E32-M Series, LoRa Spread Spectrum Module E32-400M20S
E32-400M20S
[IC]：SX1278
[Frequency]：410～493MHz
[Power]：30dBm
[Distance]：5km
[Size]：14 * 20 mm
[Feature]：E32-400M20S is a self-developed, 433/470MHz 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.
| Model | Interface | IC | Frequency Hz | Power dBm | Distance km | Air data | Package | Size (mm) | Feature | Manual |
| E32-400M20S | SPI | SX1278 | 433M 470M | 20 | 5 | - | SMD | 14 * 20 | Long transmission distance,Strong penetration diffraction | ✔ |
| E32-400M30S | SPI | SX1278 | 433M 470M | 30 | 10 | 0.018K~37.5K | SMD | 24 * 38.5 | Long transmission distance,Strong penetration diffraction | ✔ |
| E32-900M20S | SPI | SX1276 | 868M 915M | 20 | 5 | 0.018K~37.5K | SMD | 14*20 | Long transmission distance,Strong penetration diffraction | ✔ |
| E32-900M30S | SPI | SX1276 | 868M 915M | 30 | 10 | 0.018k~37.5k | SMD | 24*38.5 | Long transmission distance,Strong penetration diffraction | ✔ |
| Main parameter | Description |
Remark |
| Reference distance |
5km |
Test condition：clear and open area, antenna gain: 5dBi，antenna height: 2m，air data rate: 2.4 kbps |
| FIFO |
256Byte |
Maximum length of single send |
| Crystal Oscillator |
32MHz |
|
| Protocol |
LoRaTM(recommended) |
FSK/GFSK/MSK/GMSK/OOK |
| Package |
SMD |
|
| Interface |
1.27mm |
Sample hole |
| Communication interface |
SPI |
0～10Mbps |
| Size |
14 * 20 mm |
- |
| Antenna |
Sample hole / IPEX |
50 ohm impedance |
| Main parameter | Min | Type | Max | Unit | Remark |
| Operating voltage |
1.8 |
3.3 | 3.6 | V | ≥5.5 V ensures output power |
| Communication level |
- | 3.3 |
- | V |
- |
| Operating temperature |
-40 |
- | +85 |
℃ |
Industrial grade |
| Operating frequency |
410 |
- | 493 |
MHz |
- |
| TX current |
- | 110 | - | mA |
- |
| RX current |
- | 17 |
- | mA |
- |
| Sleep current |
- | 2 | - | μA |
- |
| Max TX power |
- | 20 | - | dBm |
- |
| Receiving sensitivity |
-145 |
-147 |
-148 |
dBm |
Air data rate is 1.2 kbps |
| 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平 |
| 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 |
