E32-400M20S SX1278 Anti-interference Ultra-small size 410/493MHz SMD LoRa wireless module LoRaTM SMD wireless module
[Chip solution]：SX1278
[Frequency]：410～493MHz
[Transmitter power]：20dBm
[Communication diatance]：5km
[Size]：14 * 20 mm
[Product weight]：1.7±0.1g
[Introduction]：E32-400M20S is a self-developed, 410/493MHz LoRa TM SMD wireless module with the maximum transmission power of 1W which is based on the SX1278 produced by Semtech in the United States.
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| 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 | |