DWM-LJ1276 is LoRa transceiver RF module which build by Sx1276 chipset for more details about the Sx1276 you can visit the link: sx1276datasheet .
1.DWM-LJ1276 PIN Diagram
DWM-JL1276-datasheet-pin-dagram
2.Pin Description
| PIN No. | Name | I/O/P | Description |
| 1 | GND | I | Ground |
| 2 | MISO | O | SPI Data output |
| 3 | MOSI | I | SPI Data input |
| 4 | SCK | I | SPI Clock input |
| 5 | NSS | I | SPI Chip select input |
| 6 | RESET | I | Reset trigger input |
| 7 | DIO5 | I/O | Digital I/O, software configured |
| 8 | GND | I | Ground |
| 9 | ANT | O | RF Output |
| 10 | GND | I | Ground |
| 11 | DIO3 | I/O | Digital I/O, software configured |
| 12 | DIO4 | I/O | Digital I/O, software configured |
| 13 | VCC | I | Supply voltage for moudule |
| 14 | DIO0 | I/O | Digital I/O, software configured |
| 15 | DIO1 | I/O | Digital I/O, software configured |
| 16 | DIO2 | I/O | Digital I/O, software configured |
3.Reference Design
DWM-JL1276-datasheet-reference-design
3.1 BOM of Typical Application
| Designator | Description | Manufacturer |
| M1 | Module LJ1295 16*16*1.8mm RoHS | Dwmzone |
| U1 | IC 8 BIT MCU STM8S003F3 SSOP20 RoHS | MICROICHIP |
| U2 | IC LDO XC6206P33PR 3.3V SOT-23 RoHS | TOREX |
| L1 | Thick film resistor0R 5% 1/16W 0402 RoHS | ROHM |
| C1 | NC | |
| C2 | NC | |
| C3 | CER 0.1uF/25V 20% X7R 0402 RoHS | MURATA |
| C4 | CER 0.1uF/25V 20% X7R 0402 RoHS | MURATA |
| C5 | CAP CER 10uF/16V 20% X5R 0402 RoHS | MURATA |
| C6 | CER 0.1uF/25V 20% X7R 0402 RoHS | MURATA |
| C7 | CAP CER 47uF/16V 20% X5R 1206 RoHS | MURATA |
| C8 | CER 0.1uF/25V 20% X7R 0402 RoHS | MURATA |
4.Example CRC Calculation
The following routine(s) may be implemented to mimic the CRC calculation of the DWM-LJ1276.
DWM-JL1295–LJ1276-datasheet-Example-CRC-Calculation
5.Example Temperature Reading
The following routine(s) may be implemented to read the temperature and calibrate the sensor.
DWM-JL1295-LJ1276-datasheet-Example-Temperature-reading
6.Packaging Information(unit:mm)
6.1 The Size of the PCB board.
DWM-JL1276-datasheet-packaging
6.2 The Size of the Shielding case
7.Recommended PCB Land Pattern (unit:mm)
DWM-JL1276-datasheet-Recommended-PCB-Land-Pattern
8. Demo code
DDT-R19050915-1E1 LJ1276-868 EN 301489-1-3 Report
DDT-R19050915-1E2 LJ1276-868 EN 300 220 Report 868MHz
DDT-R19050915-1E3 LJ1276-868 EN 62479 Report
If you want to get the samples pls visit the online shop DWM-LJ1276.