitable for 868MHz, 915MHz chip LoRaTM wireless module.
| Pin number | Pin name | Pin direction | Pin purposes |
| 1 | VCC | - | Power supply, range 1.8V~3.7V (external ceramic filter capacitor is recommended) |
| 2 | GND | - | Ground wire, connected to the power reference ground |
| 3 | NRST | input | Chip reset triggers input pin, active low level |
| 4 | NC | - | - |
| 5 | NC | - | - |
| 6 | ANT | - | Radio frequency interface, stamp hole |
| 7 | GND | - | Ground wire, connected to the power reference ground |
| 8 | NC | - | - |
| 9 | TXEN | input | Rf switch transmitting control pin, connected to external |
| 10 | RXEN | input | Rf switch receiving control pin, connected to external |
| 11 | BUSY | output | Used for status indication |
| 12 | MIS0 | output | SPI data output pin |
| 13 | M0SI | input | SPI data input pin |
| 14 | NSS | input | The module chip selection pin is used to start an SPI |
| 15 | SCK | input | SPI clock input pin |
| 16 | GND | - | Ground wire, connected to the power reference ground |
| 17 | NC | - | - |
| 18 | DI03 | Input/output | Configurable universal I/O port |
| 19 | DIO2 | Input/output | Configurable universal I/O port |
| 20 | DI01 | Input/output | Configurable universal I/O port |