E32-900M20S LoRa TM SMD wireless module
[IC]：SX1276
[Frequency]：850～931MHz
[Power]：20dBm
[Distance]：5km
[Size]：14*20mm
[Introduction]：E32-900M20S is a self-developed, 868/915MHz LoRa TM SMD wireless module with the maximum transmission power of 1W which is based on the SX1276 produced by Semtech in the United States.
| Pin No. | Item | Direction | Description |
|---|---|---|---|
| 1 | GND | - | Ground |
| 2 | GND | - | Ground |
| 3 | GND | - | Ground |
| 4 | GND | - | Ground |
| 5 | GND | - | Ground |
| 6 | RXEN | Input | RF switch receiving control pin, connected to external MCU IO, high level effective |
| 7 | TXEN | Input | RF switch receiving control pin, connected to external MCU IO, high level effective |
| 8 | DIO2 | Input/Output | General IO port (see SX1276 manual for details) |
| 9 | VCC | - | Power supply, range 3.3 ~ 5.5V (external ceramic filter capacitor is recommended) |
| 10 | GND | - | Ground |
| 11 | GND | - | Ground |
| 12 | GND | - | Ground |
| 13 | DIO3 | Input/Output | General IO port (see SX1276 manual for details) |
| 14 | DIO4 | Input/Output | General IO port (see SX1276 manual for details) |
| 15 | DIO5 | Input/Output | General IO port (see SX1276 manual for details) |
| 16 | GND | - | Ground |
| 17 | DIO1 | Input/Output | General IO port (see SX1276 manual for details) |
| 18 | DIO0 | Input/Output | General IO port (see SX1276 manual for details) |
| 19 | RST | Input | Chip reset trigger input pin |
| 20 | MISO | Output | SPI data output pin |
| 21 | MOSI | Input | SPI data output pin |
| 22 | SCK | Input | SPI data output pin |
| 23 | NSS | Input | the module chip selects the pin used to start an SPI communication |
| 24 | GND | - | Ground |
| 25 | ANT | - | Antenna interface, Sample hole (50Ω characteristic impedance) |
| 26 | GND | - | Ground |