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E29-400M22S SMD long range Wireless Serial Port Transmission uart module modules Spread Spectrum receiver transmitter
[Introduction]：Based on PANCHIP’s RF chip PAN3031, the E29-400M22S is a SMD ChirpIoT™ wireless module with ultra-small size and suitable for 433MHz, 470MHz.
| Pin No. | Pin Name | Pin Direction | Pin Function |
| 1 | GND | - | Ground wire, connected to the power reference groun |
| 2 | GND | - | Ground wire, connected to the power reference groun |
| 3 | GND | - | Ground wire, connected to the power reference groun |
| 4 | GND | - | Ground wire, connected to the power reference groun |
| 5 | GND | - | Ground wire, connected to the power reference groun |
| 6 | RXEN | Output | The RF switch receiving control pin, manually controlled by the internal RF chip, and the high level is effectiv |
| 7 | TXEN | Output | The RF switch receiving control pin, manually controlled by the internal RF chip, and the high level is effectiv |
| 8 | GPIO11 | Output | CAD interrupt output pin |
| 9 | VCC | - | Power supply, 1.8~3.6V (It is also recommended to add external ceramic filter capacitor) |
| 10 | GND | - | Ground wire, connected to the power reference groun |
| 11 | GND | - | Ground wire, connected to the power reference groun |
| 12 | GND | - | Ground wire, connected to the power reference groun |
| 13 | IRQ | Output | RF interrupt pin |
| 14 | NC | - | - |
| 15 | NC | - | - |
| 16 | MISO | Output | SPI data output pin |
| 17 | MOSI | Input | SPI data input pin |
| 18 | SCK | Input | SPI clock input pin |
| 19 | NSS | Input | Module selected pin, used to start an SPI communication Ground wire, connected to power reference ground |
| 20 | GND | - | Ground wire, connected to the power reference groun |
| 21 | ANT | - | Antenna interface, stamp hole (50 ohm characteristic impedance) |
| 22 | GND | - | Ground wire, connected to the power reference groun |