Ebyte 425MHz 433MHz 525MHz Wireless Rf Receiver Module S14432 Chip
[IC]：SI4432
[Frequency]：425~525MHz
[Power]：20dBm
[Distance]：1.6km
[Interface]：SPI
[Introduction]：E27-4333M20S is a 100mW wireless transceiver module, operates at 433MHz,with small-size(1.27 Pin pitch).E27-4333M20S is based on the original imported RF chip Si4432 from Silicon Labs. With diversified built-in antenna and excellent anti-interface performance, the chip supports frequency hopping.
| Pin No | Pin item | Pin direction | Pin application |
|---|---|---|---|
| 1 | GND | - | Ground |
| 2 | GPIO0 | Input/Output | Configurable GPIO |
| 3 | GPIO1 | Input/Output | Configurable GPIO |
| 4 | GPIO2 | Input/Output | Configurable GPIO |
| 5 | VCC | Input/Output | Power supply 1.8V~3.6V. |
| 6 | SDO | Output | SPI master input slave output |
| 7 | SDI | Input | SPI master input slave output |
| 8 | SLCK | Input | SPI master input slave output |
| 9 | NSEL | Output | SPI chip select for starting SPI communication |
| 10 | IRQ | Output | SPI chip select for starting SPI communication |
| 11 | SDN | - | Shut down input PinIt is low level when working.(See SI4432 manual for moredetails) |
| 12 | GND | - | Ground |
| 13 | ANT | - | Antenna |
| 14 | GND | - | Ground |