SX1278 wireless module is SEMTECH's latest LoRaTM modulation technology wireless chip, the module in addition to the traditional GFSK modulation technology, but also uses the LoRa (remote) spread spectrum technology, with ultra-long distance spread spectrum communication, high anti-interference And minimizes current consumption. Using LoRaTM mode can achieve high -148dbm high sensitivity, and with integrated +20 dBm power output, you can achieve low-power ultra-long distance transmission, the module is suitable for any complex environment of wireless data transmission applications, such as: Table, intelligent home control, automotive electronics, security alarm, industrial monitoring and control systems, long-range agricultural irrigation control systems and other applications. The module can be easily embedded into the customer's existing product or system design, the standard SPI interface, making communication easy and concise. Customers only in the original micro-control device to compile a simple communication protocol, you can achieve two-way communication to achieve data transmission.
Specifications Details:
- FSK / GFKS technology, LoRa (remote) spread spectrum technology
- Half duplex communication
- Super anti-jamming (channel rejection ratio: 56db)
- High Receive Sensitivity -139dbm. (32M Passive 10ppm Crystal)
- ISM multi-band, no need to apply for frequency free use.
- Multi-frequency optional, a variety of transmission rate. Can be used in FDMA and FM technology.
- Intelligent reset, low voltage monitoring, timer wakeup, low power mode, sleep mode
- Low power consumption to accept current: 10-12mA
- 256-bit FIFO TX / RX
- RSSI channel detection function
- Transmission mode: FIFO / direct mode (recommended FIFO pack mode)
- Configuration: AFC / air wake-up function / low power consumption / carrier sense / FEC error correction / AEC encryption
- Ultra-long distance transmission open up to 5KM.
- Module size: 17 * 16.5mm
Three: product applications
1) remote control and remote data acquisition system
2) wireless meter reading (water meter, meter, gas meter)
3) wireless ordering machine, oil field, mining area, site, factory and other original 485/232 interface system
4) industrial data acquisition, transmission, intelligent control system
5) wireless alarm system
6) intelligent furniture system
7) Infant surveillance system / hospital paging system
8) wireless small data transmission system
Four: interface definition
| order | definition | description | Remarks |
| 1 | GND | Signal ground |
|
| 2 | DIO1 | Digital I / O, can be customized |
|
| 3 | DIO2 | Digital I / O, can be customized |
|
| 4 | DIO3 | Digital I / O, can be customized |
|
| 5 | VCC | power supply | 3.3V (1.8 ~ 3.6V) |
| 6 | MISO | SPI data output |
|
| 7 | MOSI | SPI data output |
|
| 8 | SCK | SPI clock input |
|
| 9 | NSS | SPI chip select |
|
| 10 | DIO0 | Digital I / O, can be customized | Refer to the procedure for interruption |
| 11 | REST | Reset |
|
| 12 | REST | Reset |
|
| 13 | GND | Signal ground |
|
| 14 | DIO4 | Digital I / O, can be customized |
|
| 15 | DIO5 | Digital I / O, can be customized |
|
| 16 | ANT | Antenna interface | The front end of the module External interface |
Five: parameter performance
| project | description | Minimum value | Typical value | The maximum value | unit |
| Operating Voltage |
| 1.8 | 3,3 | 3.6 | V |
| Operating temperature |
| -20 | 25 | 70 | ° |
| working frequency |
| 410 | 433 | 525 | MHZ |
| Transmit power |
| 19 | 20 | 20.5 | DBm |
| Receiving sensitivity | FSK @ 1.2K Frequency deviation 5K |
| -121 |
| DBm |
|
| Lora @ 146bps BW = 62.5KHZ SF = 12 |
| -139 |
| DBm |
|
| Lora @ 293bps BW = 125KHZ SF = 12 |
| -133 |
| DBm |
Packaging Details
- 1 piece 433mhz Lora SX1278 Module With Antenna