LoRa 868MHz 915MHz SX1262 SX1268 30dBm SMD UART Wireless Transmitter and Receiver Long Range RF Module IoT
[IC]：SX1262
[Frequency]：850.125~930.125MHz
[Power]：30dBm
[Distance]：10km
[Size]：25*40.5mm
[Introduction]：E22-900T30S is a new generation of LoRa wireless module, based on the SX1262 RF chip wireless serial port module (UART), with a variety of transmission modes.
| No. | Name | Direction | Function |
|---|---|---|---|
| 1 | GND | Input | Ground |
| 2 | VCC | Input | Power supply ：3.3~ 5.5V DC |
| 3 | AUX | Output | To indicate module ’ s working status & wakes up the external MCU. During the procedure of self-check initialization, the pin outputs low level. Can be configured as push-pull output (can be suspended). |
| 4 | TXD | Output | TTL UART outputs, connects to external RXD (MCU, PC) input pin. Can be configured as open-drain or push-pull output |
| 5 | RXD | Input | TTL UART inputs, connects to external (MCU, PC) TXD output pin. Can be configured as open-drain or pull-up input. Ground |
| 6 | M1 | Input（weak pull-up） | Work with M0 to decide 4 working modes of module (not suspended, if not used, could be grounded). |
| 7 | M0 | Input（weak pull-up） | Work with M1 to decide 4 working modes of module (not suspended, if not used, could be grounded). |
| 11 | ANT | output | High frequency signal output, 50 ohm characteristic impedance |
| 12 | GND | Input | Ground. |
| 13 | GND | Input | Ground |
| 14 | GND | Input | Ground |
| 18 | NC | Input/output | Can be suspended. |
| 19 | NC | Input/output | Can be suspended. |
| 20 | NC | Input/output | Can be suspended. |
| 21 | +3.3V | Input | |
| 22 | NC | Input/output | can be suspended |
| 23 | GND | Ground. | |
| 24 | NRST | Input | Module reset pin, low reset |